Stereochemical course of the hydrogen migration in the boron trifluoride etherate-catalyzed rearrangement of 1,1-disubstituted epoxides
作者:Noriyuki Hara、Akiyoshi Mochizuki、Akinori Tatara、Yoshinori Fujimoto
DOI:10.1016/s0957-4166(00)00139-7
日期:2000.5
regioselectively deuterated 1,1-disubstituted epoxides to aldehydic products revealed that the two hydrogens migrate at the migration terminus with opposite stereochemical preferences, i.e. the hydrogen anti to the bulky substituent prefers to migrate with inversion of configuration, whereas the hydrogen syn to the bulky substituent prefers to migrate with retention of configuration.
在BF机理研究3 ·的Et 2光学活性的O形催化的重排,区域选择性氘化1,1-二取代的环氧化物以醛产品,发现该两个氢即氢迁移在具有相反立体化学的喜好迁移末端,反到笨重取代基倾向于以构型反转迁移,而氢与大取代基的合成倾向于以构型保留迁移。