[EN] METHOD OF PREPARING HIGHLY FLUORINATED CARBOXYLIC ACIDS AND THEIR SALTS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDES CARBOXYLIQUES HAUTEMENT FLUORÉS ET DE LEURS SELS
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2011066156A1
公开(公告)日:2011-06-03
A method for preparing highly fluorinated carboxylic acids and theirs salts and the precursors thereof comprising subjecting a highly fluorinated olefin of the general formula (I) : Rf(O)n-(CF2)m-CF=CF2 to a derivative of formic acid according to the general formula (II) HCOR in the presence of a radical initiator to form carboxylic acid precursor in the form of an O-ester, S-ester or an amide adduct of the general formula (III) and hydrolysing the adduct of formula (III) Rf-On-(CF2)m-CFH-CF2-COR to form the carboxylic acid or its salt of the general formula (IV) RfOn-(CF2)m-CFH-CF2-COO-M+ wherein in formulae (II) and (III) R represents a residue O-M+, S-M+, OR`, SR' or NR`R`` wherein R' and R'' are independent of each other linear or branched or cyclic aliphatic or aromatic residues that contain at least one carbon atom and that do not have an alpha-H-atom and Rf represents H or a perfluorinated or partially fluorinated, linear, branched, aliphatic or aromatic, carbon atoms containing residue or hydrogen, n is 1 or 0, m represents an integer between 0 and 6 and M+ represents a cation including H+.
一种制备高度氟化羧酸及其盐和前体的方法,包括将通式(I)的高度氟化烯烃:Rf(O)n-(CF2)m-CF=CF2与通式(II)的甲酸衍生物在自由基引发剂的存在下反应,形成羧酸前体,其形式为通式(III)的O-酯,S-酯或酰胺加合物,并水解式(III)的加合物Rf-On-(CF2)m-CFH-CF2-COR,形成通式(IV)的羧酸或其盐:RfOn-(CF2)m-CFH-CF2-COO-M+,其中在式(II)和(III)中,R代表残基O-M+,S-M+,OR',SR'或NR'R'',其中R'和R''独立于彼此,是线性或支链或环状的脂肪族或芳香族残基,其中至少含有一个碳原子,且不具有α-H-原子,Rf代表H或全氟化或部分氟化的线性,支链,脂肪族或芳香族,含碳原子的残基或氢,n为1或0,m代表0至6之间的整数,M+代表包括H+的阳离子。