| abstract |
R is selected from the group consisting of (C 1 -C 25 ) alkyl, (C 2 -C 25 ) alkenyl, aryl, (C 7 -C 10 ) aralkyl; n and m are each independently an integer from 2 to 8; p is 1 or 2; A is -B-, -B- (CH 2 ) r -B-, or -B- (CH 2 ) r -B- (CH 2 ) z -B-, wherein r and z are from 2 to 8 Is an integer, B is R 1 is selected from hydrogen, (C 1 -C 4 ) alkyl, (C 1 -C 4 ) acyl, tert-butoxycarbonyl, and R 2 is hydrogen and (C 1 -C 4 ) -NR 1 -or -N (R 2 ) 2 + l / pQ -p selected from alkyl; Q -p is a chloride, bromide, iodide, nitrate, sulfate, hydrogen sulfate and perchlorate (perchlorate), R 3 are independently of one another, R and R 3 is COO will have the same meaning -, and R 4 is (C 2 -C 14) alkyl, R 4 -O-SO 3 - is an anion selected from, Q -p is chloride, bromide, iodide, nitrate, sulfate, hydrogen sulfate And when selected from perchlorate, R is not (C 1 -C 4 ) alkyl. |