反应详情

As described for example 21c) 9-bromo-2-methyl-6H-[1,2,4]triazolo[1,5-c]quinazolin-5-one (28.5 g, 102 mmol), instead of 9-bromo-6H-[1,2,4]triazolo[1,5-c]quinazolin-5-one, was converted to the title compound (25.5 g, 99%) which was obtained as an off-white solid. MS: m/e=251.0/253.1 [M−H]−.