[C:1]1([O:11][CH2:12][CH2:13][NH:14][C:15]2[CH:23]=[CH:22][C:18]([C:19]([OH:21])=[O:20])=[CH:17][CH:16]=2)[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.[C:24](Cl)(=[O:26])[CH3:25].Cl>N1C=CC=CC=1>[C:24]([N:14]([CH2:13][CH2:12][O:11][C:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1)[C:15]1[CH:16]=[CH:17][C:18]([C:19]([OH:21])=[O:20])=[CH:22][CH:23]=1)(=[O:26])[CH3:25]A solution of 6.14 g. of 4-[2-(1-naphthyloxy)ethylamino]benzoic acid and 20 ml. of acetyl chloride in 50 ml. pyridine is warmed on a steam-bath for 8 hours. The dark solution is then poured into 370 ml. of 2 N hydrochloric acid. The resulting solution is then extracted several times with methylene chloride. The residue from evaporation of this extract is crystallized from acetonitrile giving a white solid, m.p. 182°-183° C.
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