[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[O:9][C:10]2[C:15]([N:16]=1)=[CH:14][CH:13]=[CH:12][N:11]=2.[C:17](Cl)(=[O:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1>N1C=CC=CC=1>[C:17]([NH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[O:9][C:10]2[C:15]([N:16]=1)=[CH:14][CH:13]=[CH:12][N:11]=2)(=[O:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1An ice cold solution of 1 gram of 2-(2-aminophenyl)oxazolo[5,4-b]pyridine in 15 ml. of dry pyridine was treated with 1 gram of benzoyl chloride slowly. The reaction mixture was diluted with ice-water and stirred for 10 minutes and the resulting solid was collected on a filter and recrystallized from benzene to give 2-(2-benzoylaminophenyl)oxazolo[5,4-b]pyridine, m.p. 197°-198° C.
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