Copper-Catalyzed TBHP-Mediated Radical Cross-Coupling Reaction of Sulfonylhydrazides with Thiols Leading to Thiosulfonates
作者:Guo-Yu Zhang、Shuai-Shuai Lv、Adedamola Shoberu、Jian-Ping Zou
DOI:10.1021/acs.joc.7b01121
日期:2017.9.15
A tert-butyl hydroperoxide (TBHP)-mediated coupling of sulfonylhydrazides with thiols catalyzed by CuBr2 to afford thiosulfonates via a radical process is described.
A green and practical protocol between sulfonyl hydrazides and disulfides is herein reported for the synthesis of unsymmetrical thiosulfonates with the assistance of H2O2 in PEG-400, releasing N2 and H2O as the byproducts. The efficient and compatible process was considered to take place in the absence of metallic catalysts through a radical mechanism as determined by EPR analysis.
磺酰基酰肼和二硫化物之间的绿色和实际协议在本文中报道的不对称硫代磺酸酯与H的援助合成2 Ó 2在PEG-400,释放Ñ 2和H 2 O作为副产物。有效和相容的过程被认为是在不存在金属催化剂的情况下通过EPR分析确定的自由基机理进行的。
Visible-light-promoted C(sp<sup>3</sup>)–H thiolation of aliphatic ethers with thiosulfonates
A visible-light-promoted direct thiolation of α-C(sp3)–H in ethers with thiosulfonates was developed for the preparation of α-arylthioethers using easily availably Na2-eosin Y and TBHP as a photocatalyst and oxidant. This reaction occurred smoothly under the irradiation of 5 W blue light at room temperature and generated the corresponding products in good to excellent yields.
使用容易获得的 Na 2 -伊红 Y 和 TBHP 作为光催化剂和氧化剂,开发了可见光促进的 α-C(sp 3 )–H 在醚中与硫代磺酸盐的直接硫醇化,用于制备 α-芳基硫醚。该反应在室温下5W蓝光照射下顺利进行,并以优良的收率生成相应的产物。
Leandri; Tundo, Annali di Chimica, 1954, vol. 44, p. 264,267,268
作者:Leandri、Tundo
DOI:——
日期:——
Ammonium iodide-mediated electrosynthesis of unsymmetrical thiosulfonates from arenesulfonohydrazides and thiols
作者:Alexander O. Terent’ev、Olga M. Mulina、Alexey I. Ilovaisky、Vladimir A. Kokorekin、Gennady I. Nikishin
DOI:10.1016/j.mencom.2019.01.027
日期:2019.1
Unsymmetrical thiosulfonates were synthesized from thiols and arenesulfonohydrazides by their electrolysis in undivided cell equipped with graphite anode and stainless steel cathode under high current density applying NH4I both as a redox catalyst and a supporting electrolyte. In the course of the process, oxidative formation of S-S bond occurs with the loss of hydrazine moiety.