CS([C:4]1[N:13]2[C:7]([C:8](=[O:18])[C:9]3[CH:17]=[CH:16][CH:15]=[CH:14][C:10]=3[CH:11]=[CH:12]2)=[N:6][N:5]=1)=O.[CH3:19][O-:20].[Na+]>>[CH3:19][O:20][C:4]1[N:13]2[C:7]([C:8](=[O:18])[C:9]3[CH:17]=[CH:16][CH:15]=[CH:14][C:10]=3[CH:11]=[CH:12]2)=[N:6][N:5]=1The reaction of 3-methylsulfinyl-11H-s-triazolo [3,4-b][3]benzazepin-11-one with sodium methoxide yielded 3-methoxy-11H-s-triazolo[3,4-b][3]benzazepin-11-one. Colorless platelets (as recrystallized from methanol), melting point: 149°-150° C.
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