Sodium methanethiolate → HCID 178437943, compound

Participants

Reaction Conditions

Reaction Steps

To a round-bottom flask was added a solution of 4-(1-(5-(5-ethyl-4H-1,2,4-triazol-3-yl)-4-fluoro-2-methylbenzoyl)piperidin-4-yl)benzonitrile (compound 258.2, 20 mg, 0.050 mmol, 1.0 equiv) in N,N-dimethylformamide (3 mL). Sodium thiomethoxide (70 mg, 0.10 mmol, 2.0 equiv) was added to the reaction. The resulting mixture was stirred for 15 h at 110° C. in an oil bath, and then cooled to ambient temperature and quenched with 100 mL of ice water. The mixture was extracted with 50 mL of ethyl acetate and the combined organic layers were washed with 2×50 mL of brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The product (50 mg) was further purified by Prep-HPLC with the following conditions (1#-Pre-HPLC-001(SHIMADZU)): Column, SunFire Prep C18, 19*150 mm 5 um; mobile phase, water with 0.05% TFA and CH3CN (37% CH3CN up to 49% in 7 min, up to 100% in 3 min, down to 37% in 2 min); Detector, Waters 2489 254&220 nm. The fractions containing pure compound were combined and lyophilized to yield 4 mg (19%) of the title compound as a white solid. m/z (ES+) 446 (M+H)+. 1H NMR (300 MHz, CD3OD): δ 7.69 (d, J=8.4 Hz, 2H), 7.61-7.43 (m, 3H), 7.35 (br s, 1H), ˜4.85 (1H partially obscured by water peak), 3.77-3.60 (m, 1H), ˜3.3 (1H partially obscured by methanol solvent peak), 3.08-2.94 (m, 2H), 2.91 (q, J=7.7 Hz, 2H), 2.51 (s, 3H), 2.47 & 2.37 (2 singlets, amide rotamers, Ar—CH3, 3H), 2.10-1.97 (m, 1H), 1.88-1.55 (m, 3H), 1.40 (t, 3H).

Provenance & Evidence