英语语法分析

A typical example is the oxidation of ethylbenzene to prepare acetophenone.

其中最有代表性的是乙苯氧化制苯乙酮。

The yield of benzylidene acetophenone reached 31.4% under optimal conditions.

在最佳条件下，苄叉乙酰苯的收率可达31.4%。

Asymmetric reduction of acetophenone derivatives preparing chiral aromatic alcohol has become a new focus of study.

苯乙酮衍生物的不对称还原合成手性醇，制备手性药物是现在研究的热点。