摘要:
A process for efficiently producing an acyl fluoride and a carboxylic acid salt while inhibiting side reactions. RAnullOCH(CH3)CH2nullnOH (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).
摘要:
The present invention produces an unsaturated compound (Formula 2) useful as a fluororesin starting material and the like by using a compound of the Formula 1 as a starting material. That is, the present invention provides a method for preparing a compound expressed by CRbRcnullCRdRe (Formula 2) such as CF3CF2CF2OCFnullCF2 by pyrolyzing a compound having at least one partial structure expressed by nullCOOCF2CRbRcnullCXRdRe (Formula 1) such as CF3CF2CF2OCF(CF3)COOCF2CF(CF3)OCF2CF2CF3, wherein Rb to Re are a hydrogen atom, a halogen atom or a monovalent organic group unchangeable by pyrolysis reaction.
摘要:
The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RACH2OH is reacted with Compound II such as XCORB to form Compound III such as RACH2OCORB, followed by fluorination in a liquid phase to form Compound IV such as RAFCF2OCORBF, which is converted to Compound V such as RAFCOF and/or Compound VI such as RBFCOF. RA is an alkyl group or the like, RB is a perhalogenoalkyl group or the like, RAF and RBF are fluorinated RA and RB, and X is halogen.
摘要:
The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the following formula (5), which comprises reacting a compound of the following formula (3) having a fluorine content of at least 30 mass %, with fluorine in a liquid phase to obtain a compound of the following formula (4), and then, subjecting the ester linkage of the compound of the formula (4) to a dissociation reaction:RCCOOCHRARBnullnull(3)RCFCOOCFRAFRBFnullnull(4)RAFRBFCnullOnullnull(5)wherein each of RA and RAF are each a monovalent organic group such as an alkyl group, or RA and RB may be bonded to each other to form a bivalent organic group such as an alkylene group, RAF and RBF are a monovalent organic group such as a perfluoroalkyl group formed by fluorination of RA and RB, or they are bonded to each other to form a bivalent organic group such as a perfluoroalkylene group, and RC and RCF are each a monovalent organic group such as a perfluoroalkyl group which may contain an etheric oxygen atom.
摘要:
A fluorinated polyvalent carbonyl compound is produced by an economically advantageous method from inexpensive materials without requiring a complicated synthetic process step. Namely, the present invention comprises reacting a polyvalent alcohol having at least two kinds of alcohol skeletons selected among a primary alcohol, a secondary alcohol and a tertiary alcohol, with an acid halide to obtain a polyvalent ester compound, fluorinating it in a liquid phase to obtain a perfluorinated polyvalent ester compound, and cleaving the ester bonds derived from primary and secondary alcohols in the perfluoropolyvalent ester compound to obtain a fluorinated polyvalent carbonyl compound.
摘要:
A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl group-containing compound, and a polymer obtainable by polymerizing the sulfonyl group-containing polymerizable monomer, are provided. A compound (3) is fluorinated to form a compound (4), and then, the compound (4) is subjected to a decomposition reaction to produce a compound (5). A preferred compound (5-1) of the compound (5) is thermally decomposed to produce a compound (7-1) having a high polymerization reactivity. 1 wherein RA is a bivalent organic group such as a fluoroalkylene group, RAF is a group having RA fluorinated, or the same group as RA, each of RB to RD which are independent of one another, is a hydrogen atom, etc., each of RBF to RDF is a fluorine atom, etc., RE is a monovalent organic group, REF is a group having RE fluorinated, or the same group as RE, E is a bivalent connecting group, EF is the same group as E, or a group having E fluorinated, EF1 is a group formed by scission of EF, each of X1 to X3 is a hydrogen atom, etc., and each of X1F to X3F is a fluorine atom, etc.
摘要:
A novel fluoropolymer which can be an optical resin material having a low refractive index and excellent heat resistance, and a novel fluorinated diene compound having two unsaturated bonds, capable of presenting such a fluoropolymer, are presented. Further, by virtue of the low refractive index and excellent heat resistance, the polymer presents a high performance optical transmitter and a plastic optical fiber. A fluorinated diene compound represented by CF2nullCFCF(ORf)CF2OCFnullCF2 (wherein Rf is a perfluoroalkyl group such as a trifluoromethyl group), and a fluoropolymer thereof. Further, an optical transmitter made by using such a fluoropolymer, and a plastic optical fiber having a core comprising such a fluoropolymer and a fluorinated low molecular compound contained therein as a refractive index-increasing agent.
摘要:
The present invention provides a method for producing industrially useful fluorine-containing compounds such as a fluorinated ester compound and an acid fluoride compound. Namely, the present invention resides in a method for producing a fluorinated ester compound, which comprises fluorinating an ester compound which is an ester of a compound having hydroxyl group(s) with a compound having acyl fluoride group(s) and which has a structure which can be fluorinated, in a liquid phase to produce a fluorinated ester compound, wherein the fluorination is carried out in the form of a liquid mixture of the ester compound and the compound having acyl fluoride group(s).
摘要:
The present invention provides a production method to effectively obtain a product in a yield equal to or higher than an objective level, by accurately analyzing the amount of a fluorinated ester compound at the time of its production, or by accurately analyzing the consumption amount or the produced amount of the product or the fluorinated ester compound at the time of chemical conversion of the fluorinated ester compound. Namely, it is the method for producing a fluorinated ester compound by a chemical reaction of a raw material compound, wherein the chemical reaction is carried out until the yield of the fluorinated ester compound as obtained by gas chromatography by using a non-polar column reaches a predetermined yield.