The influence of substituents on preparation and tautomerism of open-chain β-thioketoesters
作者:F. Duus
DOI:10.1016/0040-4020(72)88125-0
日期:1972.1
the synthesis of β-thioketoesters, the acid catalysed reactions of 36 differently substituted β-keto esters with H2S have been studied under various conditions in order to determine the influence of the substituents on reaction course. gem-Dithiols may also be obtained in good yields by this reaction. Treatment of T1(I)-salts of β-thioketo esters with alkyl halides results exclusively in S-alkylation
特别是关于β-硫代酮酸酯的合成,已经在各种条件下研究了36种不同取代的β-酮酸酯与H 2 S的酸催化反应,以确定取代基对反应过程的影响。通过该反应也可以高收率获得宝石-二硫醇。用烷基卤化物处理β-硫代酮酸酯的T1(I)-盐仅导致S-烷基化。证明了通过绕CC双键旋转,S-烷基化的α,β-不饱和β-巯基酯的缓慢的顺反异构体。硫代乙硫代乙酸乙酯是通过硫代乙酸乙酯的自缩合制备的。