申请人:Nippon Shokubai Co., Ltd., a Japan Corporation
公开号:US20010002425A1
公开(公告)日:2001-05-31
A process is provided which allows a 1,4-bis(difluoroalkyl)benzene derivative to be produced inexpensively by a simple procedure without requiring any special facility. This process comprises causing a compound (A) of the following formula (1):
1
wherein X
1
, X
2
, X
3
, and X
4
independently stand for an oxygen or sulfur atom, Y
1
and Y
2
independently stand for a group of the formula: —C
n
H
2n
—, in which n is 2 or 3, k is an integer in the range of 0 to 4, G stands for a halogen group, an alkyl group, a perfluoroalkyl group, or an alkoxy group, and m is an integer in the range of 0 to 4, to react with a fluorine-containing species, the molar ratio of the fluorine-containing species to compound (A) being in the range of 20-40. The process is carried out in the presence of a bromine-containing compound, which is in an amount of 2 to 3 equivalences to the amount of compound (A), in an organic solvent at −80° C. to 30° C., the final concentration of compound (A) being in the range of 3 to 30% by weight.
提供了一种工艺,可以通过简单的步骤而不需要任何特殊设备,以低成本生产1,4-双(二氟烷基)苯衍生物。该工艺包括使以下式(1)的化合物(A):1其中X1、X2、X3和X4独立地代表氧或硫原子,Y1和Y2独立地代表公式:—CnH2n—的基团,其中n为2或3,k为0至4范围内的整数,G代表卤素基团、烷基、全氟烷基或烷氧基,m为0至4范围内的整数,与含氟物种反应,含氟物种与化合物(A)的摩尔比在20-40范围内。在有机溶剂中,在−80℃至30℃的温度下,在化合物(A)的最终浓度在3-30%重量范围内的情况下,存在量为化合物(A)量的2至3当量的溴含有化合物的化合物存在下进行。