Cesium carbonate → 3-(3-Ethynylphenyl)-2-fluoropyridine

Participants

Reaction Steps

To a solution of 2-fluoro-3-{3-[(trimethylsilyl)ethynyl]phenyl}pyridine (2.20 g, 8.1 mmol) in MeOH/CH2Cl2 (1/1, 60 mL) is added Cs2CO3 (3.17 g, 9.7 mmol) at room temperature. After stirring for 1 h, the reaction mixture is diluted with CH2Cl2 and passed through a thin layer of silica gel. The solution is concentrated and the crude material is purified by chromatography (silica gel, EtOAc/hexane:20/80) to give the title compound (1.23 g, 77%) as a solid. mp: 45-47° C. MS (+) EI: 198 M+.

Provenance & Evidence