PROCESSES FOR PRODUCING 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE AND 2,3,3,3-TETRAFLUOROPROPENE
申请人:KAWAGUCHI Satoshi
公开号:US20110237846A1
公开(公告)日:2011-09-29
To provide processes for efficiently and economically producing 2-chloro-1,1,1,2-tetrafluoropropane (R244bb) and 2,3,3,3-tetrafluoropropene (R1234yf) in an industrially practical manner.
A process for producing 2-chloro-1,1,1,2-tetrafluoropropane, which comprises a chlorination step of reacting 1,2-dichloro-2-fluoropropane and chlorine in the presence of a solvent under irradiation with light to obtain 1,1,1,2-tetrachloro-2-fluoropropane, and a fluorination step of reacting the 1,1,1,2-tetrachloro-2-fluoropropane obtained in the chlorination step and hydrogen fluoride in the presence of a catalyst to obtain 2-chloro-1,1,1,2-tetrafluoropropane, and a process for producing 2,3,3,3-tetrafluoropropene, which comprises dehydrochlorinating it in the presence of a catalyst.
Two-step phosphorus-mediated substitution of hydroxy groups in selected primary alcohols for fluorinated alkyl or aryl substituents: the molecular structure of 1,1-bis(fluorosulfonyl)-1-fluoro-2-phenylethane
In an Arbuzov type reaction, amido phosphites (Et2N)2- PORand a broad range of halofluoro organic halides (X = Cl, Br) formed the corresponding alkylated derivatives R1–R2 [R1 = Bn, R2 = C(SO2F)3, CCl2F, CCl2CF3, CBr2F, C(CF3)3, C6F5; R1 = Et, CH2CF3, Me, R2 = CCl2CF3], whereas with FC(SO2F)3 and loss of SO2, BnCF(SO2F)2 was obtained, as shown by X-ray crystallography.
[EN] COMPOSITIONS AND METHODS FOR SYNTHESIS OF 2,3-DICHLORO-1,1,1,2-TETRAFLUOROPROPANE AND 2,3,3,3-TETRAFLUOROPROPENE<br/>[FR] COMPOSITIONS ET PROCÉDÉS DE SYNTHÈSE DE 2,3-DICHLORO-1,1,1,2-TÉTRAFLUOROPROPANE ET DE 2,3,3,3-TÉTRAFLUOROPROPÈNE
申请人:CHEMOURS CO FC LLC
公开号:WO2021003207A3
公开(公告)日:2021-02-11
McBee et al., Journal of the American Chemical Society, 1947, vol. 69, p. 946