CJCU
Synthesis of Ethyl Esters of γ-[N1-Substituted-1,4,5,6-tetrahydro(or 1,6-dihydro)-6-oxo-3-pyridazinamide]butyric Acid
XU Feng-Rong, WANG Shu-Yu, XU Ping, LI Hui, HU Chang-Feng, OUYANG Li
Chem. J. Chinese Universities . 1995, (8): 1254 -1256 .