Highly chemoselective synthesis of aryl allylic sulfoxides through calcium hypobromite oxidation of aryl allylic sulfides
作者:Vittorio Pace、Laura Castoldi、Wolfgang Holzer
DOI:10.1016/j.tetlet.2011.12.046
日期:2012.2
A highly chemoselective oxidation of widely substituted aryl allylic sulfides, prepared by allylation of arylthioethers with KF-Celite, to the corresponding aryl allylic sulfoxide was achieved by employing calcium hypobromite. Neither over-oxidation to sulfones nor halogenation of the aromatic rings was observed. The protocol may be successfully applied for the oxidation of substituted allylic systems
通过使用次溴酸钙将芳基硫醚与KF-Celite烯丙基化而制备的广泛取代的芳基烯丙基硫醚高度化学选择性氧化成相应的芳基烯丙基亚砜。既未观察到砜的过度氧化也未观察到芳环的卤化。该方案可以成功地用于本身可以与氧化剂相互作用的取代的烯丙基系统(即2-卤代烯丙基)的氧化。