METHODS FOR PREPARING FLUORINATED CARBOXYLIC ACID AND ITS SALT

• Main Authors: OLEG SHYSHKOV, KIM M VOGEL, JOLANTA IGNATOWSKA, DENNIS E VOGEL, GERD-VOLKER ROESCHENTHALER, TILMAN C ZIPPLIES, KLAUS HINTZER, MIGUEL A GUERRA
• Format: Patent
• Language: English; Japanese
• Published: 21.05.2015
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMISTRY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY; ORGANIC CHEMISTRY

PROBLEM TO BE SOLVED: To provide an oxidation process for preparing a fluorinated carboxylic acid, which is inexpensive and efficient and has readily available starting materials, making it useful on an industrial scale.SOLUTION: A method for preparing a fluorinated carboxylic acid and its salt comprises exposing a fluorinated alcohol of the formula (A) defined by A-CH-OH to at least one first oxidizing agent and at least one second oxidizing agent to produce a highly fluorinated carboxylic acid or its salt of the formula (B) defined by A-COOM. [In the formulas, Mrepresents a cation; and A represents a residue such as Rf-[O]-CX"Y"-[O]-CX'Y'-[O]-CXY-. (Rf represents a fluorinated alkyl residue which may or may not contain catenary O; p, m and n are each independently 1 or 0; and X, X', X", Y, Y' and Y" are each H, F, CFor CF.)] 【課題】安価で効率的であり、入手が容易な開始物質を有することで工業的規模で行うのに有用な、フッ素化カルボン酸を調製する酸化プロセスの提供。【解決手段】フッ素化カルボン酸及びその塩を調製するための方法であって、式（Ａ）のフッ素化アルコールを、少なくとも１種類の第１の酸化剤及び少なくとも１種類の第２の酸化剤に曝露することにより、式（Ｂ）の高度にフッ素化されたカルボン酸を得る工程又はその塩を生成する工程を含む方法。式（Ａ）：Ａ−ＣＨ２−ＯＨ，式（Ｂ）：Ａ−ＣＯＯ−Ｍ＋［Ｍ＋はカチオン；Ａは残基：Ｒｆ−［Ｏ］ｐ−ＣＸ"Ｙ"−［Ｏ］ｍ−ＣＸ'Ｙ'−［Ｏ］ｎ−ＣＸＹ−等（ＲｆはカテナリーＯを含有しても良いフッ素化アルキル残基；ｐ、ｍ及びｎは各々独立に１又は０；Ｘ、Ｘ'、Ｘ''、Ｙ、Ｙ'及びＹ"はＨ、Ｆ、ＣＦ３又はＣ２Ｆ５）］【選択図】なし