Reaction of alkyne allyl alcohols tethered with N-(p-tolylsulfonamide) in the presence of a cationic gold(I) catalyst gave new cycloisomerization products, 4-oxa-6-azatricyclo[3.3.0.02,8]octanes.
作者:Connor Yap、Gabriel M. J. Lenagh-Snow、Somnath Narayan Karad、William Lewis、Louis J. Diorazio、Hon Wai Lam
DOI:10.1002/anie.201703380
日期:2017.7.3
Enantioselective nickel-catalyzed arylative cyclizations of substrates containing a Z-allylic phosphate tethered to an alkyne are described. These reactions give multisubstituted chiral aza- and carbocycles, and are initiated by the addition of an arylboronic acid to the alkyne, followed by cyclization of the resulting alkenylnickel species onto the allylic phosphate. The reversible E/Z isomerization