[H-].[Li+].[Al+3].[H-].[H-].[H-].[C:7]([C:9]1[C:14]([CH3:15])=[CH:13][C:12]([C:16](OCC)=[O:17])=[CH:11][C:10]=1[CH3:21])#[N:8]>O1CCCC1.O>[NH2:8][CH2:7][C:9]1[C:14]([CH3:15])=[CH:13][C:12]([CH2:16][OH:17])=[CH:11][C:10]=1[CH3:21]To a solution of aluminum lithium hydride (2.1 g) in tetrahydrofuran (20 ml) was added a solution of ethyl 4-cyanomesitylenate (2.9 g) in tetrahydrofuran (30 ml) at 0° C. and the mixture was refluxed under heating for 6 hr. To this reaction mixture was added 50% (v/v) tetrahydrofuran in water under ice-cooling. This mixture was stirred at room temperature for 30 min and the catalyst was filtered off using Celite. The solvent was evaporated and the obtained residue was recrystallized from methanol-isopropyl ether to give the title compound (5.5 g) as white crystals.
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