23355-97-7Relevant articles and documents
Molybdenum(VI) cis-dioxo complexes bearing sugar derived chiral Schiff-base ligands: Synthesis, characterization, and catalytic applications
Zhao, Jin,Zhou, Xiangge,Santos, Ana M.,Herdtweck, Eberhardt,Romao, Carlos C.,Kuehn, Fritz E.
, p. 3736 - 3742 (2003)
Molybdenum(VI)-cis-dioxo complexes bearing sugar derived chiral Schiff-base ligands of general formula MoO2(L)(Solv) have been synthesized (with L = N-salicylidene-D-glucosamine; N-salicylidene-1,3,4,6-tetraacetyl-α-D-glucosamine; N-5-chlorosal
Formation and structure of conjugated salen-cross-linked polymers and their application in asymmetric heterogeneous catalysis
Nielsen, Morten,Thomsen, Anne H.,Jensen, Torben R.,Jakobsen, Hans J.,Skibsted, Jorgen,Gothelf, Kurt V.
, p. 342 - 347 (2005)
A new type of cross-linked condensation polymer was obtained by the reaction of 1,3,5-tris[(5-tert-butyl-3-formyl-4-hydroxyphenyl)ethynyl]benzene (1) with ethylenediamine. Solid-state 13C{1H} CP/MAS NMR analysis showed that the polym
Synthesis of a Fe3O4-CuO@meso-SiO2 nanostructure as a magnetically recyclable and efficient catalyst for styrene epoxidation
Zhang, Xiaowei,Wang, Ge,Yang, Mu,Luan, Yi,Dong, Wenjun,Dang, Rui,Gao, Hongyi,Yu, Jie
, p. 3082 - 3089 (2014)
A novel hybrid Fe3O4-CuO@meso-SiO2 catalyst was successfully fabricated by a multi-step assembly method. CuO nanoparticles were first deposited on the surface of Fe3O4 microspheres to form the Fe
New dinuclear ruthenium complexes: Structure and oxidative catalysis
Di Giovanni, Carlo,Vaquer, Lydia,Sala, Xavier,Benet-Buchholz, Jordi,Llobet, Antoni
, p. 4335 - 4345 (2013)
The synthesis of new dinuclear complexes of the general formula {[Ru II(trpy)]2(μ-pdz-dc)(μ-(L)}+ [pdz-dc is the pyridazine-3,6-dicarboxylate dianion; trpy is 2,2′:6′,2″- terpyridine; L = Cl (1+) or OH (2+
Dinuclear ruthenium complexes containing the Hpbl ligand: Synthesis, characterization, linkage isomerism, and epoxidation catalysis
Francs, Laia,Gonzlez-Gil, Rosa Mara,Moyano, Daniel,Benet-Buchholz, Jordi,Garca-Antn, Jordi,Escriche, Llus,Llobet, Antoni,Sala, Xavier
, p. 10394 - 10402 (2014)
Three dinucleating Ru-Cl complexes containing the hexadentate dinucleating ligand [1,1′-(4-methyl-1H-pyrazole-3,5-diyl)bis(1-(pyridin-2-yl)ethanol)] (Hpbl) and the meridional 2,2′:6′,2″-terpyridine ligand (trpy) have been prepared and isolated. These comp
Chiral ansa-bridged η5-cyclopentadienyl molybdenum complexes: Synthesis, structure and application in asymmetric olefin epoxidation
Zhao, Jin,Herdtweck, Eberhardt,Kühn, Fritz E.
, p. 2199 - 2206 (2006)
Ansa-bridged η5-cyclopentadienyl carbonyl molybdenum complexes were synthesized with stereogenic centers located in the side chain. An exemplary X-ray crystal structure and the catalytic activity for asymmetric olefin epoxidation are reported. In non-chiral epoxidation the compounds show a good catalytic activity, comparable to activities observed for the related non-chiral complexes of composition CpMo(CO)3X (X = Cl, CH3). For the asymmetric epoxidation of trans-β-methylstyrene the chiral induction is up to ca. 20%. The high ring strain of the ansa-bridged system hampers, unfortunately, its stability under oxidative condition.
Cyclobutane-based peptides/terpyridine conjugates: Their use in metal catalysis and as functional organogelators
Porcar-Tost, Oriol,Pi-Boleda, Bernat,García-Anton, Jordi,Illa, Ona,Ortu?o, Rosa M.
, p. 7252 - 7260 (2018)
Two new conjugates, hcptpyDP and hcptpyTP, of a terpyridine derivative incorporating artificial peptide moieties, have been synthesized and their use in the preparation of metal catalysts and organogelators has been investigated. Ru(II) complexes derived from these ligands showed electrochemical behavior and activity as catalysts in the epoxidation of olefins similar to that of Beller's catalyst. As organogelators, these conjugates were able to gelate a variety of solvents, from toluene to methanol, with satisfactory mgc (minimum gelation concentration) values. The presence of 4′-(4-carboxy)phenylterpyridine (hcptpy) moiety allows tuning the gelling properties and also influences the supramolecular self-assembling mode to produce chiral aggregates with respect to parent peptides DP and TP. In the case of the conjugates, π?π interactions provided by the aromatic moieties cooperate with inter-molecular hydrogen bonding between NH and CO in the amide groups. Further properties of peptide/terpyridine conjugates are under investigation in view of future applications.
Polymer-bound chiral (salen)Mn(III) complex as heterogeneous catalyst in rapid and clean enantioselective epoxidation of unfunctionalised olefins
Minutolo, Filippo,Pini, Dario,Salvadori, Piero
, p. 3375 - 3378 (1996)
The application of a new polystyrene-divinylbenzene system containing an optically active (salen)Mn(III) complex in asymmetric epoxidation of unfunctionalised olefins is reported. This system showed a remarkably high reaction speed in the conditions descr
Selenoxides as catalysts for epoxidation and Baeyer-Villiger oxidation with hydrogen peroxide
Goodman, Margaret A.,Detty, Michael R.
, p. 1100 - 1104 (2006)
Aryl benzyl selenoxides are catalysts for the epoxidation of various olefinic substrates and the Baeyer-Villiger oxidation of aldehydes and ketones with H2O2 in CH2Cl2 at 2.5 mol% catalyst. Benzyl 3,5-bis(trifluoromethyl)phenyl selenoxide (4) was the most effective catalyst while 2-(dimethylamino)phenyl benzyl selenoxide was the least. Mono-, di-, and trisubstituted alkenes were epoxidized and adamantanone, cyclohexanone, and 3,4,5-trimethoxybenzaldehyde underwent Baeyer-Villiger oxidation using 4 and H2O2. Competition studies showed that epoxidation reactions were faster than Baeyer-Villiger oxidations although the selectivity varied only from 1.3:1 to 4.6:1. Georg Thieme Verlag Stuttgart.
High-yield epoxidations with hydrogen peroxide and tert-butyl hydroperoxide catalyzed by iron(III) porphyrins: Heterolytic cleavage of hydroperoxides
Traylor, Teddy G.,Tsuchiya, Shinji,Byun, Young-Seok,Kim, Cheal
, p. 2775 - 2781 (1993)
The reactions of hydrogen peroxide or tert-butyl hydroperoxide with cyclooctene and norbornene, catalyzed by iron(III) tetrakis(pentafluorophenyl)porphyrin chloride and other electronegatively-substituted porphyrins, produce 60-100% epoxide yields. The ep