Mild, selective deprotection of thioacetates using sodium thiomethoxide
摘要:
A mild method for the deprotection of thioacetates is described. The reaction can be conveniently carried out at room temperature, and is compatible with a wide range of functionality. The procedure was shown to chemoselectively remove a thioacetate in the presence of an acetate, (C) 1998 Elsevier Science Ltd. All rights reserved.
Solvent-Free Acetylation of Thiols Under Catalysis of MgBr<sub>2</sub>·OEt<sub>2</sub>
作者:Mohammad M. Mojtahedi、M. Saeed Abaee、Mashal Javadpour
DOI:10.1080/10426501003645878
日期:2010.10.28
Solvent-free protection of aromatic and aliphatic thiols with acetic anhydride was performed at room temperature under trace quantities of magnesium bromide ethyletherate, affording rapid formation of various thiol esters in excellent yields.
Manganese-mediated acetylation of alcohols, phenols, thiols, and amines utilizing acetic anhydride
作者:Isha Jain、Ramandeep Sharma、Payal Malik
DOI:10.1080/00397911.2019.1650282
日期:——
Abstract Manganese(II) chloride-catalyzed acetylation of alcohols, phenols thiols and amines with acetic anhydride is reported. This method is environment-friendly and economically viable as it involves inexpensive, relatively benign catalyst, mild reaction condition, and simple workup. Acetylation is performed under the solvent-free condition at ambient temperature and acetylated products obtained
摘要 氯化锰 (II) 催化醇、酚、硫醇和胺与乙酸酐乙酰化。该方法环境友好且经济可行,因为它涉及廉价、相对温和的催化剂、温和的反应条件和简单的后处理。乙酰化是在无溶剂条件下在环境温度下进行的,乙酰化产物以良好到极好的收率获得。具有各种官能团的伯、仲杂环胺和酚类以良好的收率顺利乙酰化。该方法具有出色的化学选择性,在羟基/硫醇基团的存在下,氨基优先被乙酰化。图形概要
<i>o</i>-Benzenedisulfonimide as a Soft, Efficient, and Recyclable Catalyst for the Acylation of Alcohols, Phenols, and Thiols under Solvent-Free Conditions: Advantages and Limitations
o-Benzenedisulfonimide turns out to be a highly efficient Bronsted acid catalyst for the acylation of a number of alcohols, phenols, and thiols under a metal- and solvent-free procedure; reaction conditions are mild and yields very good. After the workup, the catalyst can be easily recovered and purified, ready to be reused, with economic and ecological advantages.
Abstract Carboxylic esters and thioacetates were conveniently prepared in good to excellent yields under mild conditions by the reaction of alkyl halides with sodium carboxylates or sodium thioacetate catalyzed by PEG400 in the absence of solvents.
A Convenient Synthesis of Thioacetates and Thiobenzoates Using Silica-Gel Supported Potassium Thioacetate
作者:Tadashi Aoyama、Toshio Takido、Mitsuo Kodomari
DOI:10.1081/scc-120025193
日期:2003.11
Abstract A simple and efficient procedure has been developed for the synthesis of thioesters by a reaction of alkyl halides with silica-gel supported potassium thioacetate or thiobenzoateunder mild conditions.