172585-58-9Relevant articles and documents
The effect of vinyl esters on the enantioselectivity of the lipase-catalysed transesterification of alcohols
Kawasaki, Masashi,Goto, Michimasa,Kawabata, Shigeki,Kometani, Tadashi
, p. 585 - 596 (2007/10/03)
The enantioselectivity of the lipase from Pseudomonas cepacia (PCL) in the transesterification of 2-phenyl-1-propanol 1 was studied using a series of vinyl 3-arylpropanoates as acyl donors. The most enantioselective transesterification reaction of the alcohol was attained by using vinyl 3-(p-iodophenyl)- or 3-(p-trifluoromethylphenyl)propanoates, with enantiomer ratios, E, of 116 and 138, respectively. Vinyl 3-phenylpropanoate was also effective for the resolution of 1 mediated by lipases from P. fluorescens and porcine pancreas and for the PCL-catalysed transesterification of several 2-phenyl-1-alkanols. The enantiomeric resolution of 1 was practically carried out by the first enantioselective transesterification using PCL and vinyl 3-(p-iodophenyl)propanoate to afford (R)-1 and then the enantioselective hydrolysis of the resultant ester to afford (S)-1.
Enantioselective acylation of primary and secondary alcohols catalyzed by lipase QL from Alcaligenes sp.: A predictive active site model for lipase QL to identify which enantiomer of an alcohol reacts faster in this acylation
Naemura, Koichiro,Murata, Masaki,Tanaka, Rie,Yano, Masashi,Hirose, Keiji,Tobe, Yoshito
, p. 3285 - 3294 (2007/10/03)
Lipase QL (from Alcaligenes sp.)-catalyzed acylation of alcohols using isopropenyl acetate as the acylating agent in diisopropyl ether converted preferentially primary alcohols with an S configuration and secondary alcohols with an R configuration into the corresponding homochiral acetates. On the basis of observed enantiomer selectivities, a predictive active site model for lipase QL is proposed for identifying which enantiomer of a primary or a secondary alcohol reacts faster in this acylation. Copyright (C) 1996 Published by Elsevier Science Ltd.
DIFFERENCES IN REACTIVITY AND ENANTIOSELECTIVITY IN LIPASE REACTIONS WITH CARBOXYLIC ESTERS AND ALCOHOLS BEARING THE SAME STEREOGENIC CENTER
Sih, John C.,Gu, Rui Lin
, p. 357 - 360 (2007/10/02)
The reaction rate and stereochemical outcome of lipase reactions obtained with carboxylic esters and alcohols, which contain the same stereogenic center, can be modulated by changing the mode of the lipase reaction, i.e. ester hydrolysis versus alcohol acetylation.
Lipase YS-catalysed Acylation of Alcohols: a Predictive Active Site Model for Lipase YS to Identify which Enantiomer of a Primary or a Secondary Alcohol Reacts Faster in this Acylation
Naemura, Koichiro,Fukuda, Ritsuko,Konishi, Masayoshi,Hirose, Keiji,Tobe, Yoshito
, p. 1253 - 1256 (2007/10/02)
Primary alcohols having a hydroxymethyl group at an S chiral centre and secondary alcohols with an R configuration are preferentially acylated to give the corresponding acetates by lipase YS-catalysed acylation in diisopropyl ether; a predictive cubic-spaced active site model for lipase YS is proposed for identifying which enantiomer of a primary or a secondary alcohol reacts faster in this acylation.