Copper(I)-Catalyzed Regioselective Monoborylation of 1,3-Enynes with an Internal Triple Bond: Selective Synthesis of 1,3-Dienylboronates and 3-Alkynylboronates

摘要

Organoboron compounds are useful reagents and the hydro-boration of simple alkenes or alkynes is one of the most efficient and straightforward methods to access a variety of organoboron compounds. However, for the preparation of poly conjugated hydrocarbon compounds, there are limited types of regio- and stereoselective hydroboration reactions. This type of transformation is still challenging in both transition-metal-catalyzed and noncatalyzed hydroboration.