The development of a copper-catalyzed cross-coupling betweenprimary and secondary (pseudo)halides and bicyclopentyl Grignard reagents is reported. Highly strained bicyclopentanes can be cross-coupled with a large panel of primaryalkyl mesylates and secondary alkyl iodides. The catalytic system is simple and cheap, and the reaction is general and chemoselective.
A General Method to Access Sterically Encumbered Geminal Bis(boronates) via Formal Umpolung Transformation of Terminal Diboron Compounds
作者:Peng‐Fei Ning、Yi Wei、Xin‐Yi Chen、Yi‐Fei Yang、Feng‐Chen Gao、Kai Hong
DOI:10.1002/anie.202315232
日期:2024.1.22
method for accessing sterically encumbered geminal bis(boronates) was developed based on a formal umpolung strategy. The polarity inversion of the readily available 1,1-diborylalkanes allows their corresponding α-halogenated derivatives to undergo a formal substitution with a wide variety of nucleophiles to form C−C, C−O, C−S, and C−N bonds, featuring excellent tolerance to steric hindrance and functional