Resolution of pentafluorophenyl 2-phenylpropanoate using combinations of quasi-enantiomeric oxazolidin-2-ones
摘要:
The kinetic, mutual and parallel resolution of a series of structurally related active esters derived from 2-phenylpropanoic acid using a combination of quasi-enantiomeric oxazolidin-2-ones is discussed. (C) 2011 Elsevier Ltd. All rights reserved.
Resolution of pentafluorophenyl 2-phenylpropanoate using combinations of quasi-enantiomeric oxazolidin-2-ones
摘要:
The kinetic, mutual and parallel resolution of a series of structurally related active esters derived from 2-phenylpropanoic acid using a combination of quasi-enantiomeric oxazolidin-2-ones is discussed. (C) 2011 Elsevier Ltd. All rights reserved.
Parallel Kinetic Resolution of 1-Phenylethanol Using <i>Quasi</i>-Enantiomeric Active Esters
作者:Jason Eames、Elliot Coulbeck
DOI:10.1055/s-2008-1032068
日期:2008.2
The parallel kinetic resolution of racemic 1-phenylethanol using an equimolar combination of quasi-enantiomeric pentafluorophenyl esters is discussed. The levels of diastereoselectivity were excellent (>88% de) leading to separable quasi-enantiomeric esters in good yields.
Carbene-Catalyzed Dynamic Kinetic Resolution of Carboxylic Esters
作者:Xingkuan Chen、Jacqueline Zi Mei Fong、Jianfeng Xu、Chengli Mou、Yunpeng Lu、Song Yang、Bao-An Song、Yonggui Robin Chi
DOI:10.1021/jacs.6b00406
日期:2016.6.15
Carbene-catalyzed reaction of carboxylicesters has the potential to offer effective synthetic solutions that cannot be readily achieved by using the more conventional aldehyde-type substrates. Here we report the first carbene-catalyzed dynamic kinetic resolution of α,α-disubstituted carboxylicesters with up to 99:1 er and 99% yield. The present study clearly illustrates the unique power of carbene-catalyzed
Resolution of Pentafluorophenyl Active Esters Using (S)-4-Phenyloxazolidin-2-thione
作者:Jason Eames、Najla Al Shaye、Tom Broughton、Elliot Coulbeck
DOI:10.1055/s-0028-1088218
日期:2009.4
A series of structurally related racemic pentafluorophenyl active esters were resolved using an equimolar amount of (S)-4-phenyloxazolidin-2-thione. The levels of diastereocontrol were found to be excellent (>86% de at Ë30% conversion).
The parallelkineticresolution of racemic pentafluorophenyl 2-phenylpropionate using an equimolar combination of quasi-enantiomeric oxazolidin-2-ones is discussed. The levels of diastereoselectivity were excellent (>90% de) leading to separable quasi-enantiomeric oxazolidin-2-one adducts in good yield. This methodology was subsequently used to resolve a series of 2-aryl propionic and butanoic acids