Process for preparing aromatic amines in the presence of palladaphosphacyclobutane catalysts
申请人:Clariant GmbH
公开号:US06353136B1
公开(公告)日:2002-03-05
Aromatic amines of the formula (I)
Ar—[NR6R7]n (I)
are prepared by reacting a haloaromatic of the formula (II)
Ar—Hal (II)
with an amine of the formula (III)
R6R7NH (III)
in the presence of a palladaphosphacyclobutane and a base and in the presence or absence of an ionic halide in a solvent at temperatures of from 20 to 200° C.
Katalytisches Verfahren zur Herstellung von aromatischen Aminen unter Verwendung von Palladaphosphacyclobutanen
申请人:Clariant GmbH
公开号:EP1083163A2
公开(公告)日:2001-03-14
Aromatische Amine der Formel (I)
Ar-[NR6R7]n (I)
werden hergestellt durch Umsetzung eines Halogenaromaten der Formel (II)
Ar-Hal (II)
mit einem Amin der Formel (III)
R6R7NH (III)
in Gegenwart eines Palladaphosphacyclobutans und einer Base, gegebenenfalls in Gegenwart eines ionischen Halogenids, in einem Lösungsmittel bei Temperaturen von 20 bis 200°C.
式(I)的芳香胺
Ar-[NR6R7]n (I)
由式 (II) 的卤代芳香胺反应制备而成
Ar-Hal (II)
与式 (III)
R6R7NH (III)
在 20 至 200°C 的溶剂中,在一种全磷环丁烷和一种碱(可选择在一种离子卤化物的存在下)的存在下进行。
US6353136B1
申请人:——
公开号:US6353136B1
公开(公告)日:2002-03-05
US6532098B1
申请人:——
公开号:US6532098B1
公开(公告)日:2003-03-11
A New Route to Polykis(dialkylamino)benzenes and -naphthalenes Based on Protodefluorination of Electron-Rich Fluoroaromatics: Anion Radicals of Arenes as a Simple and Effective Alternative to ‘Classical’ LAH-Based Systems
A simple and effective procedure for protodefluorination of electron-rich fluoroaromatic compounds has been developed. It operates with aromatic anion radicals as reducing agents and shows superior results over 'classical' lithiumaluminumhydride based systems.