- Robust molecular bowl-based metal-organic frameworks with open metal sites: Size modulation to increase the catalytic activity
-
Herein, two stable lead(II) molecular-bowl-based metal-organic frameworks and their micro- and nanosized forms with open metal sites were presented. These materials could act as Lewis acid catalysts to cyanosilylation reaction. Moreover, the catalytic per
- Liu, Lin,Han, Zheng-Bo,Wang, Shi-Ming,Yuan, Da-Qiang,Ng, Seik Weng
-
-
Read Online
- A Polyhedral Metal-Organic Framework Based on Supramolecular Building Blocks: Catalysis and Luminescent Sensing of Solvent Molecules
-
A multifunctional polyhedral metal-organic framework with a pcu network topology based on supramolecular building blocks can be constructed by the reaction of Eu(NO3)3 and pyridine-3,5-dicarboxylic acid (H2PDC). The basic
- Lin, Xiao-Ming,Niu, Ji-Liang,Wen, Pei-Xian,Pang, Ying,Hu, Lei,Cai, Yue-Peng
-
-
Read Online
- Three scandium compounds with unsaturated coordinative metal sites - Structures and catalysis
-
Two scandium coordination polymers, a 2D supermolecule structure {[Sc(OH)(L1)2(H2O)]}n (1) (HL1 = isonicotinic acid), a 1D infinite chain structure {[Sc3(L2)4(H2
- Zhang, Liying,Wang, Li,Wang, Pengcheng,Song, Tianyou,Li, Da,Chen, Xiaobo,Fan, Yong,Xu, Jianing
-
-
Read Online
- Novel isopolyoxotungstate [H2W11O38] 8- based metal organic framework: As lewis acid catalyst for cyanosilylation of aromatic aldehydes
-
A novel polyoxometalate-based metal organic framework (POMOF) constructed from isolated isopolyoxotungstate [H2W11O 38]8- cluster, {[Cu2(bpy)(H2O) 5.5]2[H2W11O38] ·3H2O·0.5CH3CN} (1, where bpy = 4,4′-bpydine), has been synthesized under solvothermal conditions and charaterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. In 1, {W11} clusters are alternately linked by two [Cu(2)(H2O)1.5(Ot)3(N)] 2+ cations in an unexpected end-to-end fashion leading to a one-dimensional (1D) chain. Adjacent 1D chains are linked through Cu(1)-bpy-Cu(2) in an opposite direction to form a two-dimensional (2D) wavelike sheet along the ab plane. These 2D sheets are further stacked in a parallel fashion giving rise to the 1D channels with copper(II) cations aligned in the channels. The resulting POMOF acted as a Lewis acid catalyst through a heterogeneous manner to prompt cyanosilylation with excellent efficiency.
- Han, Qiuxia,Sun, Xueping,Li, Jie,Ma, Pengtao,Niu, Jingyang
-
-
Read Online
- Zirconium-based MOF catalyst with double active sites and preparation method and application thereof
-
The invention discloses a zirconium-based MOF catalyst loaded with double active sites as well as a preparation method and an application of the zirconium-based MOF catalyst. The method comprises thefollowing steps: adding zirconium salt and an organic ligand into an organic solvent, taking organic acid as a regulator, and carrying out self-assembly reaction to obtain a metal organic framework; adding salicylaldehyde for aldehyde amine condensation to obtain chelating coordination sites, adding palladium salt, and performing coordination through an impregnation method; reducing the obtained MOF in hydrogen to obtain an MOF loaded with Pd nanoparticles; reacting MOF and zinc salt in an organic solvent, and obtaining the catalyst. The Pd-Zn-coated UiO-68-NH2-CH3 catalyst synthesized by thepreparation method disclosed by the invention has efficient catalytic activity in a tandem alcohol oxidation/aldehyde cyanosilylation reaction. According to the catalyst, a metal organic framework UiO-68-NH2-CH3 is constructed, Pd nanoparticles and Zn are loaded by taking the metal organic framework UiO-68-NH2-CH3 as a carrier, the loading capacity of the Pd nanoparticles is 4-8wt%, and the loading capacity of the Zn is 3-5wt%.
