Method for acylation or sulphonylation of an aromatic compound
申请人:Rhodia Chimie
公开号:US06348631B1
公开(公告)日:2002-02-19
The present invention relates to a process for the acylation or sulphonylation of an aromatic compound.
More particularly, the invention relates to a process for the acylation or sulphonylation of an activated or deactivated aromatic compound.
The invention is applied to the preparation of aromatic ketones or sulphones.
The process for the acylation or sulphonylation of an aromatic compound which consists in reacting at least one aromatic compound with an acylating or sulphonylating agent, in the presence of a Friedel-Crafts catalyst is characterized in that the acylation or sulphonylation reaction is carried out in liquid phase under microwave irradiation.
A highly chemoselective, efficient and nano-Pd catalyzed protocol for the rapid construction of sulfoxides and sulfones via the oxidation of symmetrical and unsymmetrical sulfides using H2O2 as an oxidant has been developed, respectively. The ready availability of starting materials, easy recovery and reutilization of the catalyst, wide substrate scope, and high yields make this protocol an attractive
已经开发出一种高度化学选择性,高效和纳米钯催化的方案,分别通过使用H 2 O 2作为氧化剂,通过对称和不对称硫化物的氧化来快速构建亚砜和砜。起始材料的可用性,催化剂的易于回收和再利用,广泛的底物范围以及高收率使得该方案成为有吸引力的替代方案。该方法还涉及无金属和微波促进的对称的二芳基硫醚的合成,以及FeCl 3介导的芳族重氮四氟硼酸盐与Na 2 S·9H 2的反应制备对称的二芳基二硫化物。O作为硫源。另外,经由K 2 CO 3介导的四氟硼酸壬二唑鎓与对称的二硫化物的反应产生了不对称的硫化物。
Cu(I)-Catalysed coupling of Arylsulfinic Salts with Aryl Bromides
作者:Yao Peng
DOI:10.3184/174751914x14034421692005
日期:2014.7
An efficient Cu(I)-catalysed synthesis of diarylsulfones from arylsulfinic acid salts and aryl bromides in 1,3-dimethyl-2-imidazolidinone at 80 °C in the presence of CuBr and pyridine has been developed. The high-yielding process exhibits significant functional group tolerance and allows for the preparation of a number of diarylsulfones under mild conditions.
An efficient Cu-catalyzed microwave-assisted synthesis of diaryl sulfones
作者:Ganesh C. Nandi
DOI:10.1080/00397911.2016.1263337
日期:2017.2.16
ABSTRACT An efficient and microwave-assisted simple protocol for the synthesis of symmetrical/asymmetrical diaryl sulfones through the Cu(II)-catalyzed reaction of sodium salt of sulfinic acid with aryl boronic acid has been described. Various diaryl sulfones have been synthesized in very short reaction times with moderate to very good yields. Additionally, the method is also useful for the synthesis of aryl
Unsymmetrical Diaryl Sulfones through Palladium-Catalyzed Coupling of Aryl Boronic Acids and Arylsulfonyl Chlorides
作者:B. P. Bandgar、Sampada V. Bettigeri、Jaywant Phopase
DOI:10.1021/ol049692c
日期:2004.6.1
[reaction: see text] A simple and efficient method for the synthesis of unsymmetrical diaryl sulfones using the palladium-catalyzedcoupling of aryl boronic acids and arylsulfonyl chlorides has been developed. High product yields, a short reaction time, and mild reaction conditions are important features of this method.