5,7-dioxo-5,7-dihydro-dibenzo[a,c]cycloheptene-6,6-dicarboxylic acid diethyl ester 、
2,4-二硝基苯肼 生成 5-(2,4-dinitro-phenylhydrazono)-7-oxo-5,7-dihydro-dibenzo[
a,
c]cycloheptene-6,6-dicarboxylic acid diethyl ester 、 5,7-bis-(2,4-dinitro-phenylhydrazono)-5,7-dihydro-dibenzo[
a,
c]cycloheptene-6,6-dicarboxylic acid diethyl ester