Synthesis of Thioesters by Simultaneous Activation of Carboxylic Acids and Alcohols Using PPh<sub>3</sub>/NBS with Benzyltriethylammonium Tetrathiomolybdate as the Sulfur Transfer Reagent
作者:Purushothaman Gopinath、Ravindran Sasitha Vidyarini、Srinivasan Chandrasekaran
DOI:10.1002/ejoc.200900956
日期:2009.12
A new and simple route for the synthesis of thioesters starting from carboxylic acids and alcohols is reported by using tetrathiomolybdate as the key sulfur transfer reagent. Triphenylphosphane and N-bromosuccinimide were used for the activation of the carboxylic acid and alcohol in the same pot followed by the transfer of sulfur from tetrathiomolybdate. Thioesters were obtained in good to moderate
通过使用四硫代钼酸盐作为关键的硫转移试剂,报道了一种以羧酸和醇为原料合成硫酯的新的简单途径。三苯基膦和 N-溴代琥珀酰亚胺用于在同一锅中活化羧酸和醇,然后从四硫代钼酸盐中转移硫。以良好至中等的产率获得硫酯。伯醇显示出极好的反应性并给出相应硫酯的良好产率,而仲醇给出适中的产率,而叔醇的反应性非常低并且相应硫酯的产率很低。