申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara RT
公开号:US04304938A1
公开(公告)日:1981-12-08
3-Phenoxybenzene derivatives are prepared by a method which comprises the steps of(a) chlorinating benzaldehyde with chlorine gas in the presence of a hydrocarbon and a Lewis acid catalyst to obtain 3-chlorobenzaldehyde; (b) reacting the 3-chlorobenzaldehyde with ethylene glycol to obtain 2-(3-chlorophenyl)-1,3-dioxolane; (c) etherifying said dioxolane with an alkali phenolate to yield the intermediate 2-(3-phenoxyphenyl)-1,3-dioxolane and converting this intermediate to the corresponding aldehyde, cyanohydrin, sulfonic acid salt or oxime derivative.
3-Phenoxybenzene衍生物是通过以下方法制备的:(a) 在碳氢化合物和Lewis酸催化剂的存在下,用氯气氯化苯甲醛以获得3-氯苯甲醛;(b) 将3-氯苯甲醛与乙二醇反应以获得2-(3-氯苯基)-1,3-二噁烷;(c) 将该二噁烷与一种碱性酚酸酯化合物醚化,得到中间体2-(3-苯氧基苯基)-1,3-二噁烷,并将该中间体转化为相应的醛、氰水合物、磺酸盐或肟衍生物。