Isolation of Dithiolanylium Salts and Their Conversion to Ketene Dithioacetals and Ortho Esters
作者:Tadashi Okuyama、Wataru Fujiwara、Takayuki Fueno
DOI:10.1246/bcsj.59.453
日期:1986.2
prepared by the reaction of 1,2-ethanedithiol with acyl chlorides in the presence of perchloric acid. Treatments of 1 with triethylamine gave 2-alkylidene-1,3-dithiolane (2) when the 2-substituent was a primary or secondary alkyl group. 2-Aryl derivatives of 1 were converted to ortho esters by the reaction with methanol in the presence of silver nitrate. 1,3-Dithian-2-ylium perchlorates and 2-alkylidene-1
在高氯酸的存在下,通过 1,2-乙二硫醇与酰氯的反应制备了各种 2-取代的 1,3-二硫戊环-2-鎓高氯酸盐 (1)。当 2-取代基是伯或仲烷基时,用三乙胺处理 1 得到 2-亚烷基-1,3-二硫戊环 (2)。1 的 2-芳基衍生物通过在硝酸银存在下与甲醇反应转化为原酸酯。1,3-Dithian-2-ylium 高氯酸盐和 2-alkylidene-1,3-dithianes 也类似地从 1,3-丙二硫醇制备。