Microwave-promoted regio- and stereoselective vinylation of heterocyclic thiols
作者:Nimmakuri Rajesh、Rupam Sarma、Dipak Prajapati
DOI:10.1039/c3ra47417h
日期:——
The first stereoselective vinylation of heterocyclic thiols has been reported. Heterocyclic thiols are shown to react efficiently with activated terminal alkynes in an anti-Markovnikov fashion in absence of any catalyst or additive under microwave irradiation to give Z-selective vinyl sulfides.
首次报道了杂环硫醇的立体选择性乙烯基化反应。研究表明,在没有任何催化剂或添加剂的情况下,杂环硫醇可在微波辐照下与活化的末端炔以反马尔科夫尼科夫方式高效反应,生成 Z 选择性乙烯基硫化物。
Regio- and Stereoselective Synthesis of Functionalized Vinyl Sulfides Based on Pyridine-2-thiol and Propynoic Acid and Its Derivatives
作者:V. A. Potapov、R. S. Ishigeev、M. V. Musalov、S. V. Zinchenko、Yu. A. Chuvashev、T. N. Borodina、S. V. Amosova
DOI:10.1134/s1070428018120102
日期:2018.12
Regio- and stereoselective methods of synthesis of 3-(pyridin-2-ylsulfanyl)prop-2-enoic acid and alkyl (Z)-3-(pyridin-2-ylsulfanyl)prop-2-enoates have been developed on the basis of nucleophilic addition of pyridine-2-thiol to propynoic acid and alkyl propynoates. Reactions of alkyl (Z)-3-(pyridin-2-ylsulfanyl)prop-2- enoates with methyl iodide afforded 2-[(3-alkoxy-3-oxoprop-1-enyl)sulfanyl]-1-methylpyridinium