A highly efficient heterogeneous copper-catalyzed chlorodeboronation of arylboronic acids leading to chlorinated arenes
作者:Wen He、Rongli Zhang、Mingzhong Cai
DOI:10.1039/c6ra25666j
日期:——
heterogeneous copper-catalyzed chlorodeboronation of arylboronic acids with inexpensive N-chlorosuccinimide (NCS) was achieved in MeCN in the presence of 10 mol% of L-proline-functionalized MCM-41-immobilized copper(I) complex [MCM-41-L-proline-CuCl] under mild conditions, yielding a variety of aryl chlorides in excellent yields. This method proved to be tolerant of a broad range of functional groups and particularly
的芳基硼酸与廉价的A高效多相铜催化chlorodeboronation Ñ氯琥珀酰亚胺(NCS)中的溶液在MeCN中的10%(摩尔)的存在下实现的大号脯氨酸官能MCM-41固定化铜(我)络合物[MCM-41 -大号-脯氨酸-CuCl]在温和的条件下,以优异的收率产生各种芳基氯化物。事实证明,该方法可耐受各种官能团,并且特别适用于将缺电子的芳基硼酸转化为芳基氯化物,这种转化在没有铜催化的情况下效率低下。可以通过简单过滤反应溶液来回收这种多相铜催化剂,并循环至少10次而不会降低活性。