Highly Enantioselective Synthesis of Spiro [cyclohexanone‐oxindoles] and Spiro [cyclohexanone‐pyrazolones] by Asymmetric Cascade [5+1] Double Michael Reactions.
DOI Number:
10.1002/ejoc.201101529
Reaction Category:
Educt:
substituted divinyl ketone, substituted indolin-2-one
Product:
spiro [cyclohexanone‐oxindoles]
Catalyst:
N-tert-Butoxycarbonyl-D-phenylglycine, (8α,9S)-6′-Methoxycinchonan-9-amine
Cas No:
168960-95-0
Associated Product from Buchler GmbH:
Quinine Base
Cas No:
130-95-0