Method for producing fluorine-containing compound and fluorine-containing compound

A fluorine-containing compound represented by the following formula (A1) or (A2):

• G1-C(—Ra)(—Rb)—CH2-L Formula (A1)
• L-CH2—{C(—Ra)(—Rb)-G2-}nC(—Ra)(—Rb)—CH2-L Formula (A2)
• where, in the formula,
• Ra is a fluorine atom or a fluoroalkyl group, and when there are a plurality of Ra's, the Ra's may be the same as or different from each other,
• Rb is a hydrogen atom or a fluoroalkyl group, and when there are a plurality of Rb's, the Rb's may be the same as or different from each other,
• G1 is a monovalent group having a (poly)oxyfluoroalkylene chain, a hydrogen atom, an alkyl group, or a fluoroalkyl group,
• G2 is a divalent group having a (poly)oxyfluoroalkylene chain, a single bond, an alkylene group, or a fluoroalkylene group,
• L is a sulfonate group, and a plurality of L's may be the same as or different from each other in the formula (A2), and
• n is 0 or 1.

A fluorine-containing compound represented by the following formula (C1) or (C2):

• G1-C(—Ra)(—Rb)—CH2—R Formula (C1)
• R—CH2—{C(—Ra)(—Rb)-G2-}nC(—Ra)(—Rb)—CH2—R Formula (C2)
• where, in the formula,
• Ra is a fluorine atom or a fluoroalkyl group, and when there are a plurality of Ra's, the Ra'S may be the same as or different from each other,
• Rb is a hydrogen atom or a fluoroalkyl group, and when there are a plurality of Rb's, the Rb's may be the same as or different from each other,
• G1 is a monovalent group having a (poly)oxyfluoroalkylene chain, a hydrogen atom, an alkyl group, or a fluoroalkyl group,
• G2 is a divalent group having a (poly)oxyfluoroalkylene chain, a single bond, an alkylene group, or a fluoroalkylene group,
• R is a hydrocarbon group which may have a substituent or a heteroatom in the carbon chain, and
• n is 0 or 1.