Pd(II)-Catalyzed C−H Activation/Aryl−Aryl Coupling of Phenol Esters
作者:Bin Xiao、Yao Fu、Jun Xu、Tian-Jun Gong、Jian-Jun Dai、Jun Yi、Lei Liu
DOI:10.1021/ja909818n
日期:2010.1.20
reactions have been well-known, Pd(II) insertion into C-H bonds promoted by coordination of an oxygen-only group to the palladium remains rather rare. In the present study, the first cyclopalladation complex formed from a simple phenol ester was characterized by X-ray crystallography. A promising protocol for the ortho C-H activation/aryl-aryl coupling of phenol esters that was not sensitive to moisture
尽管含氮基团导向的环钯化反应已广为人知,但通过仅含氧的基团与钯的配位促进 Pd(II) 插入 CH 键的情况仍然相当罕见。在本研究中,第一个由简单苯酚酯形成的环钯化配合物通过 X 射线晶体学表征。然后建立了对水分或空气不敏感的苯酚酯邻位 CH 活化/芳基-芳基偶联的有前途的方案。该反应的效用已被证明可用于合成有用的苯酚衍生物。
PROCESS FOR PRODUCING ACYLOXYBENZENESULFONIC ACID OR SALT THEREOF
申请人:Kao Corporation
公开号:EP0700900A1
公开(公告)日:1996-03-13
A process for producing an acyloxybenzenesulfonic acid or a salt thereof by sulfonating an acyloxybenzene (1) with the use of at least one additive selected from among carboxylic acids or esters (2), alkyl phosphates (3), polyphosphoric acids (4), amide and like compounds (6), carbonic ester compounds (7), and hydroxylic compounds (8). The process enables acyloxybenzenesulfonic acids with good hues to be produced industrially in high yields at a high selectivity and a low cost as compared with the conventional processes.