Triethylamine → 1-[4-(16-Bromohexadecylamino)benzoyl]pyrrolidine

Reaction equation

C([N:11]([C:29]1[CH:37]=[CH:36][C:32]([C:33](Cl)=[O:34])=[CH:31][CH:30]=1)[CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][Br:28])(OCC1C=CC=CC=1)=O.[CH2:38]([N:40](CC)[CH2:41][CH3:42])[CH3:39].N1CCCC1>CCOCC>[Br:28][CH2:27][CH2:26][CH2:25][CH2:24][CH2:23][CH2:22][CH2:21][CH2:20][CH2:19][CH2:18][CH2:17][CH2:16][CH2:15][CH2:14][CH2:13][CH2:12][NH:11][C:29]1[CH:30]=[CH:31][C:32]([C:33]([N:40]2[CH2:41][CH2:42][CH2:39][CH2:38]2)=[O:34])=[CH:36][CH:37]=1

Participants

Procedure

A solution of 6.0 g. of 4-[N-carbobenzyloxy-N-(16-bromohexadecyl)amino]benzoyl chloride and 1.2 g. triethylamine in 100 ml. warm ether is treated with 1.1 g. of pyrrolidine. After 1 hour at reflux, the precipitate is filtered off and washed with warm ether. After evaporation in dryness, the intermediate is dissolved in 50 ml. 30% hydrobromic/acetic acid and warmed at 50° for 2 hours. The solvents are evaporated and the product is partitioned between methylene chloride and water. The layers are separated and the methylene chloride is evaporated. The residue is crystallized from acetone to yield colorless crystals.