- -
-
Paragraph 0071; 0073; 0075-0079
(2021/06/09)
-
- Cyanosilylation of carbonyl compounds catalyzed by half-sandwich (η6-p-cymene) Ruthenium(II) complexes bearing heterocyclic hydrazone derivatives
-
A new class of half-sandwich (?6-p-cymene) ruthenium(II) complexes supported by heterocyclic hydrazone derivatives of general formula [Ru(?6-p-cymene)(Cl)(L)] where L represents N’-((1H-pyrrol-2-yl)methylene)furan-2-carbohydrazide (L
- Alves, Luis G.,Bharathi, Madheswaran,Indira, Sekar,Martins, Ana M.,Shanmuga Bharathi, Kuppannan,Vinoth, Govindasamy
-
-
- Conjugated Bis-Guanidines (CBGs) as β-Diketimine Analogues: Synthesis, Characterization of CBGs/Their Lithium Salts and CBG Li Catalyzed Addition of B?H and TMSCN to Carbonyls
-
Herein, we report a range of conjugated bis-guanidines (CBGs) L [L={(ArHN)(ArHN)C=N?C=(NAr)(NHAr)}; Ar=2, 6-Me2 - C6H3, (1), 2, 4, 6-Me3?C6H2, (2), 2, 6-Et2?C6H3
- Peddarao, Thota,Baishya, Ashim,Sarkar, Nabin,Acharya, Rudresh,Nembenna, Sharanappa
-
p. 2034 - 2046
(2021/05/27)
-
- Role of metal center and coordination environment in M-(Z)-N-((E)-pyridin-2-ylmethylene)isonicotinohydrazonate (M = LaIII, ZnII, CdII or HgII) catalyzed cyanosilylation of aldehydes
-
A series of known metal complexes, [LaL2(NO3)(H2O)2]·5H2O (1), [Zn(μ-L)(NO3)(H2O)]n (2), {[Cd2(μ-HL)(μ-L)(NO3)3(H2O)]·Hsub
- Hajiyeva, Sevinc R.,Huseynov, Fatali E.,Kopylovich, Maximilian N.,Mahmoudi, Ghodrat,Nikitina, Eugeniya V.,Prisyazhnyuk, Ekaterina D.,Shamilov, Nazim T.,Zubkov, Fedor I.
-
-
- Application of an Electrochemical Microflow Reactor for Cyanosilylation: Machine Learning-Assisted Exploration of Suitable Reaction Conditions for Semi-Large-Scale Synthesis
-
Cyanosilylation of carbonyl compounds provides protected cyanohydrins, which can be converted into many kinds of compounds such as amino alcohols, amides, esters, and carboxylic acids. In particular, the use of trimethylsilyl cyanide as the sole carbon source can avoid the need for more toxic inorganic cyanides. In this paper, we describe an electrochemically initiated cyanosilylation of carbonyl compounds and its application to a microflow reactor. Furthermore, to identify suitable reaction conditions, which reflect considerations beyond simply a high yield, we demonstrate machine learning-assisted optimization. Machine learning can be used to adjust the current and flow rate at the same time and identify the conditions needed to achieve the best productivity.
- Sato, Eisuke,Fujii, Mayu,Tanaka, Hiroki,Mitsudo, Koichi,Kondo, Masaru,Takizawa, Shinobu,Sasai, Hiroaki,Washio, Takeshi,Ishikawa, Kazunori,Suga, Seiji
-
supporting information
p. 16035 - 16044
(2021/09/02)
-
- H-Bonded and metal(ii)-organic architectures assembled from an unexplored aromatic tricarboxylic acid: structural variety and functional properties
-
This study reports the application of an aromatic tricarboxylic acid, 2,5-di(4-carboxylphenyl)nicotinic acid (H3dcna) as a versatile and unexplored organic building block for assembling a new series of metal(ii) (M = Co, Ni, Zn, Fe, and Mn) complexes and coordination polymers, namely [M(Hdcna)(phen)2(H2O)]·H2O (M = Co (1), Ni (2)), [Zn(μ-Hdcna)(phen)]n(3), [Co(μ-Hdcna)(bipy)(H2O)2]n·nH2O (4), [Zn2(μ-Hdcna)2(bipy)2(H2O)4]·6H2O (5), [Zn(μ3-Hdcna)(H2biim)]n(6), [Ni2(Hdcna)2(μ-bpb)(bpb)2(H2O)4] (7), [Fe(μ4-Hdcna)(μ-H2O)]n·nH2O (8), and [Mn3(μ5-dcna)2(bipy)2(H2O)2]n·2nH2O (9). Such a diversity of products was hydrothermally prepared from the corresponding metal(ii) salts, H3dcna as a principal multifunctional ligand, and N-donor mediators of crystallization (1,10-phenanthroline, phen; 2,2'-bipyridine, bipy; 2,2'-biimidazole, H2biim; or 1,4-bis(pyrid-4-yl)benzene, bpb). The obtained products1-9were fully characterized by standard methods (elemental analysis, FTIR, TGA, PXRD) and the structures were established by single-crystal X-ray diffraction. These vary from the discrete monomers (1,2) and dimers (5,7) to the 1D (3,4,6) and 2D (8,9) coordination polymers (CPs). Structural and topological characteristics of hydrogen-bonded or metal-organic architectures in1-9were highlighted, revealing that their structural multiplicity depends on the type of metal(ii) source and crystallization mediator. Thermal stability as well as luminescent, magnetic, or catalytic properties were explored for selected compounds. In particular, the zinc(ii) derivatives3,5, and6were applied as efficient heterogeneous catalysts for the cyanosilylation of aldehydes with trimethylsilyl cyanide at room temperature. The catalytic reactions were optimized by tuning the different reaction parameters (solvent composition, time, catalyst loading) and the substrate scope was also explored. Compound5revealed superior catalytic activity leading to up to 75% product yields, while maintaining its original performance upon recycling for at least four reaction cycles. Finally, the obtained herein products represent the unique examples of coordination compounds derived from H3dcna, thus opening up the use of this multifunctional tricarboxylic acid for generating complexes and coordination polymers with interesting structures and functional properties.
