反应详情

Methyl 10-bromo-6,7-dihydro-5H-5,7-methanobenzo[c]imidazo[1,2-a]azepine-2-carboxylate (4 g) was reacted with ethyl formate similarly to as described in example 8 with non-critical modifications to afford 3.2 g (74%) of methyl 10-bromo-3-formyl-6,7-dihydro-5H-5,7-methanobenzo[c]imidazo[1,2-a]azepine-2-carboxylate as a yellow solid.