1,2-Dibromoethane → Methyl 5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-10-carboxylate

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Reaction Steps

Following the procedure in Example 17, methyl 4-hydroxy-3-(1H-imidazol-2-yl)benzoate reacted with 1,2-dibromoethane to give methyl 5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-10-carboxylate. Yield 76%. MS (ESI+): 245.0. 1H NMR (400 MHz, CDCl3) δ 9.21 (d, J=2.2, 1H), 7.91 (dd, J=8.6, 2.2, 1H), 7.20 (t, J=4.8, 1H), 7.05 (d, J=8.6, 1H), 7.00 (d, J=0.8, 1H), 4.53-4.48 (m, 2H), 4.43-4.39 (m, 2H), 3.91 (d, J=5.9, 3H).

Provenance & Evidence