Switchable Synthesis of Aryl Sulfones and Sulfoxides through Solvent-Promoted Oxidation of Sulfides with O<sub>2</sub>/Air
作者:Zhen Cheng、Pengchao Sun、Ailing Tang、Weiwei Jin、Chenjiang Liu
DOI:10.1021/acs.orglett.9b03192
日期:2019.11.15
A practical and switchable method for the synthesis of arylsulfones and sulfoxides via sulfide oxidation was developed. The chemoselectivities of products were simply controlled by reaction temperature using O2/air as the terminal oxidant and oxygen source. The broad substrate scope, easy realization of gram-scale production, and the simplification of a sulfide oxidation system render the strategy
A practical, environmentally friendly and safe methodology for the synthesis of sulfoxides through the electrooxidation of sulfides with O2 and H2O as the oxygen source is reported. This method is characterized by a wide substrate scope, good chemoselectivity, cheap electrode materials, and external catalyst and oxidant free. The protocol allows also large-scale preparations without decrease in yields
报道了一种以 O 2和 H 2 O 作为氧源通过硫化物电氧化合成亚砜的实用、环保和安全的方法。该方法具有底物范围广、化学选择性好、电极材料便宜、无外部催化剂和氧化剂等特点。该协议还允许在不降低产量的情况下进行大规模制备。
An environmentally benign and selective electrochemical oxidation of sulfides and thiols in a continuous-flow microreactor
作者:Gabriele Laudadio、Natan J. W. Straathof、Menno D. Lanting、Benny Knoops、Volker Hessel、Timothy Noël
DOI:10.1039/c7gc01973d
日期:——
A practical and environmentally benign electrochemical oxidation of thioethers and thiols in a commercially-available continuous-flow microreactor is presented. Water is used as the source of oxygen to enable the oxidation process. The oxidation reaction utilizes the same reagents in all scenarios and the selectivity is solely governed by the applied potential. The procedure exhibits a broad scope
Flow Electrosynthesis of Sulfoxides, Sulfones, and Sulfoximines without Supporting Electrolytes
作者:Nasser Amri、Thomas Wirth
DOI:10.1021/acs.joc.1c00860
日期:2021.11.19
An efficient electrochemical flow process for the selective oxidation of sulfides to sulfoxides and sulfones and of sulfoxides to N-cyanosulfoximines has been developed. In total, 69 examples of sulfoxides, sulfones, and N-cyanosulfoximines have been synthesized in good to excellent yields and with high current efficiencies. The synthesis was assisted and facilitated through a supporting electrolyte-free
Metal- and additive-free oxygen-atom transfer reaction: an efficient and chemoselective oxidation of sulfides to sulfoxides with cyclic diacyl peroxides
作者:Shaoyan Gan、Junjie Yin、Yuan Yao、Yang Liu、Denghu Chang、Dan Zhu、Lei Shi
DOI:10.1039/c7ob00021a
日期:——
common functional groups, and is scalable and applicable to the late-stage sulfoxidation strategy. A preliminary mechanistic study by quantum mechanical calculations suggests that a single two-electron transfer process is energetically more favorable, and indicates the reactivity of cyclic diacyl peroxides distinct from conventional acyclic acyl peroxides.