5-Aminovaleric acid → HCID 20531976, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5.05 gm (43.1 mmole) of 5-aminopentanoic acid, 23.3 gm (86.1 mmole) of stearyl alcohol, and 12.0 gm (63.1 mmole) of p-toluenesulfonic acid monohydrate in 200 ml of toluene was heated at reflux, using a Dean-Stark trap to remove water. After 90 minutes, the solution was allowed to cool to 0° C., giving a heavy gelatinous precipitate. The crude ester was collected, washed thoroughly with toluene, triturated with diethyl ether, and dried in vacuo to give 21.1 gm (38.8 mmole) of fluffy white octadecyl 5-aminopentanoate as the tosylate salt. The ester was sufficiently pure according to nmr spectroscopy (in (CD3)2SO) for subsequent use without further purification.

Provenance & Evidence