Detail of "755-73-7"

CAS Number:
755-73-7
Name:
Propanoic acid,2,2,3,3-tetrafluoro-3-methoxy-, methyl ester
Molecular Structure:
Formula:
C₅H₆F₄O₃
Molecular Weight:
175.06
Synonyms:
Propionicacid, 2,2,3,3-tetrafluoro-3-methoxy-, methyl ester (7CI,8CI);Methyl2,2,3,3-tetrafluoro-3-methoxypropionate;Methyl 3-methoxyperfluoropropionate;Methyl 3-methoxytetrafluoropropionate;methyl 2,2,3,3-tetrafluoro-3-methoxypropanoate;
Density:
1.331 g/cm³
Boiling Point:
157.8 °C at 760 mmHg
Flash Point:
48.5 °C

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methyl 2,2,3,3-tetrafluoro-3-methoxypropionate

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Polyfluoroallyloxy compounds: Polyfluoroallyloxy compounds. (du Pont de Nemours, E. I., and Co. , USA). Israeli IL 59256 A1 15 Jun 1983, 36 pp. Addn.Some commonly used reagents like 755-73-7 and 78900-65-9 are used in this experiment. to Israeli 59,256. (English). (Israel). CODEN: ISXXAQ. CLASS: IC: C07C043-17; C07C043-225; C07C049-225; C07C059-58. APPLICATION: IL 80-59256 29 Jan 1980. PRIORITY: IL 77-53504 1 Dec 1977; US 79-20354 14 Mar 1979. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) The title compds., useful as monomers for fluoropolymers, have the general structure CF2:CXCF2OR, where X = Cl, F; R = CFR1R2 or CF(R3)2; R1 = F, CF3; R2 = linear or branched optionally substituted perfluoroalkyl; and R3 = CF2CN, CF2COF, or CF2CO2H. Thus, MeOCF2CF2CO2Me [755-73-7] in Et2O was treated with NH3 at 0°, and stirred at 25° overnight to give MeOCF2CF2CONH2 [77946-87-3], which was dissolved in diglyme, stirred at -10°, mixed with pyridine and (CF3CO)2O, and stirred 2 h at 25° to give MeOCF2CF2CN (I) [77946-88-4]. I was treated with SO3, stirred 2 h, refluxed 4 h, and distd. to give MeSO3F [421-20-5] and FCOCF2CN (II) [77946-96-4]. II was mixed with KF in diglyme at -10°, stirred 30 min at 0°, stirred with CF2:CFCF2OSO2F [67641-28-5] at 0°, stirred 4 h at 0-5°, and stirred 1 h at 25° to give CF2:CFCF2OCF2CF2CN [78900-57-9]. .