- Gu, Jin-Zhong,Kirillov, Alexander M.,Kirillova, Marina V.,Wan, Shi-Mao
-
p. 7197 - 7209
(2020/06/04)
-
- Role of aromatic: Vs. aliphatic amine for the variation of structural, electrical and catalytic behaviors in a series of silver phosphonate extended hybrid solids
-
Four inorganic-organic hybrid silver phosphonate compounds, [Ag(C10H8N2)(H4hedp)] (1), [Ag2(C10H8N2)(H3hedp)]·2H2O (2), [C4H12N2][Ag4(H2hedp)2] (3) and [C4H12N2][Ag10(H2hedp)4(H2O)2]·2H2O (4) (H5hedp = 1-hydroxyethane-1,1-diphosphonic acid), have been pre
- Rom, Tanmay,Paul, Avijit Kumar
-
p. 13618 - 13634
(2020/10/26)
-
- Discovery of the First in Vivo Active Inhibitors of the Soluble Epoxide Hydrolase Phosphatase Domain
-
The emerging pharmacological target soluble epoxide hydrolase (sEH) is a bifunctional enzyme exhibiting two different catalytic activities that are located in two distinct domains. Although the physiological role of the C-terminal hydrolase domain is well-investigated, little is known about its phosphatase activity, located in the N-terminal phosphatase domain of sEH (sEH-P). Herein we report the discovery and optimization of the first inhibitor of human and rat sEH-P that is applicable in vivo. X-ray structure analysis of the sEH phosphatase domain complexed with an inhibitor provides insights in the molecular basis of small-molecule sEH-P inhibition and helps to rationalize the structure-activity relationships. 4-(4-(3,4-Dichlorophenyl)-5-phenyloxazol-2-yl)butanoic acid (22b, SWE101) has an excellent pharmacokinetic and pharmacodynamic profile in rats and enables the investigation of the physiological and pathophysiological role of sEH-P in vivo.
- Kramer, Jan S.,Woltersdorf, Stefano,Duflot, Thomas,Hiesinger, Kerstin,Lillich, Felix F.,Kn?ll, Felix,Wittmann, Sandra K.,Klingler, Franca-M.,Brunst, Steffen,Chaikuad, Apirat,Morisseau, Christophe,Hammock, Bruce D.,Buccellati, Carola,Sala, Angelo,Rovati, G. Enrico,Leuillier, Matthieu,Fraineau, Sylvain,Rondeaux, Julie,Hernandez-Olmos, Victor,Heering, Jan,Merk, Daniel,Pogoryelov, Denys,Steinhilber, Dieter,Knapp, Stefan,Bellien, Jeremy,Proschak, Ewgenij
-
p. 8443 - 8460
(2019/10/16)
-
- Layered double hydroxides (LDHs): As efficient heterogeneous catalyst for the cyanosilylation of aromatic aldehydes
-
We report the first application of Layered Double Hydroxides (LDHs) as efficient and novel heterogeneous catalyst for the cyanosilylation of aldehydes with excellent yields and simple work up. The reaction between different aldehydes with electron-withdra
- Afi, Fahimeh,Mokhtari, Javad,Tahoori, Fatemeh
-
-
- Solvent-free cyanosilylation of aromatic and heteroaryl aldehydes catalyzed by a cationic iron N-heterocyclic carbene complex at ambient temperature under UV irradiation
-
The cyanosilylation of aromatic aldehydes and heteroaryl aldehydes with trimethylsilyl cyanide (TMSCN) is efficiently catalyzed by an iron complex of the type {[3-isopropyl-1-(1R-phenylethyl)imidazol-2-ylidene]Fe(CO)2}I (3) in presence of UV li
- Kumar, Dharmendra,Prakasham,Gangwar, Manoj Kumar,Ghosh, Prasenjit
-
supporting information
(2019/08/07)
-
- Low-valent magnesium(i)-catalyzed cyanosilylation of ketones
-
The magnesium(i) complex [(XylNacnac)Mg]2 was employed as a highly efficient catalyst for the cyanosilylation of a variety of ketones with trimethylsilyl cyanide under mild conditions. In contrast to the traditional stoichiometric us
- Wang, Weifan,Luo, Man,Li, Jia,Pullarkat, Sumod A.,Ma, Mengtao
-
supporting information
p. 3042 - 3044
(2018/03/28)
-
- Method for aldehyde cyanosilylation reaction under conditions of no catalyst or solvent
-
The invention discloses a method for an aldehyde cyanosilylation reaction under conditions of no catalyst or solvent. In a glove box, aldehyde and trimethylsilyl cyanide are sequentially added to a nuclear magnetic resonance tube, then, the glove box is m
- -
-
Paragraph 0073; 0074; 0075
(2018/11/22)
-
- Preparation method of cyanalcohol silyl ether compound
-
The invention discloses a preparation method of a cyanalcohol silyl ether compound. The preparation method comprises usage of a catalyst, the catalyst is a tridentate forceps-shaped ligand-stabilizedmagnesium lithium bimetallic compound. According to the
- -
-
Paragraph 0071; 0072; 0073
(2019/01/06)
-
- Hydroboration, Cyanosilylation, and Sequential Cyanosilylation and Hydroboration of Carbonyl Compounds in the Presence of a TiIV Amido Complex as an Efficient Catalyst
-
Catalytic hydroboration and cyanosilylation of a wide range of aldehydes and ketones, with pinacolborane (4,4,5,5-tetramethyl-1,3,2-dioxaborolane) and trimethylsilyl cyanide, respectively, in the presence of titanium(IV) complexes [κ2-{(C5
- Harinath, Adimulam,Bhattcharjee, Jayeeta,Gorantla, Koteswar Rao,Mallik, Bhabani S.,Panda, Tarun K.
