A general and mild synthesis of thioesters and thiols from halides
摘要:
The conversion of a wide variety of halides to thioesters by reaction with potassium thiocetate under mild conditions is described, and the generality of the method is demonstrated. (C) 1999 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.
The Activation of Bivalent Sulfur Compounds with Cupric Chloride and Zinc Chloride. The Benzylation and Acylation of Aromatic Compounds with Sulfides and Thiol Esters
with various benzyl sulfides in the presence of equimolar amounts of cupric chloride and zinc chloride was investigated. For example, in the case of benzylation of anisole with 4-benzylthiopyridine, o- and p-benzylanisoles were obtained in 79% yield in the presence of cupric chloride and zinc chloride. On the other hand, when the reaction was carried out in the presence of cupric chloride alone, the
Acylation of Phenols, Alcohols, Thiols, Amines and Aldehydes Using Sulfonic Acid Functionalized Hyper-Cross-Linked Poly(2-naphthol) as a Solid Acid Catalyst
作者:Reddi Mohan Naidu Kalla、Sirigireddy Sudharsan Reddy、Il Kim
DOI:10.1007/s10562-019-02811-w
日期:2019.10
fabricated by the Friedel–Crafts alkylation of 2-naphthol has been functionalized with sulfonicacid to obtain a solid acid catalyst. The catalyst is applied for the protection of phenol, alcohols, thiols, amines and aldehydes with acetic anhydride at room temperature. The catalytic protection using the new solid acid is featured by achieving high yield at neat condition, needing no aqueous work-up and/or
available commodity chemicals is a central goal of organic synthesis. In this context, the thiol–ene click chemistry for carbon–sulfur (C–S) bond construction has found widespread applications in the synthesis of pharmaceuticals and functional materials. In contrast, the selective carbonyl thiyl radical addition to carbon–carbon multiple bonds remains underdeveloped. Herein, we report a carbonyl thiyl radical-based
In order to make it possible to maintain a low dynamic storage modulus at low temperatures in a tread rubber, which is the portion of a tyre to be in contact with a road surface, i.e., to allow the rubber to remain soft, without changing in the dynamic storage modulus at normal temperature of the tread rubber, provided is a tyre including a foamed rubber on a surface of a tread rubber, the foamed rubber being constituted from a rubber composition in which a phenol resin is blended.