Stannane, tributyl(1-ethoxyethenyl)- → HCID 44136067, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 1 g of 6-iodo-N-phenylimidazo[1,2-a]pyridine-2-carboxamide in 50 mL of toluene are added 159 mg of tetrakis(triphenylphosphine)palladium and 1.09 g of tributyl(1-ethoxyvinyl)tin. The reaction mixture is heated for 9 hours at 150° C. and then for 16 hours at 130° C., and concentrated to dryness. The residue is taken up in dichloromethane and washed with aqueous 10% potassium fluoride solution. The organic phase is dried and concentrated to dryness and the residue is chromatographed on a silica cartridge, eluting with a mixture of cyclohexane and ethyl acetate. The fractions containing the expected product are combined and evaporated to dryness under reduced pressure to give 0.52 g of 6-(1-ethoxyvinyl)-N-phenylimidazo[1,2-a]pyridine-2-carboxamide in the form of a beige-coloured solid.

Provenance & Evidence