反应详情

To 70.0 mg (0.258 mmol) of tert-butyl 8-methyl-5,8-dihydropyrido[3,4-c]pyridazine-7(6H)-carboxylate (Step F) was added 2 mL of trifluoroacetic acid. The reaction was stirred at ambient temperature for 1 h and concentrated to afford the title compound. LC/MS: 150 (M+1).

1. concentrationconcentrated