Vinylogous Michael Addition, 3-alkylidene oxindoles, nitroolefins, tert-butyl (R,Z)-3-(5-nitro-4-phenylpentan-2-ylidene)-2-oxoindoline-1-carboxylate, N-[3,5-bis(trifluoromethyl)phenyl]-N′- [(8α,9S)-10,11-dihydro-6′-methoxy- cinchonan-9-yl]-Thiourea, Dihydroquinine Derivative

Bifunctional Cinchona Alkaloid/Thiourea Catalyzes Direct and Enantioselective Vinylogous Michael Addition of 3-Alkylidene Oxindoles to Nitroolefins.

10.1002/anie.201202027

3-alkylidene oxindoles, nitroolefins

tert-butyl (R,Z)-3-(5-nitro-4-phenylpentan-2-ylidene)-2-oxoindoline-1-carboxylate

N-[3,5-bis(trifluoromethyl)phenyl]-N′- [(8α,9S)-10,11-dihydro-6′-methoxy- cinchonan-9-yl]-Thiourea

852913-19-0

Dihydroquinine Base

522-66-7