ethyl 5-[(dimethylamino)methylidene]-1-(4-methoxybenzyl)-3-methyl-4-oxo-1,4,5,7-tetrahydrothiopyrano[3,4-b]pyrrole-2-carboxylate 、
苯磺酰乙腈 以
乙醇 为溶剂,
反应 24.0h,
以42%的产率得到ethyl 7-(4-methoxybenzyl)-9-methyl-2-oxo-3-(phenylsulfonyl)-1,2,6,7-tetrahydropyrrolo[3',2':4,5]thiopyrano[3,2-b]pyridine-8-carboxylate