Task: Translation
Input (Czech): e en  se t²k  zp sobu p° pravy deriv t  karboxylov  kyseliny obecn ho vzorce I,  kde znamen   X skupinu OR.sup.2.n. nebo NH.sub.2.n.,  R.sup.1.n. p°edstavuje C.sub.1.n. a  C.sub.20 .n.alkylovou skupinu, C.sub.1.n. a  C.sub.20 .n.hydroxyalkylovou skupinu, C.sub.3.n. a  C.sub.12 .n.cykloalkyl, C.sub.4.n. a  C.sub.12 .n.alkylcykloalkyl, C.sub.4.n. a  C.sub.12 .n.cykloalkylalkyl, C.sub.5.n. a  C.sub.20.n. alkylcykloalkylalkyl, aryl, C.sub.7.n. a  C.sub.20.n. arylalkyl, C.sub.7.n. a  C.sub.20.n. alkylaryl, heteroalifatick² kruh obsahuj c  4 a  8 atom  v etn  s 1 nebo 2 heteroatomy nebo heteroaromatick² kruh obsahuj c  5 a  6 atom  v etn  s 1 nebo 2 heteroatomy a R.sup.2.n. p°edstavuje C.sub.1.n. a  C.sub.20 .n.alkylovou skupinu, reakc  nitrilu karboxylov  kyseliny obecn ho vzorce II, kde R.sup.1 .n.m  shora uveden² v²znam a alkohol  obecn ho vzorce III,  kde R.sup.2 .n.m  shora uveden² v²znam, p°i teplot  50 a  300 .degree.C a za tlaku 0,01 a  35 MPa v p° tomnosti heterogenn ho katalyz toru. Reakce se prov d  za p° tomnosti oxidu titani it ho jako heterogenn ho katalyz toru.\
Output (English): A process is disclosed for preparing carboxylic acid derivatives having the general formula (I), in which X stands for OR2 or NH2, R1 stands for C1-C20 alkyl, C1-C20 hydroxyalkyl, C3-C12-cycloalkyl, C4-C12 alkyl-cycloalkyl, C4-C12-cycloalkyl-alkyl, C5-C20 alkyl-cycloalkyl-alkyl, aryl, C7-C20 aralkyl, C7-C20 alkylaryl, an heteroaliphatic or heteroaromatic ring with 5 to 8 carbon atoms and R2 stands for C1-C20 alkyl, from carboxylic acid nitriles having the general formula (II) R1-C.ident.N, in which R1 has the above-mentioned meanings, and from alcohols having the general formula (III) R2-OH, in which R2 has the above-mentioned meanings. The reaction is carried out in the liquid phase at temperatures from 50 to 300 °C and pressures from 0.1 to 350 bars in the presence of an heterogeneous catalyst.