申请人:Saltigo GmbH
公开号:EP2065357A1
公开(公告)日:2009-06-03
Described is a process for preparing diaryl ethers of the formula (I)
Ar-O-Ar' (I)
In which Ar is an aryl or substituted aryl group and Ar' is an aryl, substituted aryl, heteroaryl or substituted heteroaryl group,
by reacting an aryl of formula (II) or a aryloxy salt of formula (III)
Ar-OH (II)
Ar-OR (III)
In which Ar has the same meaning as in formula (I) and R is an alkali metal,
with an aryl or heteroaryl bromide of formula (IV)
Ar'-Br (IV)
In which Ar' has the same meaning as in formula (I),
characterized in that the reaction is carried out in the presence of a copper(I)salt and a 1-substituted imidazole as catalyst system.
描述了一种制备式 (I) 的二芳基醚的工艺
Ar-O-Ar' (I)
其中 Ar 是芳基或取代芳基,Ar'是芳基、取代芳基、杂芳基或取代杂芳基、
使式(II)的芳基或式(III)的芳氧基盐反应
Ar-OH (II)
Ar-OR (III)
其中 Ar 与式(I)中的含义相同,R 为碱金属、
与式 (IV) 的芳基或杂芳基溴化物反应
Ar'-Br (IV)
其中 Ar' 的含义与式(I)中的相同、
其特征在于该反应是在铜(I)盐和 1-取代咪唑作为催化剂体系存在下进行的。