Tributylvinyltin → HCID 58266301, compound

Participants

Reaction Steps

A mixture of 5′-bromo-6′-chloro-2-fluoro-5-(4-piperidin-1-ylmethyl-phenyl)-[3,4]bipyridinyl-3′-ylamine (93 mg, 0.19 mmol), vinyltributyl tin (63 μL, 0.21 mmol), tetrakis(triphenylphosphine)palladium(0) (11 mg, 5 mol %) and lithium chloride (25 mg, 0.59 mmol) in 1,4-dioxane (1.0 mL) was heated under reflux for 3.5 h. The reaction mixture was allowed to cool to ambient temperature, diluted with water (10 mL) and extracted with DCM (3×20 mL). The combined organic layer was concentrated in vacuo and the resultant residue purified by flash chromatography (silica, 4 g column, ISCO, 0-10% MeOH in DCM) to afford the title compound as a beige powder (77 mg, 82%). 1H NMR (CDCl3, 400 MHz): 8.50 (dd, J=2.5, 1.0 Hz, 1H), 7.94 (s, 1H), 7.88 (dd, J=8.5, 2.5 Hz, 1H), 7.54-7.47 (m, 4H), 6.53 (dd, J=18.0, 11.5 Hz, 1H), 5.37 (dd, J=11.5, 1.0 Hz, 1H), 5.11 (dd, J=18.0, 1.0 Hz, 1H), 3.60 (s, 2H), 3.55-3.50 (m, 2H), 2.48-2.35 (m, 4H), 1.68-1.58 (m, 4H), 1.50-1.44 (m, 2H). LCMS (Method B): RT=2.32 min, M+H+=423/425.

Provenance & Evidence