Asymmetric synthesis of spirocyclic pyrrolidines and tetrahydrofurans by chiral aldol reactions and phenylthio migration
作者:Kelly Chibale、Stuart Warren
DOI:10.1016/0040-4039(91)80244-z
日期:1991.11
Highly enantioselective aldol reactions of the boron enolate of (S)-N-propionyl-4-(phenylmethyl)-2-oxazolidinone with α-phenylthio cycloalkanecarbaldehydes were achieved. Cyclisation of the chiral phenylthio sulphonamide and diols gave the title compounds in excellent yields and enantiomeric excess.
实现了(S)-N-丙酰基-4-(苯基甲基)-2-恶唑烷酮的烯醇硼与α-苯硫基环烷甲醛的高度对映选择性醛醇缩合反应。手性苯硫基磺酰胺和二醇的环化以优异的收率和过量的对映体得到标题化合物。