英语语法分析

Also, the high stereoselectivity of the Wittig olefination has been well rationalized.

同时，对该烯化反应所表现出的高度立体选择性作了合理解释。

A new olefination methodology based on the nucleophile attacking fluorinated phosphonates.

亲核试剂对全氟酰基膦酸酯进攻为基础的新合成方法学。