Synthesis of Spiro [chroman/tetrahydrothiophene‐3,3′‐oxindole] Scaffolds via Heteroatom‐Michael–Michael Reactions: Easily Controlled Enantioselectivity via Bifunctional Catalysts.
DOI Number:
10.1002/adsc.201300833
Reaction Category:
Educt:
substituted oxindoles, methyl (E)-4-mercaptobut-2-enoate
Product:
substituted spirooxindoles
Catalyst:
N-[3,5-Bis(trifluoromethyl)phenyl]-N′-[(8α,9S)-6′-methoxycinchonan-9-yl]thiourea
Cas No:
852913-16-7
Associated Product from Buchler GmbH:
Quinine Base
Cas No:
130-95-0