Tetrahydrofuran → HCID 178491273, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 4-[4-bromo-5-(4H-1,2,4-triazol-3-yl)-2-thienyl]pyridine (222.0 mg, 0.730 mmol) in tetrahydrofuran (5.9 mL, 72.3 mmol) cooled to −78° C. was added dropwise n-BuLi in hexanes (2.50 M, 1.2 mL, 2.90 mmol) under an atmosphere of argon and the mixture was stirred at −78° C. for 30 min. To the solution was added dropwise a solution of 4-methoxybenzaldehyde (0.53 mL, 4.34 mmol) in tetrahydrofuran (5.0 mL, 60 mmol) and the resulting solution was stirred for 30 min at −78° C. The reaction mixture was quenched by the addition of water (2 mL) and the resulting mixture was warmed to room temperature and stirred for 30 min. The mixture was extracted with EtOAc (5 mL) then the organic layer was separated, washed with brine, dried over MgSO4, filtered, and concentrated under the reduced pressure. The obtained residue was purified by prep HPLC to yield 62.0 mg as a yellow solid (23.5%). LCMS: (FA) ES+, 365. 1H NMR (400 MHz, d6-DMSO) δ: 8.68 (s, 1H), 8.55-8.57 (dd, J=1.5 Hz, 2H), 7.81 (s, br, 1H), 7.63-7.65 (dd, J=1.5 Hz, 2H), 7.40-7.44 (d, J=8.78 Hz, 2H), 6.82-6.84 (d, J=8.78 Hz, 2H), 6.72 (s, br, 1H), 3.68-3.69 (s, br, 3H).

Provenance & Evidence