-
supporting information
p. 3180 - 3192
(2018/07/06)
-
- Cyanosilylation of Aldehydes Catalyzed by Iron(III) Arylhydrazone-β-Diketone Complexes
-
Two known iron(iii) complexes, [Fe(H2O)3(L1)]·xH2O (x≤4 (1), 5 (2)) and [Fe(H2O)3(L2)]·3H2O (3), bearing the basic forms of 5-chloro-3-(2-(4,4-dimethyl-2,6-dioxocyclohexylidene)hydrazinyl)-2-hydroxybenzenesulfonic acid (H3L1) and 3-(2-(2,4-dioxopentan-3-y
- Gurbanov, Atash V.,Maharramov, Abel M.,Zubkov, Fedor I.,Saifutdinov, Alexander M.,Guseinov, Firudin I.
-
p. 190 - 194
(2018/03/09)
-
- A bi-metallic MOF catalyst via sensitive detection & adsorption of Fe3+ ions for size-selective reaction prompting
-
A cadmium(ii)-based MOF, Cd-MDIP, was successfully prepared by hydrothermal reaction between the tetra-carboxylic ligand 5,5′-methylenebisophthalic acid (H4MDIP) and cadmium perchlorate. The X-ray crystal structure analysis showed that there ar
- Li, Yang,Chang, Ziling,Huang, Fangmin,Wu, Pengyan,Chu, Huacong,Wang, Jian
-
p. 9267 - 9273
(2018/07/29)
-
- Bifunctional 2D Cd(II)-Based Metal-Organic Framework as Efficient Heterogeneous Catalyst for the Formation of C-C Bond
-
A porous two-dimensional (2D) metal-organic framework (MOF), namely, [Cd(PBA)(DMF)]·DMF (Cd-PBA), has been solvothermally synthesized by the reaction of 5-(4-pyridin-3-yl-benzoylamino)-isophthalic acid ligand (H2PBA) and Cd(II) ions. Structural
- Hu, Lei,Hao, Gui-Xia,Luo, Hai-Dong,Ke, Chun-Xian,Shi, Guang,Lin, Jia,Lin, Xiao-Ming,Qazi, Umair Yaqub,Cai, Yue-Peng
-
p. 2883 - 2889
(2018/05/09)
-
- Hydrazone-based covalent organic frameworks for Lewis acid catalysis
-
Hydrazone-based covalent organic frameworks (COFs) are rich in functional groups but have very limited variety and applications. Herein, two hydroxy-rich hydrazone-based COFs are synthesized in pure water and postsynthetically incorporated with CoII, exhibiting Lewis acid catalytic activity towards cyanosilylation of various aldehydes with size selectivity.
- Kundu, Tanay,Wang, Jian,Cheng, Youdong,Du, Yonghua,Qian, Yuhong,Liu, Guoliang,Zhao, Dan
-
p. 13824 - 13829
(2018/10/20)
-
- A cationic aluminium complex: An efficient mononuclear main-group catalyst for the cyanosilylation of carbonyl compounds
-
A structurally characterized cationic aluminium complex [(AT)Al(DMAP)]+[OTf]- (3) stabilized through a relatively nonbulky aminotroponate (AT) ligand is reported (DMAP = 4-(dimethylamino)pyridine). This compound was found to work as
- Sharma, Mahendra Kumar,Sinhababu, Soumen,Mukherjee, Goutam,Rajaraman, Gopalan,Nagendran, Selvarajan
-
supporting information
p. 7672 - 7676
(2017/07/11)
-
- Dimeric alumatranes as catalysts for trimethylsilylcyanation reaction
-
The solid-state structures of dimeric alumatranes with three five-membered rings chelated by [(OCMe2CH2)nN(CH2CH2O)3-n]3- (n = 1, L1; n = 2, L2; n = 3, L3), which vary by the num
- Kim, Yoseph,Lee, Kang Mun,Kim, So Han,Moon, Jung Hee,Kim, Youngjo
-
p. 48151 - 48160
(2017/11/03)
-
- Lewis Acid Mediated Nazarov Cyclization as a Convergent and Enantioselective Entry to C-nor-D-homo-Steroids
-
A straightforward synthesis of C-nor-D-homo steroids starting from (+)-Wieland–Miescher ketone is reported. This convergent synthetic strategy utilizes a?scalable diastereoselective Nazarov cyclization of functionalized chiral aryl vinyl ketones, allowing for further functionalization. The ability to conduct this key transformation on a multi-gram scale paves the way for the synthesis of a variety of completely new C-nor-D-homo steroids, without the need of a classic steran steroid rearrangement or achiral linear reaction sequences.
