The scope of the magnesium monoperoxyphthalate (MMPP) oxidation of sulfides to sulfoxides has been extended by using hydrated silica gel as a solid support in dichloromethane media. This procedure works in the presence of a number of functional groups on the sulfides, including carbonyl and alkene groups that have been known to undergo Baeyer-Villiger oxidation and epoxidation with MMPP when using more conventional procedures. To our knowledge, this is the first example of oxidation of sulfides containing a carbonyl group with MMPP in non-aqueous media without any Baeyer-Villiger reaction. The reported procedure is easy to perform, product separation is trivial and it produces excellent yields.
水合
硅胶作为固体载体在
二氯甲烷介质中扩大了
镁单过氧邻苯二甲酸酯(M
MPP)对
硫化物氧化生成亚砜的适用范围。该方法在
硫化物中含有多种官能团的情况下均有效,包括已知在常规方法中会与M
MPP发生拜耶尔-维利格氧化和环氧化反应的羰基和烯烃官能团。据我们所知,这是首次在非
水介质中使用M
MPP对含有羰基的
硫化物进行氧化而不发生拜耶尔-维利格反应的例子。该方法操作简便,产物分离简单,且产率优异。