sphinomethyl)cyclopentane as a catalyst, a range of aryl bromides and chlorides undergoes Suzuki cross-coupling with alkylboronic acids in good yields. Several alkyl substituents such as ethyl, n-butyl, n-octyl, isobutyl or 2,2-dimethylpropyl on the alkylboronic acids have been successfully used. The functional group tolerance on the arylhalide is remarkable; substituents such as fluoro, methyl, methoxy
通过使用[PdCl(C 3 H 5)] 2 /顺式,顺式,顺式-1,2,3,4-四(二苯基膦甲基)环戊烷作为催化剂,一系列芳基溴化物和氯化物进行铃木交叉偶联与烷基硼酸的收率很好。几个烷基取代基,例如乙基,正丁基,n已经成功地使用了烷基硼酸上的-辛基,异丁基或2,2-二甲基丙基。芳基卤对官能团的耐受性显着;可以容忍诸如氟,甲基,甲氧基,乙酰基,甲酰基,苯甲酰基,硝基或腈之类的取代基。此外,该催化剂即使在位阻芳基溴的反应中也可以低负荷使用。
[EN] CATALYSED ACYLATION OF ALKYLATED BENZENE DERIVATIVES<br/>[FR] ACYLATION CATALYSEE DE DERIVES DE BENZENE ALKYLE
申请人:COUNCIL SCIENT IND RES
公开号:WO2005030691A1
公开(公告)日:2005-04-07
The present invention relates to an improved zeolite based catalytic process for the preparation of acylated aromatic ethers and more particularly, the invention relates to eco-friendly catalysed acylation of isobutylbenzene for the preparation of acylated aromatic compound, namely p-isobutylacetopenone.
METHODS OF ACYLATION WITH AN IONIC LIQUID CATALYZING MEDIUM
申请人:THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA
公开号:US20180170847A1
公开(公告)日:2018-06-21
Described herein are methods of acylating an aryl substrate comprising combining a substituted aryl substrate with an acylating agent in the presence of a catalyzing medium, thereby acylating the substituted aryl substrate in the para position, wherein the catalyzing medium is an ionic liquid comprising at least one cation and at least one metal halide anion.
Chelate-Assisted Oxidative Coupling Reaction of Arylamides and Unactivated Alkenes: Mechanistic Evidence for Vinyl C−H Bond Activation Promoted by an Electrophilic Ruthenium Hydride Catalyst
作者:Ki-Hyeok Kwon、Do W. Lee、Chae S. Yi
DOI:10.1021/om100764c
日期:2010.11.22
ruthenium-hydride complex [(eta(6)-C(6)H(6))(PCy(3))(CO)RuH](+)BF(4) (-) was found to be a highlyregioselective catalyst for the oxidative C-H coupling reaction of aryl-substituted amides and unactivated alkenes to give ortho-alkenylamide products. The kinetic and spectroscopic analyses support a mechanism involving a rapid vinyl C-H activation followed by a rate-limiting C-C bond formation steps.
阳离子钌氢化物复合物 [(eta(6)-C(6)H(6))(PCy(3))(CO)RuH](+)BF(4) (-) 被发现是一种高度区域选择性的芳基取代酰胺和未活化烯烃的氧化 CH 偶联反应生成邻烯基酰胺产物的催化剂。动力学和光谱分析支持涉及快速乙烯基 CH 活化和限速 CC 键形成步骤的机制。
A method for producing 2-aryl-propionaldehydes
申请人:HAMARI YAKUHIN KOGYO KABUSHIKI KAISHA
also known as HAMARI CHEMICALS, LTD.
公开号:EP0220792A1
公开(公告)日:1987-05-06
A 2-aryl-propionaldehyde of the formula
(wherein Ar denotes substituted or unsubstituted phenyl, especially
is produced in high yield by reacting a methyl aryl-ketone of the formula,
with phenyldimethylsulfonium methylsulfate of the formula,
in the presence of alkali metal hydroxide to obtain a reaction mixture containing 2-phenyl-1,2-epoxypropane of the formula.
and thioanisole, and subjecting the reaction mixture to contact with anhydrous MgCl2. The propionaldehyde compound is also produced in high yield by contacting the epoxypropane compound with anhydrous MgC12 in the presence of a soft nucleophile such as a sulfide, a thiol and a phosphine.