Vinyl anion equivalent V. Asymmetric synthesis of allylic alcohols using chiral 2-(trialkylsilyl)ethyl sulfoxides
作者:Shinya Kusuda、Yoshio Ueno、Takeshi Toru
DOI:10.1016/s0040-4020(01)80816-4
日期:1994.1
Both enantiomers of optically pure secondary allylic alcohols can be conveniently prepared by the diastereoselective reaction of the α-sulfinyl carbanion of p-tolyl 2-(trialkylsilyl)ethyl sulfoxides or tert-butyl 2-(trimethylsilyl)ethyl sulfoxide with aldehydes followed by either fluoride-induced desilylsulfinylation or thermal elimination of the sulfinyl group.
光学纯的仲烯丙基醇的两种对映异构体可通过对甲苯基2-(三烷基甲硅烷基)乙基亚砜或叔丁基2-(三甲基甲硅烷基)乙基亚砜的α-亚磺酰基碳负离子与醛随后进行氟化的非对映选择性反应方便地制备。-诱导的亚甲硅烷基亚磺酰基化或亚氨基的热消除。