N1C=CC=CC=1.[C:7]([NH2:16])(=[O:15])[C:8]1[C:9](=[CH:11][CH:12]=[CH:13][CH:14]=1)[OH:10].[CH3:17][O:18][C:19]1[CH:27]=[CH:26][C:22]([C:23](Cl)=O)=[CH:21][CH:20]=1.C(O)(C)C>C1(C)C(C)=CC=CC=1>[CH3:17][O:18][C:19]1[CH:27]=[CH:26][C:22]([C:23]2[O:10][C:9]3[CH:11]=[CH:12][CH:13]=[CH:14][C:8]=3[C:7](=[O:15])[N:16]=2)=[CH:21][CH:20]=12.5 ml pyridine is added to a suspension of 0.25 mol salicylamide in 50 ml xylene. While boiling under reflux (water separator) 0.26 mol 4-methoxybenzoyl chloride is added within 3 hours and it is heated to boiling for a further 3 hours under reflux. A further 2.5 ml pyridine is added and it is heated for a further 8 hours. After cooling to room temperature it is poured onto 400 ml isopropanol and suction filtered. The residue is recrystallized from ethylene glycol monomethyl ether.
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