Enantioselective Nickel-Catalyzed <i>anti</i>-Carbometallative Cyclizations of Alkynyl Electrophiles Enabled by Reversible Alkenylnickel <i>E</i>/<i>Z</i> Isomerization
作者:Christopher Clarke、Celia A. Incerti-Pradillos、Hon Wai Lam
DOI:10.1021/jacs.6b04206
日期:2016.7.6
Nickel-catalyzedadditions of arylboronic acids to alkynes, followed by enantioselective cyclizations of the alkenylnickel species onto tethered ketones or enones, are reported. These reactions are reliant upon the formal anti-carbonickelation of the alkyne, which is postulated to occur by the reversible E/Z isomerization of an alkenylnickel species.