mercaptoacetate in the presence of triethylamine results in the formation of 1,2-dihydrothieno[2,3-c]chromen-4-ones and diethyl 3,4-dithiadipate in high yields. Oxidation of the first compounds with nitrogen dioxide gave 1,2-dihydrothieno[2,3-c]chromen-3,4-diones which were converted into thieno[2,3-c]chromen-4-ones.
在
三乙胺的存在下,2-三
氟甲基
色酮与
巯基乙酸乙酯的氧化还原反应可高产率地形成1,2-二氢
噻吩并[2,3 - c ]
铬-4-酮和3,4-二
硫代二
乙酯二
乙酯。用
二氧化氮氧化第一化合物,得到1,2-二氢
噻吩并[2,3- c ] chromen-3,4-二酮,将其转化为
噻吩并[2,3 - c ] chromen-4-ones。