Ethyl Acetate → HCID 9899533, compound

Participants

Reaction Steps

3,3,5,5-Tetramethyl-1-(2-pyridinylethynyl)cyclohexanol (200 mg, 0.78 mmol) was dissolved in pyridine. POCl3 (153 mg, 1.0 mmol) was added, and the mixture was heated to reflux for 6 h. After cooling, the POCl3 and pyridine were removed in vacuo. The residue was purified by flash column chromatography on silica gel eluting with 2:1 hexane:ethyl acetate to afford 2-[(3,3,5,5-tetramethyl-1-cyclohexen-1-yl)-ethynyl]pyridine (148 mg, 80% yield) as a light tan solid. M.p. 55-56° C. 1H NMR (CDCl3, 300 MHz) Δ8.56 (m, 1H), 7.62 (m, 1H), 7.40 (d, J=7 Hz, 1H), 7.18 (m 1H), 6.09 (s, 1H), 2.00 (s, 2H), 1.35 (s, 2H), 1.05 (s, 6H), 0.99 (s, 6H).

Provenance & Evidence