作者:Chunbao Li、Guobiao Chu、Yanqiao Zhang、Yuqing Zhang
DOI:10.1055/s-0029-1216992
日期:2009.11
A new and efficient synthesis of benzyl chlorides and methylene acetals by use of 2,4-dichloro-6-methoxy[1,3,5]triazine (MeOTCT) and dimethyl sulfoxide has been developed. Chlorides are the major products for benzyl alcohols, while methylene acetals are the major products for secondary alcohols. This procedure provides the highest yields so far for methylene acetals of steroids. A plausible mechanism
已开发出一种新的有效的合成苄基氯和亚甲基乙缩醛的方法,是使用2,4-二氯-6-甲氧基[1,3,5]三嗪(MeOTCT)和二甲基亚砜。氯化物是苯甲醇的主要产品,而亚甲基缩醛是仲醇的主要产品。迄今为止,该方法为类固醇的亚甲基缩醛提供了最高的收率。在实验的基础上提出了一个合理的机制。 2,4-二氯-6-甲氧基[1,3,5]三嗪-二甲基亚砜-醇-苄基氯-亚甲基缩醛