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 path for the preparation of leaf alcohol with 3-chloropropanol, triphenylphosphine and propionaldehyde through Wittig reaction was studied.

本文研究了以3-氯丙醇， 三苯基膦和丙醛为原料利用威蒂希反应合成叶醇的新路线。

A series of novel purpurin-18 imide derivatives with long absorption wavelength were synthesized through Wittig reaction of methyl pheophorbide-a.

合成的一系列红紫素-18酰亚胺衍生物具有长波长的紫外吸收。