Solvent-Driven Mono- and Bis-sulfenylation of (<i>E</i>)-β-Iodovinyl Sulfones with Thiols for Flexible Synthesis of 1,2-Thiosulfonylalkenes and 1,2-Dithioalkenes
作者:Raju Jannapu Reddy、Arram Haritha Kumari、Nunavath Sharadha、Gamidi Rama Krishna
DOI:10.1021/acs.joc.1c02444
日期:2022.3.18
of (E)-β-iodovinyl sulfones with thiols has also been established for the synthesis of both (E)- and (Z)-1,2-thiosulfonylethenes in MeCN and MeOH, respectively. Moreover, K2CO3-mediated desulfonylative-sulfenylation of (Z)-1,2-thiosulfonylethenes with thiols in DMSO furnished unsymmetrical (Z)-1,2-dithio-1-alkenes for the first time. The solvent-dependent versatile reactivity of (E)-β-iodovinyl sulfones
溶剂的性质是 ( E )-β-碘乙烯基砜在碱性条件下与硫醇进行立体选择性单硫醇化和双硫醇化的关键因素。提出了一种在室温下在K 2 CO 3 /DMSO 的影响下将 ( E )-β-碘乙烯基砜与硫醇进行新型且前所未有的邻位双硫醇化反应,以快速组装 ( E )-1,2-dithio-1-alkenes。溶剂诱导的 ( E )-β-碘乙烯基砜与硫醇的立体选择性单磺酰化也已被建立,用于分别在 MeCN 和 MeOH 中合成 ( E )-和 ( Z )-1,2-硫代磺酰基乙烯。此外,K 2 CO 3介导的 ( Z )-1,2-硫代磺酰基乙烯在 DMSO 中与硫醇的脱磺酰化-亚磺酰化反应首次提供了不对称的 ( Z )-1,2-dithio-1-alkenes。( E )-β-碘乙烯基砜的溶剂依赖性多功能反应性已被成功探索,以提供一组 ( E )-/( Z )-1,2-dithio-1-alkenes 和