Sodium Azide → HCID 19025473, compound

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3-Iodo-7-methoxy-2,3,4,5-tetrahydro-1H-1-benzazepin-2-one (4.074 g, 12.85 mmol) and sodium azide (4.178 g, 64.3 mmol, 5 eq.) were dissolved in 50 mL of dimethylformamide and heated with stirring at 60° for 2 hours. The solvent was evaporated under vacuum at room temperature and the residue redissolved in 150 mL of ethyl acetate and washed with water (3×50 mL) and brine (1×50 mL). The organic layer was separated, dried over MgSO4, filtered and evaporated to dryness under vacuum to yield 2.538 g (10.94 mmol, 85%) of product. 1H NMR (200 MHz, CDCl3): 2.2-2.7 (m,3H), 2.90 (m,1H), 3.75 (s,3H), 3.80 (m,1H), 6.75 (m,2H), 6.95 (d,8 Hz, 2H), 8.22 (br s,1H). FAB-MS: calculated for C11H12N4O2 232; found 233 (M+H,30%).

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