申请人:Nippon Shokubai Co., Ltd.
公开号:EP0995734A1
公开(公告)日:2000-04-26
A method for producing inexpensively in a high yield a halogen-containing aromatic compound, particularly a halogen-containing aromatic compound incorporating therein a bromodifluoroalkyl group, and a halogen-containing naphthalene compound useful as a raw material for a resin excelling in heat resistance, chemical resistance and water repellency, and having a low dielectric constant and a low refractivity are provided. This invention relates to a method for the production of an aromatic compound (II) having a (CH2)nCX2Br group (wherein X represents a fluorine or chlorine atom and the X's may be same or different, and n is an integer in the range of 0 to 4) by the reaction of photo-bromination of an aromatic compound (I) having a (CH2)nCX2H group (wherein X and n are as defined above) with a brominating agent, wherein the photo-bromination reaction is carried out while removing hydrogen bromide generated in the reaction system and/or in an atmosphere of a low oxygen content, and a halogen-containing naphthalene compound represented by the following formula (1):
wherein Y represents -CF2H, -CF2Br, or -CHO group, Z1 and Z2 independently represent a halogen atom, and p and q independently are an integer in the range of 0 to 3.
本发明提供了一种以低成本高产率生产含卤素芳香族化合物,特别是其中含有溴二氟烷基的含卤素芳香族化合物的方法,以及一种可用作耐热性、耐化学性和憎水性优异且具有低介电常数和低折射率的树脂原料的含卤素萘化合物。本发明涉及一种芳香族化合物 (II) 的生产方法,该芳香族化合物 (II) 具有 (CH2)nCX2Br 基团(其中 X 代表氟原子或氯原子,X 可以相同或不同,n 为 0 至 4 范围内的整数),该芳香族化合物 (II) 通过具有 (CH2)nCX2H 基团(其中 X 和 n 如上定义)的芳香族化合物 (I) 与溴化剂的光溴化反应生产、其中,光溴化反应是在除去反应体系中产生的溴化氢和/或在低氧气氛中进行的,含卤素的萘化合物由下式(1)表示:
其中 Y 代表 -CF2H、-CF2Br 或 -CHO 基团,Z1 和 Z2 独立地代表卤素原子,p 和 q 独立地为 0 至 3 范围内的整数。