Synthesis of γ-Hydroxy-α,β-unsaturated Esters and Nitriles from Chiral Cyanohydrins
作者:Jan Marcus、Pauline J. van Meurs、Adrianus M.C.H. van den Nieuwendijk、Mathieu Porchet、Johannes Brussee、Arne van der Gen
DOI:10.1016/s0040-4020(00)00085-5
日期:2000.4
and carbethoxymethyl diphenylphosphine oxides with a range of O-protected chiral α-hydroxy aldehydes is described. The α-hydroxy aldehydes were prepared with high enantiomeric purity from chiral O-protected cyanohydrins. The γ-hydroxy-α,β-unsaturated compounds formed were isolated in high enantiomeric purity and excellent yield. In all cases complete E-selectivity was observed.
描述了氰甲基和碳乙氧基甲基二苯基膦氧化物与一系列O保护的手性α-羟基醛的霍纳-维蒂希反应。由手性O-保护的氰醇制备具有高对映体纯度的α-羟基醛。分离出形成的γ-羟基-α,β-不饱和化合物,具有高对映体纯度和极佳的收率。在所有情况下,观察到完全的E-选择性。