Lewis base catalyzed regioselective cyclization of allene ketones or α-methyl allene ketones with unsaturated pyrazolones.
DOI Number:
10.1039/C9OB00179D
Reaction Category:
MOP ID:
MOP_0000565
Educt:
5-phenylpenta-3,4-dien-2-one, (E)-4-benzylidene-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one
Product:
(S)-1-(6-benzyl-3-methyl-1,4-diphenyl-1,4-dihydropyrano[2,3-c]pyrazol-5-yl)ethan-1-one
Catalyst:
Quinine Base
Cas No:
130-95-0
Associated Product from Buchler GmbH:
Quinine Base
Cas No:
130-95-0