丁炔二酸二甲酯 、
(Z)-ethoxy-[4-(4-methylpyridin-1-ium-1-yl)-3-phenyl-5-sulfanylidenethiophen-2-ylidene]methanolate 以
四氢呋喃 为溶剂,
反应 10.0h,
以38%的产率得到5-O-ethyl 9-O,10-O-dimethyl 13-methyl-4-phenyl-6,8-dithia-2-azatetracyclo[7.5.0.02,12.03,7]tetradeca-3(7),4,10,13-tetraene-5,9,10-tricarboxylate