Diisopropylethylamine → 5-chloro-N-[(4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl]-2-ethyl-3-[ethyl(oxan-4-yl)amino]benzamide

Participants

Reaction Steps

To a solution of 5-chloro-2-ethyl-3-[ethyl(oxan-4-yl)amino]benzoic acid (100 mg, 0.32 mmol) in DMF (2 ml) at room temperature under nitrogen was added HBTU (146 mg, 0.38 mmol) followed by N-ethyl-N-(propan-2-yl)propan-2-amine (84 μl, 0.48 mmol) and 3-(aminomethyl)-4,6-dimethyl-1,2-dihydropyridin-2-one (89%, 60.3 mg, 0.35 mmol). After stirring for 3 hours at room EtOAc (30 ml) was added to the reaction mixture and this was then washed with deionized water (5 ml) followed by saturated NaHCO3(aq) (3×5 ml). The organic phase was dried over MgSO4, filtered and concentrated under reduced pressure. The residue was purified by FCC (5 g silica, Isolute cartridge, gradient of eluents; 100% EtOAc to 97:3 EtOAc:MeOH) to give 90 mg (63%) of the title compound as a white solid. LC-MS 97%, m/z=446.1/448.2, 1H NMR (500 MHz, Chloroform-d) δ ppm 11.93 (s, 1H), 7.14 (t, J=5.7 Hz, 1H), 7.10 (d, J=2.0 Hz, 1H), 7.04 (d, J=2.0 Hz, 1H), 5.95 (s, 1H), 4.52 (d, J=5.8 Hz, 2H), 3.95 (d, J=11.2 Hz, 2H), 3.30 (td, J=11.3, 3.6 Hz, 2H), 3.01 (q, J=7.0 Hz, 2H), 2.93 (ddd, J=15.3, 10.0, 5.3 Hz, 1H), 2.83 (q, J=7.4 Hz, 2H), 2.38 (s, 3H), 2.22 (s, 3H), 1.71-1.63 (m, 4H), 1.02 (t, J=7.5 Hz, 3H), 0.86 (t, J=7.0 Hz, 3H).

Provenance & Evidence