申请人:Kondo Norihisa
公开号:US20090030228A1
公开(公告)日:2009-01-29
The present invention provides a process for producing highly pure fluoro-compounds by making use of less costly and readily handleable N-(2-chloro-1,1,2-trifluoroethyl)diethylamine. The process produces little or no chlorinated by-products.
Specifically the present invention provides a process for producing a fluoro-compound, comprising fluorinating an alcohol derivative represented by the following general formula (1):
R
1
R
2
R
3
COH (1)
(wherein R
1
represents a hydrogen atom, a substituted or unsubstituted alkyl group, aryl group, alkylcarbonyl group, alkoxycarbonyl group, arylcarbonyl group or aryloxycarbonyl group; and R
2
and R
3
are each independently a substituted or unsubstituted alkyl group, aryl group, alkylcarbonyl group, alkoxycarbonyl group, arylcarbonyl group or aryloxycarbonyl group, wherein at least two of R
1
, R
2
and R
3
may together form part of a ring structure, either with or without a heteroatom) with N,N-diethyl-2-chloro-1,1,2-trifluoroethylamine to form a fluoro-compound represented by the following general formula (2):
R
1
R
2
R
3
CF (2)
(wherein R
1
, R
2
and R
3
are as defined above), the process being characterized in that an alcohol derivative represented by the following general formula (3):
R
4
OH (3)
(wherein R
4
represents a substituted or unsubstituted alkyl group or aryl group) is added to the reaction system.
本发明提供了一种利用成本较低且易于处理的N-(2-氯-1,1,2-三氟乙基)二乙胺生产高纯度氟化合物的方法。该方法几乎不产生氯化副产物。具体而言,本发明提供了一种生产氟化合物的方法,包括将由下述通式(1)表示的醇衍生物进行氟化:R1R2R3COH (其中R1代表氢原子、取代或未取代的烷基、芳基、烷基羰基、烷氧羰基、芳基羰基或芳氧羰基;R2和R3分别独立地代表取代或未取代的烷基、芳基、烷基羰基、烷氧羰基、芳基羰基或芳氧羰基,其中R1、R2和R3中的至少两个可以共同形成环结构,带有或不带有杂原子)与N,N-二乙基-2-氯-1,1,2-三氟乙基胺反应,形成由下述通式(2)表示的氟化合物:R1R2R3CF (其中R1、R2和R3如上所定义),其特征在于向反应体系中加入由下述通式(3)表示的醇衍生物:R4OH (其中R4代表取代或未取代的烷基或芳基)。