HCID 178499500, compound → HCID 178510264, compound

Participants

Reaction Steps

4-(2-Chlorophenyl)-5-cyano-6-dimethoxymethyl-4,7-dihydro-2H-pyrazolo[3,4-b]pyridine (4.4 g) was added to trifluoroacetic acid (20 ml) under ice-cooling and the mixture was stirred at room temperature for 2.5 hours. The reaction mixture was concentrated under reduced pressure and crystallized from ethyl acetate (50 ml) to give the title compound (1.9 g) as yellow crystals.

Provenance & Evidence