Straightforward chemoselective access to unsymmetrical dithioacetals through a thiosulfonate homologation-nucleophilic substitution sequence
作者:Laura Ielo、Veronica Pillari、Natalie Gajic、Wolfgang Holzer、Vittorio Pace
DOI:10.1039/d0cc04896h
日期:——
presented for the preparation of rare unsymmetrical dithioacetals. The judicious selection of thiosulfonates as convenient sulfur electrophilic sources – upon the homologation event conducted on an intermediate α-halothioether – guarantees the release of the non-reactive sulfonate group, thus enabling the subsequent nucleophilic displacement with an external added thiol [(hetero)aromatic and/or aliphatic]
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.
Perfluoroalkylation of Thiosulfonates: Synthesis of Perfluoroalkyl Sulfides
作者:Ziwei Luo、Xinkan Yang、Gavin Chit Tsui
DOI:10.1021/acs.orglett.0c02235
日期:2020.8.7
A practical synthesis of perfluoroalkyl sulfides is described. The method employs stable and readily accessible thiosulfonates as new electrophiles with commercial nucleophilic perfluoroalkylating reagents. The mild reaction conditions allow access to a wide variety of both aryl- and alkyl-substituted perfluoroalkyl sulfides amenable to pharmaceutical development. Furthermore, the reaction operation
Transition‐Metal‐Free Synthesis of Unsymmetrical Disulfides
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Three‐Component Reaction of Thiosulfonates, Thiourea and Alkyl halides
作者:Dungai Wang、Quan He、Keqiang Shi、Mingteng Xiong、Yifeng Zhou、Yuanjiang Pan
DOI:10.1002/adsc.202100165
日期:2021.6.8
A transition-metal-free approach to synthesize unsymmetrical disulfides is reported that relies on a K2CO3-promoted one-pot reaction of thiosulfonates, thiourea and alkylhalides under mild conditions. The protocol tolerates a wide range of substrates, leading to various types of unsymmetrical disulfides in moderate to excellent yields. More importantly, the late-stage modification of natural products
据报道,一种合成不对称二硫化物的无过渡金属方法依赖于在温和条件下K 2 CO 3促进的硫代磺酸盐、硫脲和烷基卤化物的一锅反应。该协议容忍广泛的底物,导致各种类型的不对称二硫化物,产量中等至极好。更重要的是,还实现了天然产物和药物分子的后期修饰。