PROCESS FOR PRODUCING SUBSTITUTED UNSATURATED SIX-MEMBERED RING COMPOUNDS FROM PHENOL DERIVATIVES
申请人:HIRAI, Hidefumi
公开号:EP0173748A1
公开(公告)日:1986-03-12
Various useful p-substituted phenol derivatives can be advantageously obtained by reacting a phenol compound with an organic halide selected from the group consisting of haloforms, tetrahalogenocarbons, and substituted or unsubstituted allyl halides in the presence of an alkali metal hydroxide using as catalyst immobilized cyclodextrin crosslinked through its hydroxy groups with a divalent hydrocarbyl group having free valences at both ends, optionally being substitued by a substituent selected from among an alkyl group, a halogen atom, and a hydroxy group, and optionally having at least one selected from the group constituting of an oxygen atom, a sulfur atom, and phenylene between at least part of adjacent carbon atoms. The used cyclodextrin catalyst can be recovered with ease and no loss, and can be repeatedly used for this process without reducing the yield and selectivity of the phenol derivative.
在碱金属氢氧化物存在下,使用通过羟基与二价烃基交联的固定化环糊精作为催化剂,使苯酚化合物与选自卤代烃、四卤代烃和取代或未取代的烯丙基卤化物组成的组中的有机卤化物反应,可有利地获得各种有用的对取代苯酚衍生物、可选择被选自烷基、卤素原子和羟基的取代基取代,并可选择在至少部分相邻碳原子之间有至少一个选自氧原子、硫原子和亚苯基的取代基。使用过的环糊精催化剂可以很容易地回收,不会造成任何损失,并且可以重复用于该工艺,而不会降低苯酚衍生物的产率和选择性。