C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/708 (2006.01) C07C 45/54 (2006.01) C07C 49/175 (2006.01) C07C 67/287 (2006.01) C07C 67/307 (2006.01) C07C 69/63 (2006.01)
Patent
CA 2415620
The present invention provides a method for obtaining a compound useful as a raw material for various fluororesins in high yield by a short process by using a starting material which is inexpensive and readily available. Namely, the present invention is characterized by reacting the following compound (1) with the following compound (2) to produce the following compound (3) having a fluorine content of at least 30 mass%, fluorinating the compound (3) in a liquid phase to produce the following compound (4), followed by a cleavage reaction of E F of the compound (4) to obtain a compound (5) and/or a compound (6): E1-R A-E1 (1) E2-R B (2) R B-E-R A-E-R B (3) R BF-E F-R AF-E F-R BF (4) E F1-R AF-E F1 (5) R BF-E F2 (6) wherein R A is a fluorine-containing bivalent organic group which is the same as R AF, or a bivalent organic group which will be converted to R AF by a fluorination reaction, and R B is a monovalent organic group which is the same as R BF, or a monovalent organic group which will be converted to R BF by a fluorination reaction, R AF is a fluorine-containing bivalent organic group which is the same as or different from R A, and when different, it is a group having R A fluorinated, R BF is a fluorine-containing monovalent organic group which is the same as or different from R B, and when different, it is a group having R B fluorinated, E1 and E2 are reactive groups which will react to each other to form a bivalent connecting group (E), E is a bivalent connecting group formed by the reaction of E1 and E2, E F is a group which is the same as E, or a group having E fluorinated, provided that at least one selected from R AF, R BF and E F, is a group formed by a fluorination reaction, and each of E F1 and E F2 which are independent from each other, is a group formed by cleavage of E F.
L'invention concerne un procédé de préparation d'un composé renfermant du fluor, caractérisé en ce qu'on fait réagir un composé (1) avec un composé (2), en vue de produire un composé (3) possédant une teneur en fluor égale ou supérieure à 30 % en masse, le composé (3) étant fluoré en phase liquide, de manière à produire un composé (4), et un composé (5) et/ou un composé (6) étant préparés par réaction de clivage d'une liaison ester du composé (4): HOCH2-R<A>-CH2OH (1), XCOR<B> (2), R<B>COOCH2-R<A>-CH2OCOR<B> (3), R<BF>COOCH2-R<AF>-CF2OCOR<BF> (4), FCO-R<AF>-COF (5), R<BF>-COF (6).
Ito Masahiro
Iwaya Masao
Okamoto Hidekazu
Okazoe Takashi
Shirakawa Daisuke
Asahi Glass Company Limited
Smart & Biggar
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