反应详情

Following a procedure similar to that described in Preparation 42(ii), but brominating 6.6 g of diethyl 2-methyl-1-(4-nitrobenzyl)imidazole-4,5-dicarboxylate [prepared as described in step (i) above] with 3.9 g of N-bromosuccinimide, 5.75 g of the title compound were obtained as a syrup.