Cobalt-Catalyzed
Enantioselective Intramolecular Hydroacylation
of Ketones and Olefins
- Publication date
- 2014
- Publisher
Abstract
Cobalt–chiral
diphoshine catalytic systems promote intramolecular
hydroacylation reactions of 2-acylbenzaldehydes and 2-alkenylbenzaldehydes
to afford phthalide and indanone derivatives, respectively, in moderate
to good yields with high enantioselectivities. The ketone hydroacylation
did not exhibit a significant H/D kinetic isotope effect (KIE) with
respect to the aldehyde C–H bond, indicating that C–H
activation would not be involved in the rate-limiting step