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AssigneeAsahi Glass Company, Limited
InventorsKunio Watanabe, Takashi Okazoe, Masahiro Ito, Shin Tatematsu, Hiroki Kamiya, Eisuke Murotani
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A process for efficiently producing an acyl fluoride and a carboxylic acid salt while inhibiting side reactions. RA[OCH(CH3)CH2]nOH (1) and XCORB (RA and RB each is a group which upon fluorination becomes a perfluoroalkyl group, X is a halogen atom, and n is an integer of from 1 to 10) (2) are reacted to form an ester compound (3); the compound (3) is fluorinated in a liquid phase; and the ester bond of the fluorinated compound (4) is cleaved to obtain a perfluoroacyl fluoride (5). Further, this perfluoroacyl fluoride (5) is hydrolyzed and then reacted with ammonia or an alkali metal hydroxide to obtain a carboxylic acid salt (7).
A process for producing a compound of the following formula (5), or a compound of the following formula (5) and a compound of the following formula (6), which comprises reacting a compound of the following formula (1) and a compound of the following formula (2) to form a compound of the following formula (3), fluorinating in a liquid phase the compound of the formula (3) thus formed, to obtain a compound of the following formula (4), and then cleaving an ester bond in the compound of the formula (4):
A compound of the following formula (4A):
A compound of the following formula (7A):
Dependencies are inferred from the claim text.