A highly efficient sulfonylation of thiols has been achieved through the metal-free NaI/TBHP-mediated cross-coupling of sulfonyl hydrazides and thiols at roomtemperature. This method provides a convenient and practical route to thiosulfonates in 84–99% yields (39 examples) with wide functional group compatibility.
Electrochemical cross-coupling reactions of sodium arenesulfinates with thiophenols and phenols
作者:Zijian Zhong、Pan Xu、Jinfeng Ma、Aihua Zhou
DOI:10.1016/j.tet.2021.132444
日期:2021.10
and sulfonate esters using sodium arenesulfinates and thiophenols/phenols is disclosed. The protocol involves using inorganic and non-toxic NaI as both redox catalyst and supporting electrolyte at room temperature without oxidant and base. The reactions provide good yields of products and tolerate broad substrate scope. The mechanistic studies revealed that the reactions proceed via a radical pathway
公开了使用芳烃亚磺酸钠和苯硫酚/苯酚生成硫代磺酸盐和磺酸酯的绿色电化学氧化交叉偶联方案。该协议涉及在室温下使用无机和无毒 NaI 作为氧化还原催化剂和支持电解质,无需氧化剂和碱。该反应提供了良好的产物收率并耐受广泛的底物范围。机理研究表明,反应通过形成 SO 2 -S 和 SO 2 -O 键的自由基途径进行。
Visible-Light-Triggered Sulfonylation/Aryl Migration/Desulfonylation and C–S/Se Bond Formation Reaction: 1,2,4-Trifunctionalization of Butenyl Benzothiazole Sulfone with Thiosulfonate/Selenosulfonates
作者:Xin-Yu Liu、Shi-Yin Tian、Yi-Fan Jiang、Weidong Rao、Shun-Yi Wang
DOI:10.1021/acs.orglett.1c02981
日期:2021.11.5
A visible-light-triggered radical cascade sulfonylation/aryl migration/desulfonylation and C–S/Se bond formation reaction of butenyl benzothiazole sulfone with thiosulfonates or selenosulfonates is developed. This study affords the 1,2,4-trifunctionalization of butenyl benzothiazole sulfone derivatives under mild conditions.