Synthesis of (E)-iodo vinylsulfones via oxidative addition of thiol into alkyne under metal free condition
作者:Surya Kanta Samanta、Rumpa Sarkar、Mrinal K. Bera
DOI:10.1016/j.tet.2021.132310
日期:2021.8
of (E)-β-iodovinyl sulfone derivatives via oxidative C–S coupling of thiol and alkyne has been demonstrated. Both aryl and alkyl terminal acetylenes were found to be an excellent substrate for the present reaction which provides a wide range of β-iodovinyl sulfone derivatives with very good yield and excellent regio and stereo-selectivities. Diaryldisulfide is also found to be an equally efficient sulfonyl
已经证明了一种有效的、无过渡金属和分子碘促进的方案,用于通过硫醇和炔烃的氧化 C-S 偶联构建 ( E )-β-碘乙烯基砜衍生物。发现芳基和烷基末端乙炔都是本反应的极好底物,该反应提供了范围广泛的 β-碘乙烯基砜衍生物,具有非常好的产率和出色的区域和立体选择性。还发现二芳基二硫化物在相同反应条件下是同样有效的磺酰基替代物。
Direct difunctionalization of alkynes with sulfinic acids and molecular iodine: a simple and convenient approach to (E)-β-iodovinyl sulfones
作者:Wei Wei、Jiangwei Wen、Daoshan Yang、Huijun Jing、Jinmao You、Hua Wang
DOI:10.1039/c4ra13998d
日期:——
A simple and convenientapproach for the construction of β-iodovinyl sulfones has been developed via direct difunctionalization of alkynes with sulfinic acids and molecular iodine. The present reaction provides a highly efficient approach to a diverse range of substituted (E)-β-iodovinyl sulfones in moderate to good yields with excellent stereo- and regio-selectivities but no need for any metal catalyst
Stereoselective Synthesis of Difunctionalized 1,3-Dienes Containing Tin and Sulfonyl Groups by Palladium-Catalyzed Regio- and Stereocontrolled Addition Reactions
作者:Hong Zhao、Weisen Yang、Shiyun Xie、Mingzhong Cai
DOI:10.1002/ejoc.201101153
日期:2012.2
Using palladium-catalyzed addition reactions, a terminal alkyne, an acetylenic sulfone, and a tin hydride comprise the building blocks for the construction of difunctionalized 1,3-dienes containing tin and sulfonyl groups in an atom-economical fashion. Terminal alkynes 1 undergo clean cis addition to acetylenic sulfones 2 in the presence of catalytic amounts of palladium acetate and tri(2,6-dimethoxyphenyl)phosphane