Lithium Chloride → HCID 67528323, compound

Participants

Reaction Steps

Under an argon atmosphere, a mixture of 0.59 g (2.18 mmol) of 3-(4-bromobenzyl)-1,3-oxazolidine-2,4-dione, obtained in step 9.1., 1.60 g (4.35 mmol) of pyridin-2-yltri-n-butylstannane, 0.28 g (6.6 mmol) of lithium chloride and 0.125 g (0.10 mmol) of palladium tetrakis(triphenylphosphine) in 15 ml of toluene is heated at reflux overnight. It is cooled to ambient temperature, filtered on paper and rinsed in succession with 10 ml of toluene, 10 ml of ethyl acetate and 10 ml of toluene. The filtrates are concentrated under reduced pressure. The residue is taken up in 50 ml of acetonitrile and washed with four times 25 ml of n-hexane. The acetonitrile phase is concentrated under reduced pressure and the residue is purified by chromatography on silica gel, eluting with a 70/30 then 60/40 mixture of cyclohexane and ethyl acetate.

Provenance & Evidence