Patent ID: 8742034

Claim:
A process for preparing compounds of the general formula (I) where R 1 is hydrogen, halogen, a straight-chain or branched C 1 -C 10 -alkyl, C 6 -C 14 -aryl, C 7 -C 18 -arylalkyl or C 4 -C 10 -cycloalkyl radical, n is an integer of at least 1, m is an integer of at least 1, X and X 1 are identical or different and are each oxygen, sulfur or —NH, A is a straight-chain or branched C 1 -C 20 -alkylene radical, a (—CF 2 —CH 2 —X 2 —) p —CH 2 —CH 2 — radical, where p is an integer from 2 to 20 and X 2 is oxygen, sulfur or —NH, or a —(CH 2 ), —X 3 —(CH 2 ) s ,— radical, where r and s are each, independently of one another, an integer from 1 to 20 and X 3 is oxygen, sulfur or an —NH radical, Y and Y I are identical or different and are each a radical having the general formula (II), (III) or (IV) below, where the radicals Z are identical or different and are each oxygen, sulfur, an —NH radical or an —NCH 3 radical, v is an integer from I to 6, R 2 , R 3 and R 4 are identical or different and are each hydrogen, a C 1 -C 10 -alkyl, C 6 -C 14 aryl, C 7 -C 18 -arylalkyl or C 4 -C 18 -cycloalkyl radical, and the depiction of Z in the middle of the cyclohexyl ring of the formula (IV) means that one of the carbon atoms in the cyclohexyl ring can be replaced by a unit Z, or Y can also be a radical of the general formula (V), where m, n, R 1 and Y have the meanings given above, by reacting compounds of the general formula (VIa) and/or (VIb) where m, n, R 1 , X, A and X 1 have the corresponding meanings given above for the compounds of the general formula (I), with a compound of the general formulae (VII), (VIII) or (IX) where R 2 , R 3 , R 4 , Z and v have the same meanings as given above for the radicals of the general formulae (II), (HI) and (IV), characterized in that the reaction is carried out in the presence of a Brönsted acid present in water-free form as catalyst and wherein the ratio of the compound of the general formula (VII), (VIII) or (IX) to the compound of the general formulae (VIa) and/or (VIb) is from 3:1 to 5:1, wherein the amount of the compound of the general formula (VII), (VIII) or (IX) per the ratio is based on the molar amount of end groups of the compound of the general formulae (VIa) and/or (VIb).