Consecutive borylcupration/C–C coupling of γ-alkenyl aldehydes towards diastereoselective 2-(borylmethyl)cycloalkanols
作者:Ricardo J. Maza、Jordi Royes、Jorge J. Carbó、Elena Fernández
DOI:10.1039/d0cc02263b
日期:——
Copper(I) catalyzes the borylativecyclization of γ-alkenyl aldehydes through chemo- and regioselective addition of Cu–B to CC and concomitant intramolecular 1,2-addition of Cu–C on CO. The products are formed in an exclusive diastereoselective manner and computational analysis identifies the key points for the observed chemo- and diastereoselectivity.
nickel‐catalyzed α‐allylation of aldehydes with allyl alcohol is reported. The reaction is promoted by 1 mol % of in situ formed nickel complex in methanol, and water is the sole by‐product of the reaction. The experimental conditions allow the conversion of various α‐branched aldehydes and α,β‐unsaturated aldehydes as nucleophiles. The same catalyst and reaction conditions enabled a tandem aldol condensation