申请人:Tortelli Vito
公开号:US20070004940A1
公开(公告)日:2007-01-04
A process for preparing (per)fluorohalogenethers having general formula:
wherein:
A and A′, equal to our different from each other, are selected among Cl, Br, H; m=1, 2; n=0, 1; R
1
is a fluorinated substituent, preferably perfluorinated, selected from the following groups: C
1
-C
20
linear or branched alkylic; C
3
-C
7
cycloalkylic; aromatic, C
6
-C
10
arylalkyl; heterocyclic or C
5
-C
10
-alkylheterocyclic; preferably perfluoroalkyl; R′ is as defined in the application;
by reaction of carbonyl compounds having formula:
wherein:
R
1
and n are as above; u=0, 1; R′ is as defined in the application;
in liquid phase, with elemental fluorine and with olefinic compounds of formula:
CAF═CA′F
2
(III)
wherein A and A′ are as above, at temperatures from −120° C. to −20° C., preferably from −100° C. to −40° C., optionally in the presence of an inert solvent under the reaction conditions.
一种制备(per)氟卤代醚的方法,其一般式为:其中:A和A′相等或不同,选择自Cl、Br、H中的一种或多种;m=1、2;n=0、1;R1是氟代取代基,优选为全氟代取代基,选择自以下基团中:C1-C20线性或支链烷基;C3-C7环烷基;芳香族,C6-C10芳基烷基;杂环或C5-C10烷基杂环;优选为全氟烷基;R′如申请中所定义;通过将具有以下式的羰基化合物:其中:R1和n如上所述;u=0、1;R′如申请中所定义;在液相中与元素氟和具有以下式的烯烃化合物反应:CAF═CA′F2(III)其中A和A′如上,反应温度为-120℃至-20℃,优选为-100℃至-40℃,在反应条件下可选地存在惰性溶剂。