Asymmetric Formal (3+2) Cyclocondensation of Coumarin-3-Formylpyrazoles as 3-Carbon Partners with 3-Hydroxyoxindoles via Esterification/Michael Addition Sequence.
DOI Number:
10.1021/acs.joc.2c01757
Reaction Category:
Educt:
coumarin-3-formylpyrazoles, 3-hydroxyoxindoles
Product:
spiro compounds
Catalyst:
3-[[(8α,9S)-6′-methoxycinchonan-9-yl]amino]-4-(phenylamino)-3-cyclobutene-1,2-dione
Cas No:
1528740-10-4
Associated Product from Buchler GmbH:
Quinine Base
Cas No:
130-95-0