专利号:US-5859288-A 优先权日:1995-03-24 标 题:Reagent and process for the synthesis of oxysulphide-containing fluorine-containing organic derivatives 发明人:FORAT GERARD; MAS JEAN-MANUEL; SAINT-JALMES LAURENT 权利人:RHONE POULENC CHIMIE 摘要:The invention relates to a reagent which is useful for the synthesis of oxysulphide-containing fluorine-containing organic derivatives by reacting with an oxide of sulphur, especially sulphur dioxide, characterized in that it comprises: a) a fluorocarboxylic acid of formula Ew-CF2-COOH where Ew is an electron-withdrawing group or atom which is at least partially salified by an organic or inorganic cation, and b) an aprotic polar solvent; and in that the content of releasable protons carried by its various components, including their impurities, is at most equal to half the initial molar concentration of the said fluorocarboxylic acid. This reagent can be used by heating in order to form fluorine-containing sulphinic or sulphonic acids.
专利号:US-2014135497-A1 优先权日:2012-11-13 标题 :Synthesis of 2,4-dichloro-5-trifluoromethyl-pyrimidine 发明人:LIU LI; AKALAY DENIZ; DONG WEITONG; FENG JIANQING; HEMP CHRISTIAN WOLFGANG; LU JUN; XIE LE; YANG JINSONG 权利人:LIU LI; AKALAY DENIZ; DONG WEITONG; FENG JIANQING; HEMP CHRISTIAN WOLFGANG; LU JUN; XIE LE; YANG JINSONG; BOEHRINGER INGELHEIM INT 摘要:This invention relates to a novel method for the synthesis of 2,4-dichloro-5-trifluoromethyl-pyrimidine useful as intermediate in the manufacture of pharmaceutically active ingredients.
专利号:WO-2024000920-A1 优先权日:2022-06-28 标题 :Method for preparing β-trifluoromethylenamine compound on basis of organic dye catalysis 发明人:CHEN XIAOYUN; TANG YISONG; ZHANG XIAOTONG; HUANG MINGYANG; QI GUANGJIE; XIANG XINRAN 权利人:UNIV JIANGSU SCIENCE & TECH 摘要:Disclosed in the present invention is a method for preparing a β-trifluoromethylenamine compound on the basis of organic dye catalysis. The present invention belongs to the technical fields of the synthesis of medicines, pesticide products and material intermediates. The β-trifluoromethylenamine compound has a structure as represented by formula (I). The preparation method of the present invention comprises: under the irradiation of environment-friendly, green and economic visible light, using a catalytic amount of a commercial organic dye Na2-Eosin Y as a photocatalyst, using CF3SO2Na which is cheap, easily available, stable and simple and convenient to operate as a trifluoromethyl source, using Na2CO3 as an additive, and using tert-butyl hydroperoxide as an initiator. The reaction has mild conditions and is insensitive to air and water, and the operation is simple and convenient, the reaction efficiency is high, and the target product is easy to purify. In addition, the present invention has a a wide reaction substrate range and good functional group tolerance, and most of the target product compounds can be obtained with good to significant yields.
专利号:US-6506286-B1 优先权日:1995-02-24 标题 :Reactant, compound and process for the perfluoroalkylation of a nucleophile, and the derivatives obtained 发明人:LANGLOIS BERNARD; ROQUES NICOLAS; WAKSELMAN CLAUDE; TORDEUX MARC; FORAT GERARD 权利人:RHODIA CHIMIE SA 摘要:A reagent comprising a compound of formula (I): R f —M(X)(Z) n —Y—R, wherein R is a hydrocarbon radical advantageously having at most 10 carbon atoms and being selected from alkyls and aryls; R f is a radical of formula II: R 1 —(CΞ 2 ) m —CF 2 —, where R 1 is a fluorine or chlorine atom or a carbon radical, m is 0 or a integer from 0-12, and each Ξ, which may be the same or different, is a chlorine or preferably fluorine atom, with the proviso that when m is 0, R 1 is electroattractive, preferably a fluorine atom; n is 0 or 1; M is a non-metal selected from carbon and chalcogens with an atomic number than oxygen; and each of X, Y and Z, which are the same or different, is a chalcogen; as well as a generator, for consecutive or simultaneous addition. The reagent is useful for organic synthesis.
专利号:US-6464895-B2 优先权日:1995-03-24 标 题 :Reagent and process which are useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function 发明人:FORAT GERARD; MAS JEAN-MANUEL; SAINT-JALMES LAURENT 权利人:RHODIA CHIMIE SA 摘要:The invention relates to a nucleophilic reagent which is useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function, or for the synthesis of oxysulphide-containing and fluorine-containing organic derivatives, wherein said reagent comprises:a) a fluorocarboxylic acid of formula Ew-CF2-COOH where Ew represents an electron-withdrawing atom or group, at least partially salified with an organic or inorganic cation, andb) a polar aprotic solvent;and in that the content of releasable protons carried by its various components, including their impurities, is at most equal to half the initial molar concentration of the said fluorocarboxylic acid.A synthetic process uses this reagent by heating in order to graft a substituted difluoromethyl group onto various compounds.
专利号:US-6486351-B1 优先权日:1998-09-14 标 题 :Method for condensation of aromatic derivative(s) and a sulphinic derivative 发明人:SAINT-JALMES LAURENT; TORDEUX MARC; WAKSELMAN CLAUDE 权利人:RHODIA CHIMIE SA 摘要:The invention concerns a method for the condensation of aromatic derivative(s) or a sulphinic derivative by a perhalogenated, advantageously perfluorinated, carbon atom. Said method is characterized in that it consists in subjecting said sulphinic derivative and said aromatic derivative to the action of a strong acid whereof the pKa is not more that 0. The invention is applicable to organic synthesis.