Ethyl 15-methyl-9-oxa-14-azatricyclo[8.5.2.013,16]heptadeca-1(15),10(17),11,13(16)-tetraen-6-yne-14-carboxylate 以
5,5-dimethyl-1,3-cyclohexadiene 为溶剂,
反应 1.0h,
以99%的产率得到ethyl 13-methyl-4,5,6,7-tetrahydro-2H-9,8-(epiminometheno)cycloocta[de]chromene-12-carboxylate