Diisopropylethylamine → HCID 178473829, compound

Participants

Reaction Steps

A mixture of Example 73d (0.02 g, 0.051 mmol), 2-(2-methylthiazol-5-yl)acetic acid (0.012 g, 0.077 mmol), and 2-(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)-1,1,3,3-tetramethylisouronium hexafluorophosphate(V) (0.029 g, 0.077 mmol) in N,N-dimethyl acetamide (0.5 mL) was treated with N-ethyl-N-isopropylpropan-2-amine (0.027 mL, 0.153 mmol) and stirred at ambient temperature for 22 hours. The reaction mixture was partitioned between ethyl acetate and water and washed with saturated aqueous sodium chloride. The aqueous layers were combined, saturated with solid sodium chloride and extracted with ethyl acetate (4×100 mL). The organic layers were combined, dried over anhydrous magnesium sulfate, filtered and concentrated. The residue was purified by flash chromatography (silica gel, 0-15% methanol in dichloromethane). The material was further purified by reverse phase HPLC(C18, acetonitrile/water (0.1% TFA), 10-100%) to provide 0.0258 g (78%) of the title compound as the TFA salt. 1H NMR (400 MHz, PYRIDINE-d5) δ 11.24 (s, 1H), 10.34 (s, 1H), 8.34 (d, J=2.44 Hz, 1H), 7.62 (s, 1H), 7.54 (d, J=2.75 Hz, 1H), 7.35 (s, 1H), 7.21 (d, J=8.54 Hz, 1H), 6.89 (s, 1H), 4.20 (s, 2H), 4.13 (s, 3H), 4.07 (s, 2H), 3.64 (m, 1H), 3.25 (m, 1H), 2.63 (m, 2H), 2.55 (s, 3H), 2.59 (m, 1H), 1.93 (s, 3H), 1.69 (m, 2H), 1.50 (m, 2H). MS (ESI+) m/z 531.1 (M+H)+.

Provenance & Evidence