Fluoropolyether group containing compound and method for producing the same
A fluoropolyether-containing compound of the following formula (1a): R a —R 2 —R 1 —R b (1a) wherein the symbols are as defined in the specification. Also disclosed is a fluoropolyether-containing compound of the following formula (1b): R a —R 2′ —R 1 —R b (1b), as well as a method for producing a compound of the formula (A): FOC—R 2 —R 1 —COOR 12 (A) wherein the symbols are as defined in the specification.
1. A fluoropolyether-containing compound of the following formula (1a):
wherein
R a is COF, COOR 11 , CH 2 OH, or CHO;
R b is COF, COOR 11 , CH 2 OH, or CHO;
wherein R a and R b are groups different from each other;
R 11 is each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine;
R 1 is a perfluoroalkylene group having 2 to 10 carbon atoms;
R 5a is CF 2 CF 2 CH 2 ;
R 6a is a linear alkylene group having 1 to 9 carbon atoms substituted with fluorine; and
n is an integer of 2 to 200.
2. The fluoropolyether-containing compound according to claim 1 ,
wherein R 6a is a linear alkylene group having 1 to 3 carbon atoms substituted with fluorine.
3. The fluoropolyether-containing compound according to claim 1 ,
wherein R 6a is a linear alkylene group having 2 carbon atoms substituted with fluorine.
4. The fluoropolyether group-containing compound according to claim 1 , wherein R a is COF, R b is COOR 11 , and R 11 is an alkyl group having 1 to 6 carbon atoms.
5. The fluoropolyether group-containing compound according to claim 1 , wherein R 1 is a perfluoroalkylene group having 2 to 6 carbon atoms.
6. A fluoropolyether-containing compound of the following formula (1b):
wherein
R a is COF, COOR 11 , CH 2 OH, or CHO;
R b is COF, COOR 11 , CH 2 OH, or CHO;
provided that
if R a is COF or COOR 11 , R b is CH 2 OH or CHO, or
if R b is COF or COOR 11 , R a is CH 2 OH or CHO;
R 11 is each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine;
R 1 is an a perfluoroalkylene group having 2 to 10 carbon atoms;
R 2′ is —R 6b —(OR 5b ) n —O—;
R 5b is CF 2 CF 2 CH 2 ;
R 6b is CF 2 CH 2 ; and
n is an integer of 2 to 200.
7. A method for producing a compound of the formula (A):
wherein
R 1 is a perfluoroalkylene group having 2 to 10 carbon atoms;
R 2 is —R 6 —(OR 5 ) n —O—;
R 5 is a linear alkylene group having 2 to 10 carbon atoms substituted with fluorine;
R 6 is a linear alkylene group having 1 to 9 carbon atoms substituted with fluorine;
R 12 is an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine; and
n is an integer of 2 to 200,
the method comprising:
reacting an acid fluoride compound of the formula (a):
wherein
R 13 is an alkylene group having 1 to 9 carbon atoms optionally substituted with fluorine; and
R 12 is an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine,
with a cyclic ether compound of the formula (b):
wherein R 15 is a linear alkylene group having 2 to 10 carbon atoms substituted with fluorine.
8. The production method according to claim 7 , wherein R 13 is a perfluoroalkylene group having 1 to 9 carbon atoms.
9. The production method according to claim 7 , wherein R 15 is a linear alkylene group having 2 to 4 carbon atoms substituted with fluorine.
10. The production method according to claim 7 , wherein R 15 is CF 2 CF 2 CH 2 .