N-ethyl-5,6-dihydro-11-oxodibenzazepine-3-acetic acid 、 Sulfuric acid methanol 以to afford methyl 5,6-dihydro-5-methyl-11-oxodibenz[b,e]azepine-3-acetate having a melting point of 88.4°-90.5° C.的产率得到(5-methyl-11-oxo-6,11-dihydro-5
H-dibenzo[
b,
e]azepin-3-yl)-acetic acid methyl ester