反应详情

By the condensation of 1-chloro-6-methoxy-4-methyl-9-thioxanthenone with 2-(diethylamino)ethylhydrazine was obtained 2-(2-(diethylamino)ethyl)-8-methoxy-5-methyl-2H(1)benzothiopyrano[4,3,2-cd]indazole. To 0.18g. of this base in acetone (3 ml.) was added 30% aqueous hydrogen peroxide (0.22 ml.). After standing at room temperature for 90 hours the solution was evaporated under reduced pressure. The solid residue gave crystals m.p. 132° - 133° (decomp.) from acetone which consisted of 2-(2-(diethylamino)ethyl)-8-methoxy-5-methyl-2H(1)benzothiopyrano[4,3,2-cd]indazole N-oxide 1.75 hydrate.