申请人:Ihara Chemical Industry Co., Ltd.
公开号:EP3015451A1
公开(公告)日:2016-05-04
The purpose of the present invention is to provide an economically favorable, industrialization-suitable method for manufacturing nitrobenzene compounds of general formula (1). A method for manufacturing nitrobenzene compounds of general formula (1):
(in the formula, R1 represents a halogen atom; R2, R3, and R4 represent a hydrogen atom, etc.; and R5 represents a halogen atom or alkoxy carbonyl group), the method including the following processes: (i) a process for reacting aniline compounds of general formula (2):
(in the formula, R1, R2, R3, R4, and R5 are as previously defined.) in the presence of a metal salt of nitrous acid and an acid, and (ii) a process for reacting the product of process (i) in the presence of a metal salt of nitrous acid and a copper compound; and the total amount of water used in process (ii) being 1.2-2.2 L (liters) with respect to one mole of the compound of general formula (2).
本发明的目的是提供一种经济上有利的、适合工业化生产的通式(1)硝基苯化合物的制造方法。一种制造通式(1)硝基苯化合物的方法:
(式中,R1 代表卤原子;R2、R3 和 R4 代表氢原子等;R5 代表卤原子或烷氧基羰基),该方法包括以下过程:(i) 通式(2)的苯胺化合物的反应过程:
(式中,R1、R2、R3、R4 和 R5 如前所定义。),以及(ii)工艺(i)的产物在亚硝酸金属盐和铜化合物存在下进行反应的工艺;工艺(ii)中相对于一摩尔通式(2)化合物的用水总量为 1.2-2.2 L(升)。