8-Amino-5,6,7,8-tetrahydroquinoline → 4-Methoxy-5,6,7,8-tetrahydroquinolin-8-amine

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8-amino-4-methoxy-5,6,7,8-tetrahydroquinoline was prepared in 68% yield from 8-hydroxy-4-methoxy-5,6,7,8-tetrahydroquinoline (preparation and characterization described by: Uchida, M.; Morita, S.; Chihiro, M.; Kanbe, T.; Yamasaki, K.; Yabuuchi, Y.; Nakagawa, K. Chem. Pharm. Bull. 1989, 37, 1517-1523.) using the same procedure employed to prepare 8-amino-5,6,7,8-tetrahydroquinoline (according to the procedures described in Bridger et al. U.S. patent application U.S. Ser. No. 09/535,314). 1H NMR (CDCl3) δ 1.59-2.15 (m, 6H), 2.60-2.65 (m, 2H), 3.84 (s, 3H), 3.95 (dd, 1H, J=6.0, 9.0 Hz), 6.61 (d, 1H, J=6.0 Hz). 8.32 (d, 1H, J=6.0 Hz); 13C NMR (CDCl3) δ 19.53, 22.89, 31.94, 51.57, 55.62, 104.04, 120.94, 148.52, 160.42, 163.71; ES-MS m/z 179 (M+H).

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