α-<2-<<(3,4-dimethoxyphenyl)methyl>amino>-5,6-dihydro-3-(ethoxycarbonyl)-7-oxo-5H-1-pyridin-6-yl>-α-<2-<<(3,4-dimethoxyphenyl)methyl>amino>-3-(ethoxycarbonyl)-8-oxo-5,6,7,8-tetrahydroquinolin-7-yl>acetic acid ethyl ester 在
ammonium acetate 、
溶剂黄146 作用下,
反应 3.0h,
以28%的产率得到2,11-bis<<(3,4-dimethoxyphenyl)methyl>amino>-6,8-dihydro-5H-pyrido<3',2':5,6>cyclohexa<1,2-b>pyrido<2',3':3,4>cyclopenta<1,2-e>pyridine-3,7,10-tricarboxylic acid triethyl ester