作者:Shinichi Motoki、Tadao Sato
DOI:10.1246/bcsj.42.1322
日期:1969.5
acetothiolacetate (I) in the presence of triethylamine. The ester I underwent a thermal condensation to give dehydroacetic acid (III), with the liberation of mercaptan, merely upon heating, and the reaction was effectively promoted in the presence of triethylamine. The ester I reacted with alkyl halide and acyl halide in dioxane to give α-alkyl and α-acylacetothiolacetate (II) respectively. Ethyl acetothiolacetate
在三乙胺的存在下,乙烯酮二聚体与硫醇反应得到乙酰硫代乙酸酯(I)。酯Ⅰ经过热缩合得到脱氢乙酸(Ⅲ),仅在加热时释放出硫醇,并且在三乙胺的存在下有效地促进了反应。酯 I 与卤代烷和酰卤在二恶烷中反应,分别得到 α-烷基和 α-酰基乙酰硫代乙酸酯 (II)。乙酰硫代乙酸乙酯、α-甲基-乙酰硫代乙酸乙酯和α-乙酰基乙酰硫代乙酸乙酯与氧化汞在低温下反应分别生成二乙酰丙酮(VI)、甲乙酮和脱氢乙酸(III)。