2-Chloroacetamidine → HCID 178520004, compound

Participants

Reaction Conditions

Reaction Steps

To solution of NaOMe (1.9 mL) in MeOH (0.5 mL) was added 5-oxo-1-(3-trifluoromethyl-pyridin-2-yl)-azepane-4-carboxylic acid ethyl ester (Intermediate B; 285 mg, 0.96 mmol), followed by 2-chloro-acetamidine (149 mg, 1.16 mmol). After heating at 100° C. in a microwave for 15 min, the mixture was cooled and concentrated. The residue was dissolved in water and extracted with CH2Cl2. The combined organic layers were dried, concentrated, and directly purified using Preparative HPLC (conditions as in Example 54) to give the title compound (86 mg, 26%). MS (ESI): mass calcd. for C22H20F6N6O, 498.16; m/z found, 499.3 [M+H]+. 1H NMR (MeOD): 8.95 (d, J=2.3 Hz, 1H), 8.47-8.45 (m, 1H), 8.29 (dd, J=8.5, 2.2 Hz, 1H), 8.04 (dd, J=7.8, 1.7 Hz, 1H), 7.88 (d, J=8.6 Hz, 1H), 7.16 (dd, J=7.7, 4.9 Hz, 1H), 4.61 (s, 2H), 3.68-3.61 (m, 4H), 3.53 (s, 3H), 3.49-3.45 (m, 2H), 3.30-3.28 (m, 2H).

Provenance & Evidence