C6′ steric bulk of cinchona alkaloid enables an enantioselective Michael addition/annulation sequence toward pyranopyrazoles.
DOI Number:
10.1039/C8CC00154E
Reaction Category:
Educt:
enynones, pyrazolones
Product:
pyranopyrazolones
Catalyst:
(8α,9R)-6′-[[Tris(1-methylethyl)silyl]oxy]cinchonan-9-ol
Cas No:
876269-53-3
Associated Product from Buchler GmbH:
Cupreine Base
Cas No:
524-63-0