The reaction of lithiated ortho-toluamides and related species with vinylsilanes was examined in order to develop a new, convenient synthesis of 1-tetralones and 1-naphthols.
Oxidative Sulfonylation of Hydrazones Enabled by Synergistic Copper/Silver Catalysis
作者:Jun Xu、Chao Shen、Xian Qin、Jie Wu、Pengfei Zhang、Xiaogang Liu
DOI:10.1021/acs.joc.0c02249
日期:2021.3.5
A copper/silver-cocatalyzed protocol for oxidative sulfonylation of hydrazones is demonstrated. A wide range of β-ketosulfones and N-acylsulfonamides are directly synthesized in moderate to good yields. Our work provides a viable method for scalable preparation of β-ketosulfone derivatives that have found wide applications in the pharmaceutical industry.
Arylsulfonyl naphthalene derivatives and uses thereof
申请人:Harris New Ralph
公开号:US20070293526A1
公开(公告)日:2007-12-20
Compounds of the formula I:
or pharmaceutically acceptable salts thereof,
wherein m, q, Ar, R
1
, R
2
and R
7
are as defined herein. Also provided are methods for preparing, compositions comprising, and methods for using compounds of formula I.
A Benzannulation Protocol To Prepare Substituted Aryl Amines Using a Michael-Aldol Reaction of β-Keto Sulfones
作者:Sezgin Kiren、Albert Padwa
DOI:10.1021/jo9017793
日期:2009.10.16
A practical benzannulation method to prepare variously substituted aryl amines and sulfides was developed. The approach involves a Michael-aldol reaction of β-keto sulfones with enones followed by a subsequent condensation of the initial adduct with various amines. The base-induced Michael-aldol cascade proceeds smoothly with a number of different β-keto sulfones, affording the adducts as single diastereomers
An efficient access to β-ketosulfones <i>via</i> β-sulfonylvinylamines: metal–organic framework catalysis for the direct C–S coupling of sodium sulfinates with oxime acetates
作者:Tuong A. To、Chau B. Tran、Ngoc T. H. Nguyen、Hai H. T. Nguyen、Anh T. Nguyen、Anh N. Q. Phan、Nam T. S. Phan
DOI:10.1039/c8ra02389a
日期:——
A copper-based framework Cu2(OBA)2(BPY) was synthesized and used as a recyclable heterogeneous catalyst for the synthesis of β-sulfonylvinylamines from sodium sulfinates and oxime acetates via direct C–S coupling reaction. The transformation was remarkably affected by the solvent, and chlorobenzene emerged as the best option. This Cu-MOF displayed higher activity than numerous conventional homogeneous