(S)-(−)-2-tert-butyl-3-methylene-oxirane: Synthesis and hydroboration of a chiral allene oxide
作者:Toshiro Konoike、Tetsuyoshi Hayashi、Yoshitaka Araki
DOI:10.1016/0957-4166(94)80126-6
日期:1994.8
The chiral allene oxide, (S)-(−)-2-tert-butyl-3-methylene-oxirane 12 ((S)-(−)-1-tert-butylallene oxide) was prepared in a moderate yield and in high enantiomeric excess by a three-step conversion starting from 4,4-dimethyl-2-pentyn-1-ol 6. The procedure was comprised of hydrostannylation, Sharpless epoxidation and deoxystannylation. The chiral allene oxide 12 has moderate stability for identification
以适中的产率和高的收率制备了手性氧化烯,(S)-(-)-2-叔丁基-3-亚甲基-环氧乙烷12((S)-(-)-1-叔丁基氧化烯)从4,4-二甲基-2-戊炔-1-醇6开始,通过三步转化得到对映体过量。该过程包括加氢甲氧基化,尖锐环氧化和脱氧甲锡化。手性氧化烯12具有适度的稳定性用于鉴定和表征,并进行硼氢化反应,得到手性二醇,(R)-4,4-二甲基戊烷-1,3-二醇15。