One‐Pot Organocatalytic Michael Addition/I2‐Mediated Cyclization Sequence: Metal‐Free Synthesis of Spiropyrazolones from 1,3‐Diketones and Unsaturated Pyrazolones.
DOI Number:
10.1002/ejoc.201700474
Reaction Category:
RXNO ID:
RXNO_0000009
Educt:
unsaturated pyrazolones, 1,3‐diketones
Product:
spiropyrazolones
Catalyst:
3-[(9R)-cinchonan-9-ylamino]-4-[(phenylmethyl)amino]-3-cyclobutene-1,2-dione
Cas No:
1253115-30-8
Associated Product from Buchler GmbH:
Cinchonine Base
Cas No:
118-10-5