Tributylvinyltin → HCID 86710144, compound

Participants

Reaction Steps

To a solution of 7 (60 mg, 0.864 mmol) in 1,4-dioxane (4 ml) were added lithium chloride (73.2 mg, 1.73 mmol), tetrakis(triphenylphosphine)palladium (99.8 mg, 10 mol %) and tributyl(vinyl)tin (0.327 ml, 1.12 mmol). The mixture was heated at reflux for 3 h then cooled and diluted with CHCl3. The mixture was washed with brine, dried over Na2SO4, filtered, and concentrated in under diminished pressure. The residue was purified by column chromatography on silica gel [AcOEt/MeOH (20:1)] to afford tert-butyl 3-heptyl-2,6-dimethyl-5-vinylpyridin-4-yl carbonate (9) (30 mg, 64%). 1H NMR (CDCl3) δ 0.85-0.88 (m, 3H), 1.27-1.32 (m, 10H), 1.47 (s, 9H), 2.40 (s, 3H), 2.43 (s, 3H), 2.47-2.50 (m, 2H), 5.50 (dd, 2H, J=18 Hz, 11.2 Hz) and 6.45 (dd, 1H, J=11.6 Hz, 11.6 Hz).

Provenance & Evidence