Ethyl bromoacetate → HCID 20330525, compound

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Reaction Steps

To 0.01 mole of sodium hydride in 50 ml. dry dimethylformamide under nitrogen at 0.5° is added dropwise a solution of 0.01 mole of 5-mercaptomethyl-2,2,8-trimethyl-4H-1,3-dioxino[4,5-C]pyridine in 10 ml. of dimethylformamide. When the evolution of hydrogen has ceased, 0.011 mole of ethyl bromoacetate is added. The reaction mixture is allowed to stir overnight at room temperature and then poured into a mixture of benzene-ice water. The organic layer is separated and washed well with water, dried and concentrated in vacuo. Chromatography on silica gel and elution with ether petroleum ether (10-75%) gives 5-carboethoxymethylthiomethyl-2,2,8-trimethyl-4H-1,3-dioxino[4,5-C]pyridine.

Provenance & Evidence