- Krieger, Johannes,Smeilus, Toni,Schackow, Oliver,Giannis, Athanassios
-
supporting information
p. 5000 - 5004
(2017/04/18)
-
- Metal free mild and selective aldehyde cyanosilylation by a neutral penta-coordinate silicon compound
-
This study demonstrates the preparation and structural characterization of a Si(iv) hydride (PhC(NtBu)2SiH(CH3)Cl) (1) and its use as a catalyst for the cyanosilylation of a variety of aldehydes. Compound 1 represents the first neutr
- Swamy,Bisai, Milan Kumar,Das, Tamal,Sen, Sakya S.
-
supporting information
p. 6910 - 6913
(2017/07/10)
-
- A Stable Porphyrin-Based Porous mog Metal-Organic Framework as an Efficient Solvent-Free Catalyst for C-C Bond Formation
-
We herein report the porous 4-fold interpenetrated mog (moganite) metal-organic framework (MOF) [Cd3(tipp)(bpdc)2]·DMA·9H2O (1·Cd; H2tipp = 5,10,15,20-tetrakis(4-(imidazol-1-yl)phenyl)porphyrin, H2bpd
- Jiang, Wei,Yang, Jin,Liu, Ying-Ying,Song, Shu-Yan,Ma, Jian-Fang
-
supporting information
p. 3036 - 3043
(2017/03/14)
-
- Copper(II) complexes with carboxylic- or sulfonic-functionalized arylhydrazones of acetoacetanilide and their application in cyanosilylation of aldehydes
-
The new copper(II) complexes [Cu(HL1)(H2O)(CH3OH)] (1, H3L1?= (Z)-2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazinyl)benzoic acid) and [Cu(HL2)(H2O)(CH3OH)] (2,
- Gurbanov, Atash V.,Mahmudov, Kamran T.,Sutradhar, Manas,Guedes da Silva, Fátima C.,Mahmudov, Talib A.,Guseinov, Firudin I.,Zubkov, Fedor I.,Maharramov, Abel M.,Pombeiro, Armando J.L.
-
-
- TBD-catalyzed cyanosilylation of aldehydes and ketones
-
This study examines the catalytic efficacy of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) in the cyanosilylation of aldehydes and ketones. In an aldehyde reaction, the corresponding products were obtained at high yield using minimal TBD (0.01 mol%). TBD was
- Matsukawa,Kimura
-
p. 1947 - 1952
(2016/11/25)
-
- Multifunctional lanthanide-organic frameworks for fluorescent sensing, gas separation and catalysis
-
Two lanthanide MOFs based on 3,3′-((2,3,6,7-tetramethoxyanthracene-9,10-diyl)bis(4,1-phenylene))diacrylic acid (H2LOMe), [Eu(LOMe)1.5(H2O)2]·3.5DMA·2H2O (1) and [Pr(LOMe/su
- Liu, Xiaobin,Lin, Huan,Xiao, Zhenyu,Fan, Weidong,Huang, Ao,Wang, Rongming,Zhang, Liangliang,Sun, Daofeng
-
p. 3743 - 3749
(2016/03/05)
-
- Reaction of sodium 2-(2-(2,4-dioxopentan-3-ylidene)hydrazinyl) benzenesulfonate with ethylenediamine on Cu(ii) and Ni(ii) centres: Efficient Cu(ii) homogeneous catalysts for cyanosilylation of aldehydes
-
By reacting copper(ii) or nickel(ii) salts with sodium 2-(2-(2,4-dioxopentan-3-ylidene)hydrazinyl) benzenesulfonate (NaHL) in an EtOH/H2O solvent mixture and in the presence of ethylenediamine (en), [Cu(HL)2(en)2] (1) or {
- Mahmoud, Abdallah G.,Mahmudov, Kamran T.,Guedes Da Silva, M. Fátima C.,Pombeiro, Armando J. L.
