Patent RU-2399607-C2 (RU)
Title: Selectively reacting olefins containing terminal cf2 group in mixture
Inventor: NAPPA MARIO DZHOZEF
IPC: C07C17/395
Filed: 2006-04-03
Granted: 2010-09-20
Abstract: FIELD: chemistry. 
     SUBSTANCE: invention relates to a method of reducing molar ratio (1) of a first component selected from a group consisting of compounds of formula Y 1 Y 2 C=CF 2 , where each of Y 1  and Y 2  independently denotes H, F, Cl, Br, C 1 -C 6 alkyl or C 1 -C 6  halogenalkyl containing not more than 3 chlorine atoms, 2 bromine atoms and 1 iodine atom, and (2) a second component selected from a group consisting of saturated compounds of formula C d H e F f Cl g Br h I k , where d is an integer ranging from 1 to 10, e+f+g+h+k equals 2d+2, provided that g equals 0, 1, 2 or 3, h equals 0, 1 or 2 and k equals 0 or 1, and unsaturated compounds of formula Y 3 Y 4 C=CY 5 Y 6 , where each of Y 3 , Y 5  and Y 6  independently denotes H, F, Cl, Br, C 1 -C 6  alkyl or C 1 -C 6  halogen alkyl containing not more than 3 chlorine atoms, 2 bromine atoms and 1 iodine atom, provided that Y 5  and Y 6  do not denote F at the same time and Y 4  denotes C 1 -C 6  alkyl or C 1 -C 6  halogenalkyl containing not more than 3 chlorine atoms, 2 bromine atoms and 1 iodine atom in a mixture. Said method involves bringing said mixture into contact with at least one selective removal agent selected from a group consisting of SO 3  and RSO 3 H, where R is selected from a group consisting of F, Cl, OH, C 1 -C 8  alkyl, C 1 -C 8  fluoroalkyl or C 1 -C 8  fluoroalkoxyalkyl containing not more than two ester oxygen atoms, with subsequent selective reaction of said selective removal agent with said first component. The invention also relates to a method of extracting at least one product selected from a group consisting of saturated saturated compounds of formula C d H e F f Cl g Br h I k , where d is an integer ranging from 1 to 10, e+f+g+h+k equals 2d+2, provided that g equals 0, 1, 2 or 3, h equals 0, 1 or 2 and k equals 0 or 1, and unsaturated compounds of formula Y 3 Y 4 C=CY 5 Y 6 , where each of Y 3 , Y 5  and Y 6  independently denotes H, F, Cl, Br, C 1 -C 6  alkyl or C 1 -C 6  halogen alkyl containing not more than 3 chlorine atoms, 2 bromine atoms and 1 iodine atom, provided that Y 5  and Y 6  do not denote F at the same time and Y 4  denotes C 1 -C 6  alkyl or C 1 -C 6  halogenalkyl containing not more than 3 chlorine atoms, 2 bromine atoms and 1 iodine atom in a mixture which contains (i) said at least one product and (ii) an olefin impurity selected from a group consisting of compounds of formula Y 1 Y 2 C=CF 2 , where each of Y 1  and Y 2  independently denotes H, F, Cl, Br, C 1 -C 6  alkyl or C 1 -C 6  halogen alkyl containing not more than 3 chlorine atoms, 2 bromine atoms and 1 iodine atom. The method involves (a) bringing said mixture into contact with at least one selective removal agent selected from a group consisting of SO 3  and RSO 3 H, where R is selected from a group consisting of F, Cl, OH, C 1 -C 8  alkyl, C 1 -C 8  fluoroalkyl and C 1 -C 8  fluoroalkoxyalkyl containing not more than two ether oxygen atoms, with subsequent selective reaction of said selective removal agent with olefin impurity, resulting in reduction of the radio of the olefin impurity to the said at least one product; and (b) separation of said at least one product and olefin impurity formed during the reaction using the selective removal agent obtained at step (a). 
     EFFECT: separation of desired products from impurities. 
     10 cl, 20 ex