290374-44-6Relevant academic research and scientific papers
Enantioselective cyanosilylation of aldehydes catalyzed by a multistereogenic salen-Mn(III) complex with a rotatable benzylic group as a helping hand
Wei, Yun-Long,Huang, Wei-Sheng,Cui, Yu-Ming,Yang, Ke-Fang,Xu, Zheng,Xu, Li-Wen
, p. 3098 - 3103 (2015/02/02)
A multistereogenic salen-Mn(iii) complex bearing an aromatic pocket and two benzylic groups as helping hands was found to be efficient in the catalysis of asymmetric cyanosilylation. The salen-Mn catalyst partially mimics the functions of biocatalysts by
Enantioselective cyanosilylation of aldehydes catalyzed by novel camphor derived Schiff bases-titanium(IV) complexes
B?ocka, Ewelina,Bosiak, Mariusz J.,We?niak, Miros?aw,Ludwiczak, Agnieszka,Wojtczak, Andrzej
, p. 554 - 562 (2014/05/06)
Five tridentate Schiff bases have been prepared from (1R,2S,3R,4S)-3-amino- 1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol and salicylaldehydes. X-ray structure investigation revealed differences in their molecular conformation, and their titanium(IV) complexes
Enantioselective hydrocyanation of aldehydes catalyzed by [Li{Ru(phgly)2(binap)}]X (X = Cl, Br)
Kurono, Nobuhito,Yoshikawa, Tatsuya,Yamasaki, Mikio,Ohkuma, Takeshi
supporting information; experimental part, p. 1254 - 1257 (2011/05/02)
Novel bimetallic complexes [Li{Ru[(S)-phgly]2[(S)-binap]}]X (X = Cl, Br) are readily synthesized by mixing Ru[(S)-phgly]2[(S)-binap] and LiX. A single-crystal X-ray analysis reveals the structure. These bimetallic complexes efficient
Enzymatic kinetic resolution of racemic cyanohydrins via enantioselective acylation
Xu, Qing,Xie, Yongli,Geng, Xiaohong,Chen, Peiran
experimental part, p. 624 - 630 (2010/09/07)
Enzymatic kinetic resolution of a series of aromatic and aliphatic cyanohydrins in organic media has been investigated. The behavior of potential lipases, molecular sieves, acyl reagent, reaction temperature, and organic solvents on the kinetic resolution was studied. The influence of substrate structure, steric, and electronic nature and position of the aryl substituent on the enantioselectivity was discussed. Under the optimized reaction conditions, good enantioselectivity could be achieved for most of the investigated compounds. Specifically, substrates 1a, 1c, 1d, 1f, 1u could be resolved with the kinetic enantiomer ratio (E) higher than 200.
[Ru(phgly)2(binap)]/Li2CO3: A Highly Active, Robust, and Enantioselective Catalyst for the Cyanosilylation of Aldehydes
Kurono, Nobuhito,Arai, Kenta,Uemura, Masato,Ohkuma, Takeshi
supporting information; experimental part, p. 6643 - 6646 (2009/03/12)
The right combination: A series of aromatic, heteroaromatic, aliphatic, and α,β-unsaturated aldehydes can be converted into the desired silylated cyanohydrins by reaction with (CH3)3SiCN and a catalyst system consisting of the combination of a chiral ruthenium complex and Li2CO3 (see scheme). The reaction is highly enantioselective and affords the R products with up to 98% ee within 24 h at a substrate-tocatalyst ratio of 10000:1. (Chemical Equation Presented).
Kinetic resolution of cyanohydrins via enantioselective acylation catalyzed by lipase PS-30
Xu, Qing,Geng, Xiaohong,Chen, Peiran
scheme or table, p. 6440 - 6441 (2009/04/06)
By using lipase PS-30 as catalyst, the kinetic resolution of a series of racemic cyanohydrins has been achieved via enantioselective acylation. The values of kinetic enantiomeric ratio (E) reached up to 314. Substituent effect is also briefly discussed.
An R-selective hydroxynitrile lyase from Arabidopsis thaliana with an α/β-hydrolase fold
Andexer, Jennifer,Von Langermann, Jan,Mell, Annett,Bocola, Marco,Kragl, Udo,Eggert, Thorsten,Pohl, Martina
, p. 8679 - 8681 (2008/09/18)
Folding and selectivity: The noncyanogenic plant Arabidopsis thaliana contains a new hydroxynitrile lyase, which was cloned and characterized. This enzyme is readily available form a recombinant source, has a broad range of substrates, and enantioselectively transforms aliphatic and aromatic aldehydes as well as ketones into the corresponding R-cyanohydrins. (Chemical Equation Presented).
(R)-Oxynitrilase-catalyzed hydrocyanation: The first synthesis of optically active fluorinated mandelonitriles
Han, Shiqing,Chen, Peiran,Lin, Guoqiang,Huang, Hao,Li, Zuyi
, p. 843 - 846 (2007/10/03)
The first enantioselective synthesis of (R)-fluorinated mandelonitriles, by hydrocyanation under micro-aqueous conditions with almond meal as catalyst is reported.
