Ammonia → HCID 59592787, compound

Participants

Reaction Steps

In analogy to GP3, 1.06 g of 1-methyl-6-(4-methyl-piperazin-1-ylmethyl)-4-(4-nitrophenyl)-1H-pyrazolo[3,4-b]pyridine (Intermediate 17.8; 2.89 mmol, 1 eq.) were dissolved in 15 mL EtOH, treated with 3.26 g SnCl2.2H2O (14.46 mmol, 5 eq.) and stirred at reflux for 2 h. The reaction was poured into conc. NH3, partitioned between CH2Cl2 and water, the aqueous layer was re-extracted, the combined organic layers were dried and concentrated in vacuo to yield 663 mg of the crude aniline (1.97 mmol, 68% yield).

Provenance & Evidence