Metal-Free Preparation of Cycloalkyl Aryl Sulfides<i>via</i>Di-<i>tert</i>-butyl Peroxide-Promoted Oxidative C(<i>sp</i><sup>3</sup>)H Bond Thiolation of Cycloalkanes
作者:Jincan Zhao、Hong Fang、Jianlin Han、Yi Pan、Guigen Li
DOI:10.1002/adsc.201400032
日期:2014.8.11
A concise thiolation of C(sp3)-Hbond of cycloalkanes with diaryl disulfides in the presence of oxidant of di-tert-butylperoxide (DTBP) has been developed. This reaction without using any of metal catalyst, tolerates varieties of disulfides and cycloalkanes substrates, giving good to excellent chemical yields, which provides a useful approach to cycloalkyl aryl sulfides from unactivated cycloalkanes
One-Pot Thioetherification of Aryl Halides Using Thiourea and Alkyl Bromides Catalyzed by Copper(I) Iodide Free from Foul-Smelling Thiols in Wet Polyethylene Glycol (PEG 200)
tert‐butyl bromides with aryliodides, bromides and an activated chloride using thiourea catalyzed by copper(I) iodide in wet polyethyleneglycol (PEG 200) as an eco‐friendly medium in the presence of potassium carbonate at 80 and 100 °C under an inert atmosphere. The process is free from foul‐smelling thiols which makes this method more practical for the thioetherification of aryl halides. Another important
Herein, we report a borane-promoted reductive deoxygenation coupling reaction to synthesize sulfides. This reaction features excellent functional group compatibility, high efficiency, broad substrate scope, and application in late-stage functionalization of biomolecules. Preliminary mechanistic studies suggest diaryl sulfides are the intermediates of this reaction. Moreover, the real active aryl sulfide
在此,我们报告了一种硼烷促进的还原脱氧偶联反应来合成硫化物。该反应具有官能团相容性好、效率高、底物适用范围广等特点,可应用于生物分子的后期官能化。初步机理研究表明二芳基硫化物是该反应的中间体。此外,真正的活性芳基硫阴离子可以在B 2 pin 2的帮助下原位生成,并通过协同的S N 2 途径与烷基甲苯磺酸盐反应。
Pyridine‐Boryl Radical Mediated Decarboxylative Homolytic Substitution of N‐hydroxyphthalimide Ester with Ar
<sub>2</sub>
X
<sub>2</sub>
(X=S, Se)
作者:Jia Cao、Liuzhou Gao、Guoqiang Wang、Shuhua Li
DOI:10.1002/ejoc.202201290
日期:2022.12.27
A pyridine-catalyzed decarboxylative C−S/Se bonds constructions with the broadly available N-hydroxyphthalimide esters and disulfides/diselenides (Ar2X2, X=S or Se) has been developed using bis(pinacolato)diboron as the reductant. This synthetic method features mild reaction conditions, operational simplicity and good functional-group tolerance.
使用双(频哪醇)二硼作为还原剂,开发了一种吡啶催化的脱羧 C−S/Se 键结构与广泛可用的 N-羟基邻苯二甲酰亚胺酯和二硫化物/二硒化物(Ar 2 X 2 ,X=S 或 Se)。该合成方法反应条件温和、操作简单、官能团耐受性好。