英语语法分析

Diastereoselective transfer of the diazene hydrogen to one face of the prochiral alkene was studied.

研究了重氮烯氢向前手性烯烃单侧的非对映选择性转移。

The hydrocarbon must be an alkene.

这个碳氢化合物必定是烯烃。

The Alkene Double Bond: a Focus of Reactivity.

烯烃的双键：重点是反应活性。