Asymmetric [3+2] spiroannulation of pyrazolone-derived Morita–Baylis–Hillman carbonates with alkynyl ketones: facile access to spiro [cyclopentadiene-pyrazolone] scaffolds.
DOI Number:
10.1039/D2CC02963D
Reaction Category:
Educt:
pyrazolones, Ynones
Product:
substituted (R)-8-formyl-4-oxo-2,3-diazaspiro[4.4]nona-1,6,8-triene-6-carboxylate
Catalyst:
(3α,9S)-3,9-epoxy-10,11-dihydro-cinchonan-6′-ol
Cas No:
253430-48-7
Associated Product from Buchler GmbH:
Dihydrocupreidine Base
Cas No:
73522-75-5