反应详情

Following the same procedure, 19.9 g of methyl 4-amino-2,2-dimethyl-2,3-dihydro-7-benzofurancarboxylate was transformed into 20.1 g of 4-amino-5-chloro-2, 2-dimethyl-2,3-dihydro-7-benzofurancarboxylic acid, m.p. 176°-178° C.