67963-68-2Relevant articles and documents
A new aza-BODIPY based NIR region colorimetric and fluorescent chemodosimeter for fluoride
Zou, Bin,Liu, Hui,Mack, John,Wang, Sisi,Tian, Jiangwei,Lu, Hua,Li, Zhifang,Shen, Zhen
, p. 53864 - 53869 (2014)
The synthesis and characterization of a novel NIR region fluoride sensor, that makes use of the aza-boron-dipyrromethene (aza-BODIPY) fluorophore, is described. An arylmagnesium bromide was formed by reacting 4-bromophenol with a tert-butyldimethylsilyl p
Synthesis and characteristics of novel TPA-containing electrochromic poly(ether sulfone)s with dimethylamino substituents
Huang, Chiao-Ling,Kung, Yu-Ruei,Liou, Guey-Sheng,Shao, Yu-Jen
, (2021)
Newly designed dimethylamine-substituted triphenylamine (TPA) derivatives, N,N'-(1,4-phenylene)bis(N-(4-((tert-butyldimethylsilyl)oxy)phenyl)-N'',N''-dimethylbenzene-1,4-diamine) (NTPPA-2Si) and N,N'-((1,1′-biphenyl)-4,4′-diyl)bis(N-(4-((tert-butyldimethy
Use of Silylated Formiates as Hydrosilane Equivalents
-
Paragraph 0514, (2021/09/26)
The present invention relates to a method for preparing organic compounds of formula (I) by reaction between a silylated formiate of formula (II) and an organic compound in the presence of a catalyst and optionally of an additive. The invention also relates to use of the method for preparing organic compounds of formula (I) for the preparation of reagents for fine chemistry and for heavy chemistry, as well as in the production of vitamins, pharmaceutical products, adhesives, acrylic fibres, synthetic leathers, and pesticides.
Fenton chemistry for Achmatowicz rearrangement
Zhao, Guodong,Liang, Lixin,Wang, Eryu,Tong, Rongbiao
, p. 3740 - 3748 (2021/04/07)
Achmatowicz rearrangement (AchR) is a very important transformation for the synthesis of various heterocyclic building blocks and natural products. Here, the discovery of Fenton chemistry for AchR using a bifunctional catalyst (FeBr2 or CeBrsu
Green bromination method
-
Paragraph 0035-0037, (2021/06/13)
The invention discloses a green bromination method, and belongs to the field of green organic chemistry. Under the conditions of room temperature, opening and neutrality, reaction raw materials are aromatic hydrocarbon, olefin, alkyne, tryptamine, tryptophane and derivatives thereof with different functional groups, a bromine source is MBrx (M is Fe , Fe , Ce and the like, and x is 2-3), and the unique oxidant is H2O2. Brominated alkanes, alkenes, aromatic hydrocarbons, pyrrolo-indolines and furo-indolines and derivatives thereof can be produced. The bromination reaction is carried out by using easily available and cheap reagents (such as FeBr2, CeB3 and H2O2) in the market and the solvent, and the method has the characteristics of mild reaction conditions, wide substrate application range, simple steps, easiness in operation and no need of separation, is a green, environment-friendly and safe bromination reaction method, and has a good application prospect.
Structure-Activity Relationship and Mode-Of-Action Studies Highlight 1-(4-Biphenylylmethyl)-1H-imidazole-Derived Small Molecules as Potent CYP121 Inhibitors
Walter, Isabell,Adam, Sebastian,Gentilini, Maria Virginia,Kany, Andreas M.,Brengel, Christian,Thomann, Andreas,Sparwasser, Tim,K?hnke, Jesko,Hartmann, Rolf W.
, p. 2786 - 2801 (2021/06/27)
CYP121 of Mycobacterium tuberculosis (Mtb) is an essential target for the development of novel potent drugs against tuberculosis (TB). Besides known antifungal azoles, further compounds of the azole class were recently identified as CYP121 inhibitors with
Acylative desymmetrization of cyclic meso-1,3-diols by chiral DMAP derivatives
Mandai, Hiroki,Hironaka, Tsubasa,Mitsudo, Koichi,Suga, Seiji
supporting information, p. 471 - 474 (2021/03/15)
An efficient enantioselective acylative desymmetrization of cyclic meso-1,3-diols was developed by using a chiral DMAP derivative 1e having a 1,1¤-binaphthyl unit. The reactions required only 0.5mol% of the catalyst and showed good to excellent enantioselectivity. With this transformation, 5a, a key building block for the synthesis of natural products, was easily obtained in almost enantiomerically pure form after a single recrystallization. Control experiments revealed that tert-alcohol units on the catalyst were responsible for both the catalytic activity and enantioselectivity.
Polymerizable compounds. Liquid crystal composition and liquid crystal display device
-
Paragraph 0079-0080, (2021/09/08)
A polymerizable compound having a formula of formula (I): Ring A, ring B, Z1 , Z2 , R, P, n And m are as described in the specification and the application patent range, respectively. The liquid crystal composition containing the pol
Carbosulfenylation of Alkenes with Organozinc Reagents and Dimethyl(methylthio)sulfonium Trifluoromethanesulfonate
Tang, Meizhong,Han, Shuxiong,Huang, Shenglan,Huang, Shenlin,Xie, Lan-Gui
supporting information, p. 9729 - 9734 (2020/12/21)
The electrophilic alkylthiolation of alkenes, initiated by dimethyl(methylthio)sulfonium salts and the subsequent addition of various heteronucleophilies has been well-established. Regarding the use of carbon nucleophiles, however, only carefully designed sp-type carbon sources have been successfully applied. We herein present our findings on the methylthiolation of alkenes with dimethyl(methylthio)sulfonium trifluoromethanesulfonate, followed by carbon-carbon bond formation in the presence of organozinc reagents, thus achieving a catalyst-free protocol toward to the carbosulfenylation of alkenes.
Shuttling Catalyst: Facilitating C?C Bond Formation via Cross-Couplings with a Thermoresponsive Polymeric Ligand
Wang, Erfei,Zhang, Jiawei,Zhong, Zhuoran,Chen, Kaixuan,Chen, Mao
, p. 419 - 423 (2020/01/08)
A poly(ethylene glycol) (PEG) linked ortho-MeO-phenyldicyclohexylphosphine (MeO-WePhos) ligand has been synthesized to promote Pd-catalyzed carbon-carbon bond formation by cross-couplings including Sonogashira, Heck, Hiyama and Stille reactions, providing corresponding (hetero)aryl substituted alkynes, alkenes and bi(hetero)aryls in good to excellent isolated yields with low Pd loadings. Facilitated by the lower critical solution temperature behaviour of the polymeric monophosphine ligand, the metal-complex could rapidly shuttle between organic and water phases as regulated by temperature, enabling highly efficient catalyst recycling via a simple phase separation. The chemical structure of ligand was determined by matrix-assisted laser desorption/ionization-time of flight mass spectrometry, nuclear magnetic resonance spectrometry and size-exclusion chromatography measurements. Notably, as demonstrated by the inductively coupled plasma-atomic emission spectrometry measurement, 98% Pd was kept in the water phase after 6 cycles of catalyst recycling experiments. Given the profound impact of transition-metal-catalyzed covalent bond formation and the increasing demand of sustainable chemistry, this work provides an alternative method to conduct cross-couplings with a polymeric shuttling catalyst.