4-Pyridinemethanamine → (trans)-2-{4-[({4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazol-5-yl}methyl)amino]phenyl}-N-(4-pyridinylmethyl)cyclopropanecarboxamide TFA Salt

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HATU (0.071 g, 0.18 mmol) and (+)-(trans)-2-{4-[({4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazol-5-yl}methyl)amino]phenyl}cyclopropanecarboxylic acid (III-3c) (0.062 g, 0.14 mmol) in DMF (5 mL) were stirred at RT for 45 min, then (4-pyridinylmethyl)amine (0.030 g, 0.28 mmol) was added. The solution was stirred at RT for 16 h, then saturated NaHCO3 solution (50 mL) and ethyl acetate (50 mL) were added. The organic layer was separated, washed with saturated NaHCO3 solution (50 mL), water (50 mL), brine (50 mL), dried over MgSO4, filtered and concentrated. The crude material was partially dissolved in dichloromethane (10 mL) and diethyl ether was added (10 mL). The solid was filtered, washed with diethyl ether, and dried to give the title compound as an orange residue. The solid was dissolved in CH2Cl2 (5 mL) and trifluoroacetic acid (1 mL) was added. The solution was concentrated to dryness to give the title compound as a TFA salt. 1H NMR (400 MHz, DMSO) δ 8.80 (t, J=5.9 Hz, 1H), 8.71 (d, J=5.7 Hz, 2H), 8.03 (d, J=8.4 Hz, 2H), 7.78 (d, J=8.3 Hz, 2H), 7.64 (d, J=5.9 Hz, 2H), 6.87 (d, J=8.3 Hz, 2H), 6.54 (d, J=8.2 Hz, 2H), 4.47 (bs, 2H), 4.41 (s, 2H), 2.43 (s, 3H), 2.15-2.10 (m, 1H), 1.81-1.77 (m, 1H), 1.28-1.23 (m, 1H), 1.14-1.09 (m, 1H).

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