申请人:MAKHTESHIM CHEMICAL WORKS LIMITED
公开号:EP0404092A2
公开(公告)日:1990-12-27
N-n-propyl-N-2-(2,4,6-trichlorophenoxy)-ethylamine is prepared by selectively chlorinating 2-phenoxy ethanol by reacting it with chlorine either in the presence of hydrogen chloride at a temperature of from -10°C to 50°C or in the presence of urea at a temperature of from 20°C to 55°C in a water/carbon tetrachloride solvent mixture to form 2-(2,4,6-trichlorophenoxy)ethanol; reacting the 2-(2,4,6-trichlorophenoxy)ethanol with thionyl chloride in the presence of a catalytic amount of tetraalkyl ammonium chloride, optionally in the presence of a solvent to form 2-(2,4,6-trichlorophenoxy,ethyl chloride; and reacting the 2-(2,4,6-trichlorophenoxy) ethyl chloride with n-propylamine at a temperature of from 20°C to 150°C, optionally in the presence of water to form N-n-propyl-N-2-(2,4,6-trichlorophenoxy) ethyl amine,
N-正丙基-N-2-(2,4,6-三氯苯氧基)-乙胺的制备方法是:在水/四氯化碳溶剂混合物中,选择性地氯化 2-苯氧基乙醇,在氯化氢存在下,温度为 -10°C 至 50°C,或在尿素存在下,温度为 20°C 至 55°C,使其与氯反应,生成 2-(2,4,6-三氯苯氧基)乙醇;在一定量的四烷基氯化铵催化下,可选择在溶剂存在下,使 2-(2,4,6-三氯苯氧基)乙醇与亚硫酰氯反应,生成 2-(2,4,6-三氯苯氧基)乙基氯;将 2-(2,4,6-三氯苯氧基)乙基氯化物与正丙胺在 20°C 至 150°C 的温度下(可选择在有水的情况下)反应,生成 N-正丙基-N-2-(2,4,6-三氯苯氧基)乙基胺、