8-Chloro-10,11-dihydrodibenz[b,f][1,4]oxazepine-10-carboxylic acid hydrazine 、
马来酸酐 在
ethyl acetate benzene 、 2-Cyclohexylethanol;ethyl acetate 作用下,
以
Benzene methylene chloride 为溶剂,
反应 24.0h,
以yields 1-(3-carboxypropenoyl)-2-(8-chloro-10,11-dihydrodibenz[b,f]-[1,4]oxazepine-10-carbonyl)hydrazine, melting at about 171°- 172°的产率得到3-[
N'-(8-chloro-11
H-dibenzo[
b,
f][1,4]oxazepine-10-carbonyl)-hydrazinocarbonyl]-acrylic acid