FLUORINE-CONTAINING COMPOUND PRODUCTION PROCESS Russian patent published in 2005 - IPC

FIELD: industrial organic synthesis.

SUBSTANCE: invention provides improved process for production of a fluorine-containing compound useful as starting material for manufacture of a variety of fluoropolymers with high output when performing short process and using inexpensive and easily accessible chemicals. Process comprises: (i) interaction of indicated below compound 1 with indicated below compound 2 to form indicated below desired compound 3, which is a compound, wherein content of fluorine is at least 30 wt % and which has hydrogen atom or multiple bond capable of being fluorinated; and (ii) liquid-phase fluorination of compound 3 to give indicated below compound 4 followed by (iii) cleaving group E^F in compound 4 to produce compound 5 and compound 6: E¹-R^A-E¹ (1), E²-R^B (2), R^B-E-R^A-E-R^B (3),
R^BF-E^F-R^AF-E^F-R^BF (4), E^F1-R^AF-E^F1 (5),
and R^BF-E^F2 (6), where R^AF represents fluorine-containing bivalent saturated, linear or branched hydrocarbon group optionally containing halogen atom other than fluorine and optionally containing one or several ether oxygen atoms; R^A represents group, which is the same as group R^AF or bivalent organic group capable of being converted into group R^AF using fluorination reaction; R^BF represents fluorine-containing polyvalent saturated, linear or branched hydrocarbon group optionally containing halogen atom other than fluorine and optionally containing one or several ether or carbonyl oxygen atoms; R^B represents group, which is the same as group R^BF or polyvalent organic group capable of being converted into group R^BF using fluorination reaction; E¹ and E² are such that, when group E¹ is -CH₂OH or Q¹-CH₂OH group, then group E² is -COX or -SO₂X group and, when group E² is -CH₂OH or -Q²-CH₂OH group, then group E¹ is -COX or -SO₂X group, where X is halogen atom and Q¹ and Q² may be identical or different and represent -CH(CH₃)- or -CH₂CH₂- group; E represents group -CH₂OCO-, -CH₂OSO₂-, -Q¹-CH₂OCO-, -Q²-CH₂OCO-, -Q¹-CH₂OSO₂-, or -Q²-CH₂OSO₂-; E^F represents group, which is the same as group E or group obtained by fluorination if group E on conditions that at least one group R^AF, R^BF, or E^F is a group formed by fluorination reaction and groups E^F1 and E^F2 are groups formed by cleaving group E^F. Invention also relates to novel fluorine-containing compounds of formulas 3-12, 3-13, 3-14, 3-15, 3-16, 4-12, 4-13, 4-14, 4-15, 4-16, 5-16, which are indicated in description.

EFFECT: increased resource of raw materials for production of fluoropolymers.

8 cl, 23 ex