The enantioselective Michael addition of thiols to (E)-3-crotonoyloxazolidin-2-one was effectively catalyzed by the Fe(BF4)2·6H2O/(S,S)-ip-Pybox catalyst, and the addition product was obtained with up to a 95% ee.
对映选择性迈克尔加成硫醇至(Ë)-3- crotonoyloxazolidin -2-酮被有效利用的Fe(BF催化4)2 ·6H 2 O /(小号,小号) - IP -Pybox催化剂和加成产物是获得高达95%的ee。
Asymmetric Conjugate Addition of Thiols to a 3-(2-Alkenoyl)-2-oxazolidinone Catalyzed by the DBFOX/Ph Aqua Complex of Nickel(II) Perchlorate
作者:Shuji Kanemasa、Yoji Oderaotoshi、Eiji Wada
DOI:10.1021/ja991064g
日期:1999.9.1
Asymmetric conjugate addition of thiols to (E)-3-crotonoyloxazolidin-2-one by iron or cobalt/pybox catalyst
The enantioselective conjugate addition of thiols to (E)-3-crotonoyloxazolidin-2-one was effectively catalyzed by the Fe(BF4)(2)center dot 6H(2)O/(S,S)-ip-pybox catalyst. and the addition product was obtained with up to a 95% ee. Furthermore, the CO(ClO4)(2)center dot 6H(2)O/(S,S)-ip-pybox catalyst also catalyzed the same reaction with a high enantioselectivity. (c) 2008 Elsevier Ltd. All rights reserved.