Enantioselective Synthesis of Unsymmetrical Diaryl‐Substituted Spirocyclohexanonepyrazolones through a Cascade [4+2] Double Michael Addition.

DOI Number:

10.1002/adsc.201200925

Reaction Category:

RXNO ID:

RXNO_0000009

Educt:

substituted 4-methylene-2,4-dihydro-3H-pyrazol-3-one, α,β-unsaturated ketones

Product:

Spirocyclohexanonepyrazolones

Catalyst:

2-fluorobenzoic acid, (9R)-6′-methoxy-cinchonan-9-amine

Cas No:

287979-82-2

Cas No:

56-54-2