-
p. 54263 - 54269
(2016/07/06)
-
- Zinc(II) and Copper(II) Metal–Organic Frameworks Constructed from a Terphenyl-4,4′′-dicarboxylic Acid Derivative: Synthesis, Structure, and Catalytic Application in the Cyanosilylation of Aldehydes
-
Solvothermal reaction of zinc(II) and copper(II) salts with 3,3′′-dipropoxy-[1,1′:4′,1′′-terphenyl]-4,4′′-dicarboxylic acid (H2L) gave rise to the 1D and 2D metal–organic frameworks (MOFs) [Zn(L)(dmf)2]n(1), [Zn2/sub
- Karmakar, Anirban,Paul, Anup,Rúbio, Guilherme M. D. M.,Guedes da Silva, M. Fátima C.,Pombeiro, Armando J. L.
-
p. 5557 - 5567
(2016/12/26)
-
- A dual-functional Cd(II)-organic-framework demonstrating selective sensing of Zn2+ and Fe3+ ions exclusively and size-selective catalysis towards cyanosilylation
-
A dual-functional complex with the formula Cd2(L)(DMF)2(H2O)2 (L = 2,3′,5,5′-biphenyl tetracarboxylic acid) has been successfully synthesized under solvothermal conditions and characterized by thermogravimetric
- Zhang, Xiao-Nan,Liu, Lin,Han, Zheng-Bo,Gao, Ming-Liang,Yuan, Da-Qiang
-
p. 10119 - 10124
(2015/02/05)
-
- Solvent-Induced Facile Synthesis of Cubic-, Spherical-, and Honeycomb-Shape Palladium N-Heterocyclic Carbene Particles and Catalytic Applications in Cyanosilylation
-
The facile synthesis of palladium N-heterocyclic carbene (NHC) particles with spherical, cubic, and honeycomb morphologies is accomplished. The structures of cubic and honeycomb particles are defined as an unprecedented trinuclear palladium-NHC complex. A
- Zhao, Huaixia,Li, Xinxiong,Li, Liuyi,Wang, Ruihu
-
p. 3642 - 3647
(2015/08/18)
-
- Insight into the catalytic properties and applications of metal-organic frameworks in the cyanosilylation of aldehydes
-
Here we present a systematic investigation of the cyanosilylation of aldehydes with trimethylsilyl cyanide (TMSCN) by using metal-organic frameworks (MOFs) as catalysts. Four types of thermally stable MOFs (MIL-47 (V), MIL-53 (Al), MIL-101 (Cr), and UiO-6
- Zhang, Zhiguo,Chen, Jingwen,Bao, Zongbi,Chang, Ganggang,Xing, Huabin,Ren, Qilong
-
p. 79355 - 79360
(2015/10/05)
-
- Porous barium-organic frameworks with highly efficient catalytic capacity and fluorescence sensing ability
-
The current study describes the first barium-organic framework with permanent porosity, efficient catalytic capacity, and highly selective luminescence sensing of DMSO molecules and metal ions. Single-crystal-to-single-crystal transformations (from comple
- Liu, Fuling,Xu, Yuwen,Zhao, Lianming,Zhang, Liangliang,Guo, Wenyue,Wang, Rongming,Sun, Daofeng
-
supporting information
p. 21545 - 21552
(2015/11/10)
-
- The application of spontaneous flocculation for the preparation of lanthanide-containing polyoxometalates intercalated layered double hydroxides: highly efficient heterogeneous catalysts for cyanosilylation
-
The lanthanide-containing polyoxometalates (POMs) have been intercalated into layered double hydroxides (LDHs) successfully through the spontaneous flocculation method, resulting in the formation of new heterogeneous LDHs–POMs catalysts Mg3Al–L
- Jia, Yueqing,Song, Yu-Fei,Zhao, Shen
-
p. 172 - 180
(2020/12/07)
-
- Tri-lacunary polyoxometalates of Na8H[PW9O 34] as heterogeneous Lewis base catalysts for Knoevenagel condensation, cyanosilylation and the synthesis of benzoxazole derivatives
-
We reported for the first time the development of tri-lacunary polyoxometalates (POMs) of Na8H[A-PW9O34] ·7H2O and Na8H[B-PW9O 34]·19H2O (Na-A-PW9 and Na-B-PW 9) as highly selective and efficient heterogeneous Lewis base catalysts for Knoevenagel condensation, cyanosilylation of various aldehydes and ketones and the synthesis of benzoxazole derivatives at 25 C under mild conditions. Since both Na-A-PW9 and Na-B-PW9 display no characteristic porosity, it is proposed that the catalytic reactions proceed not only on the surface and interface, but also in the bulk phase. The catalysts can be easily recovered and reused for at least six times without obvious decrease of catalytic activities and the structures of the catalysts remain unchanged after recycling. The easy preparation, high efficiency, reusability of the heterogeneous catalysts of Na-A-PW9 and Na-B-PW9 exhibit great potential for further application.
