A new synthesis of β-nitroenamines by amination of nitroolefins with methoxyamines

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Shinzo Seko and Ichiro Komoto


Abstract


References

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  11. 1H NMR spectral data are as follows (J values in Hz). 2a: δH(270 MHz, CDCl3) 2.07 (s, 3H), 6.03 (br s, 1H), 7.02 (t, 1H, J 11.55), 8.62 (br s, 1H). 2b: δH(270 MHz, CDCl3) 2.12 (s, 3H), 2.18 (s, 3H), 7.94 (br s, 1H), 10.08 (br s, 1H). 2c: δH(270 MHz, CDCl3) 1.63–1.78 (m, 4H), 2.53 (t, 2H, J 6.27), 2.62 (t, 2H, J 6.27), 6.73 (br s, 1H), 9.69 (br s, 1H). 2d: δH(270 MHz, CDCl3) 0.89 (m, 3H), 1.30 (m, 6H), 1.61 (m, 2H), 2.24 (m, 2H), 6.54 (s, 1H), 6.67 (br s, 1H), 9.22 (br s, 1H). 2e: δH(270 MHz, CDCl3) 6.64 (br s, 1H), 6.81 (s, 1H), 7.45–7.59 (m, 5H), 9.29 (br s, 1H). 2f: δH(270 MHz, CDCl3) 2.99 (d, 3H, J 5.61), 6.58 (s, 1H), 7.34–7.39 (m, 2H), 7.47–7.54 (m, 3H), 10.22 (br s, 1H). 2g: δH(400 MHz, DMSO-d6) 6.93 (s, 1H), 7.79 (t, 1H, J 8.05), 8.09 (m, 1H), 8.40 (m, 1H), 8.45 (m, 1H), 9.09 (br s, 1H), 9.38 (br s, 1H). 2h: δH(400 MHz, CDCl3) 1.96 (s, 3H), 5.72 (br s, 1H), 7.29 (td, 1H, J 1.51, 7.39), 7.39–7.50 (m, 3H), 9.56 (br s, 1H). 2i: δH(270 MHz, CDCl3) 1.96 (s, 3H), 3.84 (s, 3H), 6.00 (br s, 1H), 6.89–7.03 (m, 3H), 7.38 (t, 1H, J 7.92), 9.69 (br s, 1H). 2j: δH(270 MHz, DMSO-d6) 1.85 (s, 3H), 6.79–6.93 (m, 3H), 7.31 (t, 1H, J 7.92), 8.72 (br s, 1H), 9.83 (br s, 1H). 2l: δH(270 MHz, CDCl3) 2.39 (s, 3H), 6.62 (dd, 1H, J 1.65, 3.63), 6.89 (d, 1H, J 3.63), 7.65 (d, 1H, J 1.65), NH2 n.d..
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