申请人:Solvay Solexis S.p.A.
公开号:US20040030146A1
公开(公告)日:2004-02-12
A process for preparing (per)fluorohalogenethers having general formula (I):
(R)
n
C(F)
m
OCAF—CA′F
2
(I)
wherein:
A and A′, equal to or different the one from the other, are Cl or Br or one is selected from A and A′ and hydrogen and the other is halogen selected from Cl, Br; R═F, or a fluorinated, preferably perfluorinated, substituent, selected from the following groups: linear or branched C
1
-C
20
alkyl more preferably C
1
-C
10
; C
3
-C
7
cycloalkyl; aromatic, C
6
-C
10
arylalkyl, alkylaryl; C
5
-C
10
heterocyclic or alkylheterocyclic; when R is fluorinated or perfluorinated alkyl, cycloalkyl, arylalkyl, alkylaryl, it can optionally contain in the chain one or more oxygen atoms;
when R is fluorinated it can optionally contain one or more H atoms and/or one or more halogen atoms different from F: n is an integer and is 1 or 2; m=3-n;
by reaction of carbonyl compounds having formula (II):
(R)
p
C(F)
q
(O) (II)
wherein:
p is an integer and is 1 or 2; q is an integer and is zero or 1, R is as above;
in liquid phase with elemental fluorine and with olefinic compounds having formula (III):
CAF═CA′F (III)
wherein A and A′ are as above, at temperatures in the range from −120° C. to −20° C.
一种制备具有一般式(I)的(全)氟卤代醚的方法:
(R)
n
C(F)
m
OCAF—CA′F
2
(I)
其中:
A和A′,相等或不同于彼此,为Cl或Br或一个从A和A′中选择的氢和另一个为Cl、Br中选择的卤素;R═F,或者为以下组中选择的氟化的、优选为全氟化的取代基:线性或支链的C
1
-C
20
烷基,更优选为C
1
-C
10
;C
3
-C
7
环烷基;芳香族,C
6
-C
10
芳基烷基,烷基芳基;C
5
-C
10
杂环或烷基杂环;当R为氟化或全氟化的烷基、环烷基、芳基烷基、烷基芳基时,它可以在链中选择性地含有一个或多个氧原子;
当R为氟化时,它可以选择性地含有一个或多个H原子和/或一个或多个不同于F的卤素原子:n为整数,为1或2;m=3-n;
通过将具有式(I)的羰基化合物与具有式(II)的烯烃化合物在液相中与氟气和具有式(III)的烯烃化合物反应:
(R)
p
C(F)
q
(O) (II)
其中:
p为整数,为1或2;q为整数,为零或1,R如上所述;
其中A和A′如上所述,在温度范围从−120°C到−20°C。