申请人:BASF Aktiengesellschaft
公开号:US04973736A1
公开(公告)日:1990-11-27
Diethers of m- or p-hydroxyphenol, as well as the monoethers, are prepared by reacting m- or p-tert.-butoxyphenol of the formula II ##STR1## with a halogen compound in the presence of a hydroxide, carbonate and/or bicarbonate of an alkali metal or alkaline earth metal and an organic solvent which is inert under the reaction conditions, at from 20.degree. C. to 150.degree. C., and, if desired, reacting the resulting diether with a dilute aqueous inorganic acid at from 30.degree. to 100.degree. C. to give the monoether. The end products which can be prepared by the process according to the invention are useful starting materials for the preparation of dyes, drugs and crop protection agents.
通过在碱金属或碱土金属的氢氧化物、碳酸盐和/或碱金属或碱土金属的碳酸氢根的存在下,将 II式##STR1##的m-或p-叔丁氧基苯酚与卤素化合物在惰性有机溶剂中反应制备m-或p-羟基苯酚的二醚或单醚。反应温度为20摄氏度至150摄氏度。如果需要,可以将产生的二醚与稀释的无机酸在30摄氏度至100摄氏度下反应,制备出单醚。根据该发明的方法可以制备出的最终产品是用于制备染料、药品和农药的有用起始原料。