3-chloro-5-ethoxy-1
H-pyridazine-4-thione 以
乙醇 为溶剂,
反应 3.0h,
生成 4,9-diethoxy-[1,4]dithiino[2,3-
c;5,6-
c']dipyridazine 、
4,6-diethoxy-[1,4]dithiino[2,3-c;6,5-c']dipyridazine 、 1
H,9
H-[1,4]dithiino[2,3-
c;6,5-
c']dipyridazine-4,6-dione 、 1
H,6
H-[1,4]dithiino[2,3-
c;5,6-
c']dipyridazine-4,9-dione