1,1'-Biphenyl, mixt. with 1,1'-oxybis(benzene) → HCID 20040895, compound

Participants

Reaction Steps

Ethyl 3-(3-methyl-2-phenylpyrazol-4-ylamino)crotonate (0.200 g) was added to boiling Dowtherm A (5 ml) under nitrogen. The mixture was heated under reflux for 30 mins and then allowed to cool. Petroleum ether (60°-80° C.) was added to the cooled Dowtherm solution and the required pyrazolopyridone precipitated out. The title compound (0.120 g) was filtered off and washed thoroughly with hot petroleum ether.

Provenance & Evidence