Construction of pyrazole fused spiroketals by a (3+2) annulation reaction.

DOI Number:

10.1039/d2qo01001a

Reaction Category:

Educt:

4-bromo-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, N-((E)-2-((Z)-4-methoxybenzylidene)benzofuran-3(2H)-ylidene)-4-methylbenzenesulfonamide

Product:

N-((2R,4'R,E)-4'-(4-methoxyphenyl)-3'-methyl-1'-phenyl-1',4'-dihydro-3H-spiro[benzofuran-2,5'-furo[2,3-c]pyrazol]-3-ylidene)-4-methylbenzenesulfonamide

Catalyst:

3-[[3,5-bis(trifluoromethyl)phenyl]amino]-4-[[(8α,9S)-6′-methoxycinchonan-9-yl]amino]-3-Cyclobutene-1,2-dione

Cas No:

1256245-84-7

Cas No:

130-95-0