2-Acetyl-4-methylpyridine → {4-[[1-(4-Methyl-pyridin-2-yl)-ethyl]-(3-methylpyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester

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Reaction Steps

Using General Procedure B, reaction of {4-[(3-Methyl-pyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester, 1-(4-methylpyridin-2-yl)-ethanone and NaBH(OAc)3 in CH2Cl2 gave {4-[[1-(4-methyl-pyridin-2-yl)-ethyl]-(3-methylpyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester as a pale yellow oil. Conversion to the HBr salt using General Procedure D gave COMPOUND 244 as a white solid. 1H NMR (D2O) δ 1.47 (br, 4H), 1.54 (d, 3H, J=6.0 Hz), 2.45 (s, 3H), 2.60 (m, 1H), 2.63 (s, 3H), 2.71 (m, 1H), 2.85 (br, 2H), 4.27 (s, 2H), 4.49 (q, 1H, J=6.0 Hz), 7.78 (d, 1H, J=6.3 Hz), 7.83 (t, 1H, J=7.2 Hz), 7.95 (s, 1H), 8.33 (d, 1H, J=7.8 Hz), 8.56 (m, 2H). 13C NMR (D2O) δ 15.08, 17.10, 22.38, 24.01, 25.03, 39.57, 51.07, 52.81, 59.73, 125.84, 127.25, 127.40, 137.08, 138.22, 140.83, 148.27, 152.41, 154.85, 162.82. ES-MS m/z 313 (M+H). Anal. Calcd. for C19H28N4.4.3HBr.3.5H2O: C, 31.55; H, 5.48; N, 7.74; Br, 47.49. Found: C, 31.64; H, 5.63; N, 7.43; Br, 47.61.

Provenance & Evidence