[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:13]=[CH:12][C:11]([C:14]#[N:15])=[CH:10][CH:9]=2)=[CH:4][CH:3]=1.OO.[OH-].[Na+].C([OH:22])C>CC(C)=O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:13]=[CH:12][C:11]([C:14]([NH2:15])=[O:22])=[CH:10][CH:9]=2)=[CH:4][CH:3]=16-(4-Chlorophenyl)-3-pyridinecarbonitrile (1.61 grams), 30% hydrogen peroxide (3.0 cc.), 6N sodium hydroxide (0.3 cc.), and about 6 ml ethanol were placed in a reaction vessel and cooled slightly. The reaction temperature rose to about 50° C. and the mixture was stirred for about 1 hour. After the reaction had cooled, a solid precipitate formed and was collected by filtration. As indicated by TLC, pure product was obtained by heating the solid in refluxing acetone, yield 0.4 gram, m.p. 245°-258° C.
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