Short-step synthesis of chiral C2-symmetric 2,3,4,5-tetrasubstituted pyrrolidines from D-mannitol and their use as chiral ligands in the reaction of diethylzinc and benzaldehyde
作者:Yukio Masaki、Hirohisa Oda、Kenichi Kazuta、Akira Usui、Akichika Itoh、Fang Xu
DOI:10.1016/s0040-4039(00)61197-8
日期:1992.8
rolidine and related chiral C2-Symmetric pyrrolidines including D2-symmetric 1,2-bis(1-pyrrolidino)-ethanes and N-hydroxyethylpyrrolidines were synthesized highly practically from D-mannitol and a high chiral induction of 82% ee was observed in investigation of efficiency of these amines as chiral catalyst ligands in the addition reaction of diethylzinc to benzaldehyde.
(3R,4R)-双(羟基)-(2S,5S)-双(羟甲基)-吡咯烷和相关的手性C 2-对称吡咯烷,包括D 2-对称的1,2-双(1-吡咯烷)。 -乙烷和N-羟乙基吡咯烷实际上是由D-甘露糖醇合成的,在研究这些胺作为手性催化剂配体在二乙基锌与苯甲醛加成反应中的效率方面,观察到82%ee的高手性诱导。