<i>Meta</i>- and <i>Para</i>-Difunctionalization of Arenes via a Sulfoxide−Magnesium Exchange Reaction
作者:Christian B. Rauhut、Laurin Melzig、Paul Knochel
DOI:10.1021/ol801431z
日期:2008.9.1
The aryl sulfoxide moiety (ArSO) allows an expedient two-step meta-, para-difunctionalization of readily available diarylsulfoxides. In the first step, the sulfoxide plays the role of a directing metalation group. In the second step, triggered by i-PrMgCl x LiCl, it becomes a leaving group and undergoes a regioselective sulfoxide-magnesiumexchange.
芳基亚砜部分(ArSO)可以方便地进行易得的二芳基亚砜的两步间,对二官能化。在第一步中,亚砜起着直接金属化基团的作用。在第二步中,由i-PrMgCl x LiCl触发,它成为一个离去基团,并进行区域选择性的亚砜-镁交换。