Sulfated tungstate/dioxygen: a new catalytic system for oxysulfonylation of styrenes to form β-keto sulfones
作者:Ganesh D. Wagh、Snehalata B. Autade、Raghavendra V. Kulkarni、Krishnacharya G. Akamanchi
DOI:10.1039/d0nj01763a
日期:——
A new system for synthesis of a wide range of β-ketosulfones using sulfated tungstate as a heterogeneous catalyst and oxygen as an environmentally benign oxidant with aryl hydrazides and styrenes as reacting counterparts has been developed. The preliminary experimental results support the involvement of free radical species. Thus, aryl sulfonyl free radicals, generated by oxidation of aryl sulfonyl
Visible-light initiated direct oxysulfonylation of alkenes with sulfinic acids leading to β-ketosulfones
作者:Daoshan Yang、Ben Huang、Wei Wei、Jin Li、Gu Lin、Yaru Liu、Jiehua Ding、Pengfei Sun、Hua Wang
DOI:10.1039/c6gc01403h
日期:——
Highly efficient visible-light initiated direct oxysulfonylation of alkenes with sulfinic acids leading to β-ketosulfones has been realized under metal-free conditions.
利用高效的可见光引发的直接烯烃与亚砜酸发生氧磺化反应,从而在无金属条件下合成β-酮磺酮。
Efficient sulfonylation of ketones with sodium sulfinates for the synthesis of β-keto sulfones
作者:Siqi Deng、En Liang、Yinrong Wu、Xiaodong Tang
DOI:10.1016/j.tetlet.2018.09.049
日期:2018.10
The oxidative sulfonylation of ketones with sodium sulfinates as the sulfone source and DMSO as the oxidant is reported. A series of β-keto sulfones were obtained in good to excellent yields. The advantages of this efficient protocol include the low cost of DMSO and HBr, and a broad scope.
[EN] CHEMICAL COMPOUNDS<br/>[FR] COMPOSES CHIMIQUES
申请人:ASTRAZENECA AB
公开号:WO2004011410A1
公开(公告)日:2004-02-05
Compounds of formula (I):wherein variable groups are as defined within; for use in the inhibition of 11βHSD1 are described.
式(I)的化合物:其中变量基团如定义内;用于抑制11βHSD1。
Heterogeneous copper‐catalyzed oxidative coupling of oxime acetates with sodium sulfinates: An efficient and practical synthesis of β‐keto sulfones
作者:Jianhui Xia、Xue Huang、Shengyong You、Mingzhong Cai
DOI:10.1002/aoc.5001
日期:2019.8
An efficient and practical route to β‐keto sulfones has been developed through heterogeneous oxidativecoupling of oxime acetates with sodiumsulfinates by using an MCM‐41‐supported Schiff base‐pyridine bidentate copper (II) complex [MCM‐41‐Sb,Py‐Cu (OAc)2] as the catalyst and oxime acetates as an internal oxidant, followed by hydrolysis. The reaction generates a variety of β‐keto sulfones in good