- Zhao, Shen,Chen, Yang,Song, Yu-Fei
-
p. 140 - 146
(2014/03/21)
-
- A 3D In(III) coordination polymer derived from rigid dicarboxylate ligand: Synthesis, crystal structure and catalytic property
-
A new indium coordination polymer, In(OH)(H2O)(1,4-bdc) (1,4-H2bdc = 1, 4-benzendicarboxylic acid), has been prepared under solvothermal conditions using a mixture of rigid organic linker and inorganic heteropolyacid (12-phosphotungs
- Xia, Jing,Zheng, Jifu,Xu, Jianing,Wang, Li,Yang, Lu,Su, Zhandong,Fan, Yong
-
-
- Synthesis, structure and catalytic application of lead(ii) complexes in cyanosilylation reactions
-
Hydrothermal reactions of a lead(ii) salt with 3-aminopyrazine-2-carboxylic acid (HL1) gave rise to a series of lead(ii) coordination compounds (1-6) having zero, one, two and three dimensional structures. X-ray diffraction structural analyses reveal that
- Karmakar, Anirban,Hazra, Susanta,Guedes Da Silva, M. Ftima C.,Pombeiro, Armando J. L.
-
p. 268 - 280
(2015/02/02)
-
- Synthesis of metallasiloxanes of group 13-15 and their application in catalysis
-
Herein we report on the synthesis, characterization and catalytic application of metallasiloxanes of group 13-15. Reactions of R(Me)Si(OH) 2 (R = N(SiMe3)-2,6-iPr2C6H 3) (A) with Bi(NEt2)3, Sb(NEt2) 3, Ge[N(SiMe3)2]2 and AlMe 3 afforded [R(Me)SiO2BiNEt2]2 (1), [R(Me)SiO2SbOSi(OH)(Me)R]2 (2), [R(Me)SiO 2]3(GeH)2 (3), and [R(Me)SiO 2AlMe(THF)]2 (4), respectively. Reactions of RSi(OH) 3 (B) with Bi(NEt2)3 and AlMe3 produced complexes (RSiO3Bi)4 (5) and (RSiO 3)2[AlMe(THF)]3 (6). Compounds 1-6 have been characterized by IR and NMR spectroscopy, single crystal X-ray structure and elemental analysis. Each of the compounds 1, 2 and 4 features an eight-membered ring of composition Si2O4Bi2, Si 2O4Sb2 and Si2O4Al 2, while 3 and 6 exhibit a bicyclic structure with the respective skeletons of Si3O6Ge2 and Si2O 6Al3. Compound 5 has a cubic core of Si4O 12Bi4. Compounds 1-6 exhibit very good catalytic activity in the addition reaction of trimethylsilyl cyanide (TMSCN) with benzaldehyde. Compound 5 was found to be the best catalyst and its activity was probed in the reactions of TMSCN with a number of aldehydes and ketones.
- Li, Yan,Wang, Jinjin,Wu, Yile,Zhu, Hongping,Samuel, Prinson P.,Roesky, Herbert W.
-
supporting information
p. 13715 - 13722
(2013/09/23)
-
- Indium metal-organic frameworks as catalysts in solvent-free cyanosilylation reaction
-
Two new Indium MOFs with the bending multicarboxylate ligand H 2dpmda as a linker and different N-donor ancillary ligands were obtained; the two compounds are isoreticular with 2D-hcb uninodal 3-connected nets. Comparison of their activity in c
- Aguirre-Diaz, Lina Maria,Iglesias, Marta,Snejko, Natalia,Gutierrez-Puebla, Enrique,Monge, M. Angeles
-
p. 9562 - 9571
(2013/11/19)
-
- H3O2 bridging ligand in a metal-organic framework. Insight into the Aqua-Hydroxo?hydroxyl equilibrium: A combined experimental and theoretical study
-
A metal-organic framework (MOF) bearing the aqua-hydroxo species (O 2H3)- in the framework, as well as the processes that govern the equilibrium aqua-hydroxo (O2H 3)-?hydroxyl (OH) in Sc-MOFs, are studied experimentally and theoretically. Computational studies were employed to determine the relative energies for the two compounds that coexist under certain hydrothermal conditions at pH 3(3,5-DSB)2(μ-O2H3)(μ-OH) 2(H2O)2] (from now on, (O2H 3)Sc-MOF; 3,5-DSB = 3,5-disulfobenzoic acid) was obtained as a pure and stable phase. It was impossible to isolate [Sc3(3,5-DSB) 2(μ-OH)3(H2O)4] as a pure phase, as it turned out to be the precursor of (O2H3)Sc-MOF. Additionally, a third compound that appears at pH between 3.5 and 4, [Sc 3(3,5-DSB)(μ-OH)6(H2O)] and a fourth, [Sc(3,5-DSB)(Phen)(H2O)](H2O), in whose formula neither OH groups nor H3O2- anions appear, are reported for comparative purposes. A study of the (O2H3)Sc-MOF electronic structure, and some heterogeneous catalytic tests in cyanosilylation of aldehydes reactions, are also reported.
