反应详情

A mixture of 10 g of the product obtained in Stage 1 (0.0523 mol), 16.5 g of triphenylphosphine (0.0628 mol), 17.3 g of carbon tetrabromide (0.0628 mol) and 200 ml of acetonitrile is left stirring for 2 hours. The solvent is then evaporated under vacuum and the product purified by chromatography on a silica column, Merck 70-230 mesh, using dichloromethane as eluent.

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2. customThe solvent is then evaporated under vacuum
3. customthe product purified by chromatography on a silica column, Merck 70-230 mesh