Synthesis of enantiomerically pure threo 1-alkyl-2-benzyloxy-propylamines
摘要:
Pure (1S,2S)-1-Butyl- and (1S,2S)-1-isobutyl-2-benzyloxy-propylamine have been synthesized in 5 steps and 62% overall yield from (S)-ethyl lactate. It was found that BuLi and i-BuMgBr add readily and diastereoselectively (d.e. > 96%) to alpha-benzyloxypropionaldehyde dimethylhydrazone and that hydrogenolysis proceeds in high yield and without epimerization.
Synthesis of enantiomerically pure threo 1-alkyl-2-benzyloxy-propylamines
摘要:
Pure (1S,2S)-1-Butyl- and (1S,2S)-1-isobutyl-2-benzyloxy-propylamine have been synthesized in 5 steps and 62% overall yield from (S)-ethyl lactate. It was found that BuLi and i-BuMgBr add readily and diastereoselectively (d.e. > 96%) to alpha-benzyloxypropionaldehyde dimethylhydrazone and that hydrogenolysis proceeds in high yield and without epimerization.
Synthesis of enantiomerically pure threo 1-alkyl-2-benzyloxy-propylamines
作者:Arlette Solladié-Cavallo、Frédérique Bonne
DOI:10.1016/0957-4166(95)00433-5
日期:——
Pure (1S,2S)-1-Butyl- and (1S,2S)-1-isobutyl-2-benzyloxy-propylamine have been synthesized in 5 steps and 62% overall yield from (S)-ethyl lactate. It was found that BuLi and i-BuMgBr add readily and diastereoselectively (d.e. > 96%) to alpha-benzyloxypropionaldehyde dimethylhydrazone and that hydrogenolysis proceeds in high yield and without epimerization.