20621-29-8Relevant articles and documents
A fluoroalkyl (S - alkyl sulfonyl phenylimino) preparation of sulfonamides method (by machine translation)
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Paragraph 0083; 0092-0095; 0098, (2019/04/10)
The invention belongs to the field of preparation of fluorinated compounds, more specifically, relates to a fluoroalkyl (S - alkyl sulfonyl phenylimino) sulfonamide preparation method. The invention provides a method for synthesizing alkyl (S - alkyl sulfonyl phenylimino) of sulfonamides, sulfur valence state is + 4 (fluoroalkyl sulfonyl) of ([...] sulfonyl) imide ionic liquid or an alkali metal salt in a suitable organic solvent directly with the amine reagent in the reaction to synthesize sulfonyl imide salt of super delocalization important intermediate alkyl (S - alkyl sulfonyl phenylimino) sulfonamide. The method not only greatly shortening the preparation fluoroalkyl (S - alkyl sulfonyl phenylimino) sulfonamide route, and compared with before takes water as a solvent, the yield of the reaction and high purity, the operation step is short, the purification process is simple, the ionic liquid can be circulated and reused, environmental protection, water pollution-free. (by machine translation)
Transition-Metal-Free Electrophilic Fluoroalkanesulfinylation of Electron-Rich (Het)Arenes with Fluoroalkyl Heteroaryl Sulfones via C(Het)?S and S=O Bond Cleavage
Wei, Jun,Bao, Kun,Qi, Chengcheng,Liu, Yao,Ni, Chuanfa,Sheng, Rong,Hu, Jinbo
supporting information, p. 5528 - 5533 (2019/11/14)
A novel Ph2P(O)Cl-mediated direct fluoroalkanesulfinylation of electron-rich (het)arenes using fluoroalkyl heteroaryl sulfones as the RfSO source (Rf=C4F9, CF2Cl, CF2Br, and CF2COOEt) was developed. This is the first example where 2-HetSO2Rf performs as the RfSO synthon in organic synthesis via both C(Het)?S and S=O bond cleavage. (Figure presented.).
Preparation process of trifluoromethyl sulfinyl chloride
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Paragraph 0029-0035, (2017/07/19)
The invention provides a preparation process of trifluoromethyl sulfinyl chloride. The preparation process comprises the steps as follows: 1) a synthesis kettle is taken, and thionyl chloride is added; 2) thionyl chloride is heated until reflux and cooled to 0-5 DEG C, and sodium trifluoromethanesulfinate is fed; 3) the temperature is increased to 15-20 DEG C, distillation is performed, the steam is turned off and the temperature is reduced to 10 DEG C or lower when the temperature reaches 90-100 DEG C, and water is added to clean a distillation kettle; 4) the material is distilled into a rectifying still, the rectifying still starts to heat up, front cut fractions are collected after reflux for 3-5 hours, whether the material in the reflux pipe is transparent is observed when the temperature reaches 40-45 DEG C, and a finished product of trifluoromethyl sulfinyl chloride is collected if the material is transparent, and reflux is continued if the material is not transparent; 5) the finished product is stopped from being collected when the temperature reaches 45-50 DEG C, reflux is continued, and the finished product of trifluoromethyl sulfinyl chloride continues to be collected after the reflux temperature is reduced. The process is simple to operate, is green and has no pollutant discharge during preparation, is energy-saving, consumption-reducing and good in economic benefit, an adopted solvent is recyclable, obtained trifluoromethyl sulfinyl chloride has high purity and yield, and the production cost can be effectively reduced.
Facile synthesis of aryl- and alkyl-bis(trifluoromethylsulfonyl)methanes
Hasegawa, Aiko,Ishikawa, Takuo,Ishihara, Kazuaki,Yamamoto, Hisashi
, p. 1401 - 1410 (2007/10/03)
Various arylbis(trifluoromethylsulfonyl)methanes (1) have been synthesized by reacting the corresponding benzylic halides with sodium trifluoromethanesulfinate and then with triflic anhydride. In addition, when the aryl group of 1 is a pentafluorophenyl group, the nucleophilic para-substitution of the aryl group with alkyllithiums and sodium alkoxides occurs. This reaction is useful for the design of new Bronsted acids.
REAGENT AND PROCESS WHICH ARE USEFUL FOR GRAFTING A SUBSTITUTED DIFLUOROMETHYL GROUP ONTO A COMPOUND CONTAINING AT LEAST ONE ELECTROPHILIC FUNCTION
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, (2008/06/13)
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, and b) 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.
Reagent and process which are useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function
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, (2008/06/13)
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, and b) 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.