Asymmetric sequential annulation/aldol process of 4-isothiocyanato pyrazolones and allenones: access to novel spiro [pyrrole–pyrazolones] and spiro [thiopyranopyrrole–pyrazolones].
DOI Number:
10.1039/D0CC07113G
Reaction Category:
Educt:
4-isothiocyanato pyrazolones, allenones
Product:
spiro [pyrrole–pyrazolones]
Catalyst:
N-[3,5-Bis(trifluoromethyl)phenyl]-N′-[(8α,9S)-6′-methoxycinchonan-9-yl]thiourea
Cas No:
852913-16-7
Associated Product from Buchler GmbH:
N-[3,5-Bis(trifluoromethyl)phenyl]-N′-[(8α,9S)-6′-methoxycinchonan-9-yl]thiourea
Cas No:
852913-16-7