Enantioselective Synthesis of Spiropyrazolone-Fused Cyclopenta [c] chromen-4-ones Bearing Five Contiguous Stereocenters via (3+2) Cycloaddition.
DOI Number:
10.1021/acs.joc.1c01215
Reaction Category:
MOP ID:
MOP_0000715
Educt:
substituted 3-(2-oxopropyl)-2H-chromen-2-one, substituted 2,4-dihydro-3H-pyrazol-3-one
Product:
spirocyclic compounds
Catalyst:
N-[3,5-Bis(trifluoromethyl)phenyl]-N′- [(8α,9R)-6′-methoxycinchonan-9-yl]thiourea
Cas No:
852913-22-5
Associated Product from Buchler GmbH:
Quinine Base
Cas No:
130-95-0