2-Phenylbutyric Acid → 2-(4-Chloromethylphenyl)-butyric acid
Reaktionsgleichung
ClC1C=CC(OC)=C(C=1)C(NC[CH2:11][C:12]1[CH:17]=[CH:16][C:15]([CH:18]([CH2:22][CH3:23])[C:19]([OH:21])=[O:20])=[CH:14][CH:13]=1)=O.CCC(C(O)=O)C1C=CC=CC=1.C=O.[ClH:41]>>[Cl:41][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([CH:18]([CH2:22][CH3:23])[C:19]([OH:21])=[O:20])=[CH:14][CH:13]=1Komponenten
4
Versuchsvorschrift
The 2[4-(2-aminoethyl)-phenyl]-butyric acid hydrochloride used as starting material is prepared in the following manner: 2-phenylburyric acid is reacted with paraformaldehyde/hydrochloric acid to give 2-(4-chloromethylphenyl)-butyric acid (b.p. 173°-176° C./0.1 mm Hg). By the reaction thereof with potassium cyanide, there is obtained 2-(4-cyanomethylphenyl)-butyric acid (oil) which, after catalytic hydrogenation, gives 2-[4-(2-aminoethyl)-phenyl]-butyric acid hydrochloride; m.p. 128°-130° C.