The role of acyloxyphosphonium ions and the stereochemical influence of base in the phosphorane-mediated esterification of alcohols

被引:55
作者
McNulty, J
Capretta, A
Laritchev, V
Dyck, J
Robertson, AJ
机构
[1] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada
[2] Brock Univ, Dept Chem, St Catharines, ON L2S 3A1, Canada
[3] Cytec Canada Inc, Niagara Falls, ON L2E 6T4, Canada
关键词
acylation; amines; peroxides; phosphanes; synthetic methods;
D O I
10.1002/anie.200351209
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Intimate details of the Mitsunobu mechanism: The trapping of an acyloxytributylphosphonium ion with a chiral secondary alcohol leads to either retention or inversion of stereochemistry in the resulting ester depending on the exclusion or inclusion of a base (see scheme). Insight into the mechanism of phosphorane-mediated esterification processes is presented.
引用
收藏
页码:4051 / 4054
页数:4
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