2,3-di-tert-butyl 1-methyl (1E,3E)-1-(benzoylamino)-4-(dimethylamino)buta-1,3-diene-1,2,3-tricarboxylate 、 6-hydrazinotetrazolo[1,5-b]pyridazine hydrochloride 以
甲醇 为溶剂,
反应 6.0h,
以86%的产率得到di-tert-butyl 5-benzamido-6-oxo-1-(tetrazolo[1,5-b]pyridazin-6-ylamino)-1,6-dihydropyridine-3,4-dicarboxylate