Recent Advances about Protoboration of Conjugated Dienes

Abstract

The protoboration of conjugated diene is a kind of important strategy for the synthesis of allylic borides and homo-allylic borides, because of mild reaction conditions and wide functional group compatibility. Till now, several research groups have been reported key progress in this field, some of them could well control the chemical selectivity, regioselectivity and enantioselectivity of these transformations. In addition, some efficient tandem reactions which based on highly efficient protoboronation have been designed. These methods could be used for the synthesizing bioactive molecules via novel route. Furthermore, recently, the protoboronation of conjugated diene without transition metal catalyst has been realized. The research progress about protoboration of conjugated diene is summarized, the range of substrate scope is introduced, and the reaction mechanism for each reaction is discussed.