Iodocyclization of S–(homo)propargyl dithiocarbamates: Regiospecific synthesis of 2-imino(iminium)-1, 3-dithiolanes/dithianes/dithiepanes
作者:Farinaz Soleymani、Azim Ziyaei Halimehjani、Farzane Jafari Asar、Gregory R.J. Thatcher
DOI:10.1016/j.tetlet.2023.154702
日期:2023.9
simple and regiospecific protocol for the synthesis of iodine-containing 2-imino(iminium)1,3- dithiolanes/dithianes/dithiepanes is reported via iodocyclization of corresponding S-(homo)propargyl dihtiocarbamates with molecular iodine. The reactions are regiospecific and only the exo-dig cyclization products were observed in all the cases. In addition, mild reaction conditions, high yields, easy purification
通过用分子碘对相应的S- (高)炔丙基二硫代氨基甲酸酯进行碘环化,报道了一种有效、简单和区域特异性的合成含碘2-亚氨基(亚胺)1,3-二硫杂环己烷/二噻烷/二硫杂环己烷的方案。该反应是区域特异性的并且在所有情况下仅观察到exo -dig环化产物。此外,反应条件温和、产率高、易于纯化和使用廉价的试剂是该方案的主要优点。