Sodium Hydroxide → HCID 178517606, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-chloro-2-(2-chlorophenyl)-3-(4-chlorophenyl)-2H-pyrazolo[3,4-c]pyridine (I-9A-1a, 420 mg, 1.12 mmol) in THF (12 ml) and 3M aqueous HCl (7.5 ml) was stirred overnight at 60° C. The reaction mixture was cooled, adjusted to pH=7.5 with 5M aqueous NaOH, and extracted into ethyl acetate. The combined organic layers were dried (Na2SO4), concentrated under reduced pressure, and then repulped from 40% ethyl acetate in isopropyl ether to give the desired product (I-9A-1a) as a colorless solid (320 mg, 80%): +ES MS (M+1) 356.3; 1H NMR (400 MHz, CD2Cl2): δ 9.64 (br s, 1H), 7.55–7.41 (m, 4H), 7.36–7.32 (m, 2H), 7.23–7.19 (m, 2H), 6.96 (dd, J=7.5, 5.8 Hz, 1H), 6.50 (d, J=7.5 Hz, 1H).

Provenance & Evidence