申请人:Hoechst Aktiengesellschaft
公开号:US04172959A1
公开(公告)日:1979-10-30
Hydroquinone mono-phenyl ethers, and their alkali metal salts of the formula ##STR1## in which one of the radicals R.sub.1 and R.sub.2 denotes trifluoromethyl and the other denotes hydrogen or halogen and R.sub.3 represents hydrogen or an alkali metal cation or ammonium cation are prepared by reacting hydroquinone bis-phenyl ethers (bisphenoxybenzenes) of the formula ##STR2## with hydroquinone derivatives of the formula ##STR3## in which Cat denotes an alkali metal cation or ammonium cation and R.sub.4 denotes an alkali metal cation or ammonium cation or a (C.sub.1 -C.sub.4)-alkyl group, in a polar aprotic solvent at temperatures from 120.degree. to 280.degree. C., and optionally, an alkyl group present in the R.sub.4 -position is split off by treatment with an acid.
羟基苯单苯醚及其配制物的烷基金属盐的公式为:##STR1## 其中,R.sub.1和R.sub.2中的一个表示三氟甲基,另一个表示氢或卤素,R.sub.3表示氢或碱金属阳离子或铵阳离子。通过在极性无水溶剂中,将公式为:##STR2## 的羟基苯双苯醚(双苯氧基苯)与公式为:##STR3## 的羟基苯衍生物反应,其中Cat表示碱金属阳离子或铵阳离子,R.sub.4表示碱金属阳离子或铵阳离子或(C.sub.1 -C.sub.4)-烷基,反应温度在120℃至280℃之间。可选地,通过用酸处理来分离R.sub.4-位置中存在的烷基。