1,3-Diethyl-8-methoxy-7-nitro-1,3,4,5-tetrahydro-benzo[d]azepin-2-one → 7-Amino-1,3-diethyl-8-methoxy-1,3,4,5-tetrahydro-3-benzazepin-2-one

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Reaction Steps

1,3-Diethyl-8-methoxy-7-nitro-1,3,4,5-tetrahydro-benzo[d]azepin-2-one (205 mg, 0.70 mmol) was charged to 10 ml EtOH in a Parr bottle and then 50 mg of 10% Pd/C was also charged. The resulting suspension was shaken under 40 psi hydrogen (g) for 2 h. The resulting suspension was filtered through celite and evaporated to yield 7-amino-1,3-diethyl-8-methoxy-1,3,4,5-tetrahydro-3-benzazepin-2-one (170 mg, 93%) which was used crude in the next reaction. 1H-NMR (CDCl3) δ 6.58 (s, 1H), 6.44 (s, 1H), 3.92-3.77 (m, 5H), 3.70-3.40 (br s, 1H), 3.58-3.38 (m, 3H), 3.09 (p, J=7 Hz, 1H), 2.95 (p, J=7 Hz, 1H), 2.20 (p, J=7 Hz, 1H), 1.90 (p, J=7 Hz, 1H), 1.10 (t, J=7 Hz, 3H), 1.04 (t, J=7 Hz, 3H); LC/Ms (ESI+): 263 (M+H).

Provenance & Evidence