Kohler, Mark C.; Yost, Julianne M.; Garnsey, Michelle R.; Coltart, Dr Don
(AMER CHEMICAL SOC, 2010)
An asymmetric Mannich reaction of phenylacetate thioesters and sulfonylimines using cinchona alkaloid-based amino (thio)urea catalysts is reported that employs proximity-assisted soft enolization. This approach to enolization ...