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    • 50. 发明专利
    • METHOD FOR PRODUCING FLUORINE-CONTAINING COMPOUND
    • CA2415620C
    • 2009-09-08
    • CA2415620
    • 2001-07-11
    • ASAHI GLASS CO LTD
    • OKAZOE TAKASHIWATANABE KUNIOOKAMOTO HIDEKAZUSHIRAKAWA DAISUKEITO MASAHIROTATEMATSU SHINIWAYA MASAO
    • C07C69/708C07C45/54C07C49/175C07C51/58C07C55/40C07C59/135C07C67/287C07C67/307C07C69/63
    • 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.