申请人:ASAHI GLASS COMPANY LIMITED
公开号:US20040267053A1
公开(公告)日:2004-12-30
The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
Namely, it is a process for producing a fluorinated ketone of the following formula (5), which comprises reacting a compound of the following formula (3) having a fluorine content of at least 30 mass %, with fluorine in a liquid phase to obtain a compound of the following formula (4), and then, subjecting the ester linkage of the compound of the formula (4) to a dissociation reaction:
R
C
COOCHR
A
R
B
(3)
R
CF
COOCFR
AF
R
BF
(4)
R
AF
R
BF
C═O (5)
wherein each of R
A
and R
AF
are each a monovalent organic group such as an alkyl group, or R
A
and R
B
may be bonded to each other to form a bivalent organic group such as an alkylene group, R
AF
and R
BF
are a monovalent organic group such as a perfluoroalkyl group formed by fluorination of R
A
and R
B
, or they are bonded to each other to form a bivalent organic group such as a perfluoroalkylene group, and R
C
and R
CF
are each a monovalent organic group such as a perfluoroalkyl group which may contain an etheric oxygen atom.
本发明提供了一种可以通过简短的工艺步骤生产各种结构的氟酮的过程,并可用作工业生产过程。即,本发明提供了一种制备以下式(5)的氟酮的过程,包括将具有至少30质量%氟含量的以下式(3)的化合物与液相中的氟反应以得到以下式(4)的化合物,然后将式(4)的酯键进行解离反应:RCCOOCHRARB(3)RCFCOOCFRAFRBF(4)RAFRBFC═O (5)其中,RA和RAF均为一价有机基团,例如烷基,或RA和RB可以连接在一起形成双价有机基团,例如烷基烷基,RAF和RBF是由RA和RB氟化而形成的一价有机基团,例如全氟烷基,或它们连接在一起形成双价有机基团,例如全氟烷基烷基,RC和RCF均为一价的有机基团,例如可能含有醚氧原子的全氟烷基。