[CH2:1]([NH:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH3:37])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].Br[CH2:39][CH2:40][CH2:41][C:42]([O:44][CH2:45][CH3:46])=[O:43]>C1(C)C=CC=CC=1>[CH2:20]([N:19]([CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])[CH2:39][CH2:40][CH2:41][C:42]([O:44][CH2:45][CH3:46])=[O:43])[CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH3:37]A solution of dioctadecylamine (5.2 g., 0.01 mole), ethyl 4-bromobutyrate (1.95 g., 0.01 mole) and toluene (50 ml.) is heated at reflux for sixteen hours, then cooled and concentrated in vacuo to a semi-solid oil. The oil is triturated with ethylacetate, filtered, and the filtrate washed with water, then dried (Na2SO4). Removal of the solvent gives the product as an oil (3.7 g.).
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