Copper-Catalyzed Coupling of Acyl Chlorides with <i>gem</i>-Difluorinated Organozinc Reagents via Acyl Dithiocarbamates
作者:Salavat S. Ashirbaev、Vitalij V. Levin、Marina I. Struchkova、Alexander D. Dilman
DOI:10.1021/acs.joc.7b02598
日期:2018.1.5
A cross-coupling of acyl chlorides with gem-difluorinated organozincreagents affording difluorinated ketones is described. In the reaction, acyl chlorides are first treated with potassium dithiocarbamate to generate S-acyl dithiocarbamates, which couple with organozincs in the presence of a copper(I) catalyst.
Synthesis and application of new S-benzoheterocycle thiobenzoates photoinitiators
作者:Ziren Zhao、Chen Wang、Feng Liu、Bianxiang Zhang
DOI:10.1007/s11164-020-04170-3
日期:2020.7
A series of free radical photoinitiators with thioester bonds were synthesized by the nucleophilic substitutionreaction of acyl chloride and thiol or thiophenol. These compounds could be efficiently obtained under mild reaction conditions and were fully characterized by 1H NMR, 13C NMR and high-resolution mass spectrometry. This kind of compounds exhibited a strong ultraviolet–visible light absorption
通过酰基氯与硫醇或硫酚的亲核取代反应合成了一系列具有硫酯键的自由基光引发剂。这些化合物可以在温和的反应条件下有效获得,并通过1 H NMR进行了全面表征,1313 C NMR和高分辨率质谱。这种化合物在DMSO中表现出很强的紫外线-可见光吸收光谱,并在330 nm附近扩展了吸收。此外,这些化合物被用作紫外线固化中的自由基光引发剂,并且所得膜与市售光引发剂如1-羟基环己基苯基酮(Irgacure 184)和二苯甲酮相比具有可比的机械性能。我们还提出了一种可能的 S- 苯并杂环硫代苯甲酸酯作为光引发剂的光引发聚合机理 。
Acylation and Alkoxycarbony-lation of Benzoxazoline-2-thione and Benzothiazoline-2-thione
作者:Takehiko Nishio、Kiyoko Shiwa
DOI:10.3987/com-03-s(p)10
日期:——
Acylation of benzoxazoline-2-thione (1) and benzothiazoline-2-thione (2) with acetic anhydride (3) and acyl chlorides (4) gave N-acyl (5, 6) and/or S-acyl (7, 8) derivatives depending on the nature of acylating agents and bases used. Alkoxycarbonylation of 1 with aralkyl chlorocarbonates (9) gave N-alkoxycarbonyl derivatives (10) mainly, while that of 2 with aralkyl chloroccarbonates (9) gave S-alkoxycarbonyl derivatives (12) exclusively. Photolysis of N-acyl derivatives (5 or 6) in the presence of alcohols afforded 1 or 2, respectively, together with esters (16).
<i>S</i>- and<i>N</i>-Acyl Derivatives of 2-Mercaptobenzoxazole; New, Highly Reactive Acylating Agents for Synthesis of Amides and Esters
作者:Mitsuru Ueda、Kouji Seki、Yoshio Imai
DOI:10.1055/s-1981-29674
日期:——
Ultrasound promoted synthesis of thioesters from 2-mercaptobenzoxa(thia)zoles
作者:Anaí Duarte、Wilson Cunico、Claudio M.P. Pereira、Alex F.C. Flores、Rogério A. Freitag、Geonir M. Siqueira
DOI:10.1016/j.ultsonch.2009.08.004
日期:2010.2
An ultrasound-enhanced method has been developed for the synthesis of a variety of thioesters from benzoyl chlorides and 2-mercaptobenzoxa(thia)zoles. Applying this methodology, 14 compounds were synthesized in excellent yields. (C) 2009 Elsevier B.V. All rights reserved.