Benzoic Acid → 2-[[6-(3-Aminopiperidin-1-yl)-3-methyl-2,4-dioxopyrimidin-1-yl]methyl]benzonitrile;benzoic acid

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The benzoic acid salt was formed by treating the benzonitrile product (D) with benzoic acid to form 2-[6-(3-amino-piperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-ylmethyl]-benzonitrile benzoate. Preparation and isolation of the benzoate salt was performed by conventional methods for the formation of acid addition salts. 1H-NMR (400 MHz, CDCl3-CD3OD 10:1): δ 7.82 (d, 1H, J=7.6 Hz), 7.65 (t, 1H, J=7.6 Hz), 7.46 (t, 1H, J=7.6 Hz), 7.23 (d, 1H, J=8.0 Hz), 5.42 (s, 1H), 5.50-5.00 (ABq, 2H, J=41.6, 15.2 Hz), 3.30 (m, 2H), 3.16 (s, 3H), 2.91 (m, 1H), 2.76 (m, 2H), 1.93 (m, 1H), 1.79 (m, 1H), 1.51 (m, 2H). MS (ES) [m+H] calc'd for C18H22N5O2, 340.2; found, 340.2.

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