Ligand Effects on Negishi Couplings of Alkenyl Halides
作者:Arkady Krasovskiy、Bruce H. Lipshutz
DOI:10.1021/ol2010165
日期:2011.8.5
Negishi couplings at olefinic centers do not always occur with the anticipated maintenance of stereochemistry. The source of erosion has been traced to the ligand, and a modified method has been developed that solves the stereochemical issue and significantly improves yields of Negishi couplings in general.
Stereoselective Negishi-like Couplings Between Alkenyl and Alkyl Halides in Water at Room Temperature
作者:Arkady Krasovskiy、Christophe Duplais、Bruce H. Lipshutz
DOI:10.1021/ol101885t
日期:2010.11.5
Mix in water and then stir. That is all that is required in this new approach to stereoselective sp3−sp2 cross-couplings between an alkyl and alkenyl halide. Prior formation of organozinc reagents is not required.