A new strategy for the aza-Michael reaction of amides and ureas with α,β-unsaturated enones, which uses p-TsOH·H2O as an efficient and inexpensive catalyst under high-pressure conditions, has been developed.
Catalyst Control over Regio- and Enantioselectivity in Baeyer–Villiger Oxidations of Functionalized Ketones
作者:David K. Romney、Sean M. Colvin、Scott J. Miller
DOI:10.1021/ja508757g
日期:2014.10.8
We report a peptide-based catalyst that can strongly influence the regio- and enantioselectivity of the Baeyer–Villiger (BV) oxidation of cyclic ketones bearing amide, urea, or sulfonamide functional groups. Both types of selectivity are thought to arise from a catalyst–substrate hydrogen-bonding interaction. Furthermore, in selected cases, the reactions exhibit the hallmarks of parallel kinetic resolution