5,6,7,8-tetrahydro-4-[4-chlorobenzylidene-hydrazino]pyrido[4',3':4,5]thieno[2,3-d]pyrimidine-7-carboxylic acid ethyl ester 在
氯化亚砜 作用下,
反应 2.0h,
以81%的产率得到Ethyl 5-(4-chlorophenyl)-10-thia-3,4,6,8,13-pentazatetracyclo[7.7.0.02,6.011,16]hexadeca-1(9),2,4,7,11(16)-pentaene-13-carboxylate