Asymmetric synthesis of (+)-citrinin using an ortho-toluate carbanion generated by a chiral base
作者:Andrew C. Regan、James Staunton
DOI:10.1039/c39870000520
日期:——
The carbanion (3), generated using the chiral lithium amide base (1), undergoes enantioselective addition to acetaldehyde and acetone with a high degree of asymmetric induction at the nucleophilic centre; the reaction with acetaldehyde is exploited in an enantioselective synthesis of (+)-citrin (10).
使用手性锂酰胺碱(1)生成的碳负离子(3)在亲核中心高度不对称地诱导乙醛和丙酮的对映选择性加成;与乙醛的反应被用于(+)-柠檬酸(10)的对映选择性合成中。