diethyl 2-chloro-11-fluoro-12,12a-dihydro-6H-pyrido[2',3':5,6][1,3]oxazino[3,4-a]indole-6,6-dicarboxylate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
甲苯 为溶剂,
以98%的产率得到Diethyl 4-chloro-15-fluoro-8-oxa-3,10-diazatetracyclo[8.7.0.02,7.011,16]heptadeca-1(17),2(7),3,5,11(16),12,14-heptaene-9,9-dicarboxylate