[CH3:1][C:2]([NH2:7])([CH3:6])[CH2:3][CH2:4][NH2:5].[CH3:8][C:9]([CH3:13])(O)[C:10]#N.[OH2:14]>>[CH3:8][C:9]1([CH3:13])[NH:5][CH:4]=[CH:3][C:2]([CH3:6])([CH3:1])[NH:7][C:10]1=[O:14]In a manner analogous to that described in Example 3C hereinabove, 3-methyl-1,3-diaminobutane, water and acetone cyanohydrin are reacted, and the reaction product recovered. When dissolved and recrystallized from acetone it is identified as 3,3,7,7-tetramethyl-1,4-diazepin-2-one. Other primary amines may be used for other substituents.
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