反应详情

A solution of phosphoryl chloride (0.5 ml in 10 ml of DCM) was added with care to a solution of but-2-yn-1-ol (8.75 g, 125 mmol) and dihydropyran (10.50 g, 125 mmol) in DCM (80 ml). The reaction mixture was stirred at room temperature for 16 h, washed with sodium hydrogen carbonate solution (3 times), dried (MgSO4) and the solvent removed in vacuo to yield a colorless oil. The crude product was purified by column chromatography [silica gel, euted with hexane/ethyl acetate (4:1), Rf: 0.36] to yield a colorless oil.

1. washwashed with sodium hydrogen carbonate solution (3 times)
2. dry with materialdried (MgSO4)
3. customthe solvent removed in vacuo
4. customto yield a colorless oil
5. customThe crude product was purified by column chromatography [silica gel, euted with hexane/ethyl acetate (4:1), Rf: 0.36]
6. customto yield a colorless oil