- D'Vries, Richard F.,De La Pena-O'Shea, Victor A.,Snejko, Natalia,Iglesias, Marta,Gutierrez-Puebla, Enrique,Monge, M. Angeles
-
p. 5782 - 5792
(2013/06/04)
-
- Efficient synthesis of cyanohydrin trimethylsilyl ethers via 1,2-chemoselective cyanosilylation of carbonyls
-
Here we report a sustainable protocol for the cyanosilylation of carbonyl compounds 1a-g and 3a-m using trimethylsilyl cyanide and triphenylphosphine supported on polystyrene as a catalyst under solvent-free conditions. It has been shown that a small amou
- Strappaveccia, Giacomo,Lanari, Daniela,Gelman, Dmitri,Pizzo, Ferdinando,Rosati, Ornelio,Curini, Massimo,Vaccaro, Luigi
-
p. 199 - 204
(2013/02/23)
-
- Stereoselective construction of cis-decalin framework via radical domino cyclization
-
Steroids with A/B cis-decalin moiety and various bioactivities have attracted many synthetic chemists as target molecules and development of efficient methodology providing cis-decalins has been desired. A stereoselective domino cyclization via Mn(OAc)3 and Cu(OTf)2-mediated radical reaction was found to be effective to construct cis-decalin framework.
- Suzuki, Eriko,Ueda, Minoru,Ohba, Shigeru,Sugai, Takeshi,Shoji, Mitsuru
-
p. 1589 - 1592
(2013/03/28)
-
- The catalytic activity of Zn(II) and Mn(II) organometallic complexes
-
Zn(II) and Mn(II) organometallic complexes I and II were first used to catalyze the cyanosilylation reaction, and good catalytic results (24-99 %) were achieved. The catalytic activity of the complexes was determined by 1H NMR.
- Mei, Luo,Yan, Li Xiao,Wei, Chen,Hai, Zhang Jia
-
p. 2715 - 2721
(2013/07/26)
-
- Probing the bifunctional catalytic activity of ceria nanorods towards the cyanosilylation reaction
-
Ceria nanorods were demonstrated to be an active, bifunctional catalyst for the cyanosilylation of aldehydes. The catalytic activity of ceria was shown to be positively correlated with a decrease in the coordination numbers of neighbouring oxygen atoms ar
- Wang, Gonghua,Wang, Lu,Fei, Xiang,Zhou, Yunyun,Sabirianov, Renat F.,Mei, Wai Ning,Cheung, Chin Li
-
p. 2602 - 2609
(2013/09/24)
-
- Polystyrene-supported TBD as an efficient and reusable organocatalyst for cyanosilylation of aldehydes, ketones, and imines
-
Polystyrene-supported TBD (PS-TBD) catalyzes cyanosilylation of both aldehydes and ketones using TMSCN to give the corresponding products in high yields. Imines were also converted into the desired α-cyanoanimes under the same conditions. PS-TBD was easil
- Matsukawa, Satoru,Fujikawa, Syohei
-
supporting information; experimental part
p. 1075 - 1077
(2012/04/17)
-
- Insight into the correlation between net topology and ligand coordination mode in new lanthanide MOFs heterogeneous catalysts: A theoretical and experimental approach
-
Three new families of compounds were obtained as pure phases, with different lanthanide cations and the 3,5-disulfobenzoic acid (3,5-DSB). The hydrothermal synthesis conditions influence on structural type obtained was studied. The structural type RPF-21 corresponds to the compound [Ln(3,5-DSB)(H2O)5] (Ln = La, Pr, Nd); RPF-22 to the compound [Ln(3,5-DSB)(H2O)3] (Ln = La, Pr, Nd, Sm, and Eu), and RPF-23 to the compound [Ln3(3,5-DSB)2(OH) 3(H2O)3] (Ln = Pr, Nd, and Eu). The dimensionality and the topology of the compounds are determined by the sulfonate group coordination modes; RPF-23 presents a new type of topology. Computational studies have determined the relative energies for those compounds that coexist under certain hydrothermal conditions, and they have brought some light to the thermodynamic or kinetic control that drives each reaction. The new materials were tested as catalysts in cyanosilylation reaction (CSR) of aldehydes under solvent-free conditions. The three of them catalyze the CSRs within 4 h, and a remarkable difference in activity is found between RPF-21 and the other two materials. The catalytic activity mainly depends on the network structure, with very little influence of the lanthanide cation. The mechanism includes, probably, a displacement of the catalyst labile water molecules by aldehyde before catalysts activation and reaction.
- Dvries, Richard F.,De La Pena-Oshea, Victor A.,Snejko, Natalia,Iglesias, Marta,Gutierrez-Puebla, Enrique,Monge, M. Angeles
-
p. 5535 - 5545
(2013/01/15)
-
- Kinetics and mechanism of the racemic addition of trimethylsilyl cyanide to aldehydes catalysed by Lewis bases
-
The mechanism by which four Lewis bases, triethylamine, tetrabutylammonium thiocyanate, tetrabutylammonium azide and tetrabutylammonium cyanide, catalyse the addition of trimethylsilyl cyanide to aldehydes is studied by a combination of kinetic and spectr
- North, Michael,Omedes-Pujol, Marta,Young, Carl
-
supporting information; experimental part
p. 4289 - 4298
(2012/07/14)
-