Selective .gamma.-substitution of .alpha.,.beta.-unsaturated esters via .alpha.-trimethylsilyl .beta.,.gamma.-unsaturated esters
作者:Pamela Albaugh-Robertson、John A. Katzenellenbogen
DOI:10.1021/jo00174a026
日期:1983.12
Counterion effects on geometric control in the Peterson reaction of bistrimethylsilyl esters: synthetic scope and mechanistic implications
作者:Robert K. Boeckman、Richard L. Chinn
DOI:10.1016/s0040-4039(01)80838-8
日期:1985.1
An interesting and useful level of geometriccontrol can be read in the reaction of enolates derived from bistrimethylsilyl acetates and aldehydes leading to a-trimethylsilyl esters and derived compounds depending upon the cation employed. Mechanistic experiments are described which suggest that chelation may play a role in the origin of the observed selectivities.