The epoxide opening reactions of erythro and threo epoxy alcohols with a variety of nucleophiles, both in the presence and absence of Ti(OiPr)4, were examined. In general, opening of threo epoxy alcohols proceeded faster and with higher selectivity than the same reaction with the corresponding erythro isomers.
在 Ti(OiPr)4 存在和不存在的情况下,研究了赤式和苏式环
氧醇与各种亲核物的
环氧化物开环反应。一般来说,与相应的赤式异构体发生的相同反应相比,苏式环
氧醇的开启速度更快,选择性更高。