申请人:Rhone-Polenc Specialites Chimoues
公开号:US04816596A1
公开(公告)日:1989-03-28
A process for preparing substituted or unsubstituted trifluoroethoxy- or trifluoroethylthiobenzenes by reaction of a phenol or thiophenol, both of which may be substituted or unsubstituted, with a compound of the formula CF.sub.3 --CH.sub.2 --O--R', where R' is a moiety selected from the group consisting of trifluoroacetyl, methanesulfonyl, paratoluenesulfonyl, trichloromethanesulfonyl and chlorosulfonyl, in the presence of a strong alkaline base and a complexing agent of the formula: N--CHR.sub.1 --CHR.sub.2 --O--(CHR.sub.3 --CHR.sub.4 --O).sub.n --R.sub.5 ].sub.3 (II) wherein n is an integer from 0 to 10 (0 is less than or equal to n is less than or equal to 10), R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, are selected from the group consisting of a hydrogen atom and an alkyl moiety having from 1 to 4 carbon atoms, and R.sub.5 denotes an alkyl or cycloalkyl moiety having from 1 to 12 carbon atoms, a phenyl moiety or a moiety of the formula: --C.sub.m H.sub.2m --C.sub.6 H.sub.5 or C.sub.m H.sub.(2m+1) --C.sub.6 H.sub.4 --, where m is from 1 to 12.
一种制备取代或未取代的三氟乙氧基或三氟乙硫基苯的方法,包括将可能被取代或未取代的苯酚或硫代苯与公式CF.sub.3 --CH.sub.2 --O--R'的化合物反应,其中R'是选择自三氟乙酰基、甲磺酰基、对甲苯磺酰基、三氯甲磺酰基和氯磺酰基的基团,在强碱性基和配位剂的存在下,所述配位剂的公式为:N--CHR.sub.1 --CHR.sub.2 --O--(CHR.sub.3 --CHR.sub.4 --O).sub.n --R.sub.5 ].sub.3 (II),其中n是从0到10的整数(0小于或等于n小于或等于10),R.sub.1、R.sub.2、R.sub.3和R.sub.4,它们可以相同也可以不同,被选择自氢原子和具有1到4个碳原子的烷基基团,而R.sub.5表示具有1到12个碳原子的烷基或环烷基团、苯基或公式:--C.sub.m H.sub.2m --C.sub.6 H.sub.5或C.sub.m H.sub.(2m+1) --C.sub.6 H.sub.4 --的基团,其中m从1到12。