反应详情

To a sodium methoxide, methanol mixture made from 1.43 g (62 mmole) sodium metal and 100 ml methanol was added 5.9 g (31 mmole) 3-hydroxy-2-hydroxymethylpyridine and the methanol removed in vacuo. The resulting residue was dissolved in 80 ml dimethylsulfoxide (DMSO) and 3.0 ml (34.7 mmole) allyl bromide in 20 ml DMSO was added over 20 minutes at room temperature. The mixture was stirred for two hours, the DMSO distilled in vacuo and the reside partitioned between chloroform/water. The aqueous phase was adjusted to pH 7.5 and extracted three times with chloroform. The combined organic layers were washed with water, brine, dried (Na2SO4) and concentrated to give 3.48 g (68%) of the desired ether.

1. customthe methanol removed in vacuo
2. dissolutionThe resulting residue was dissolved in 80 ml dimethylsulfoxide (DMSO)
3. distillationthe DMSO distilled in vacuo
4. customthe reside partitioned between chloroform/water
5. extractionextracted three times with chloroform
6. washThe combined organic layers were washed with water, brine
7. dry with materialdried (Na2SO4)
8. concentrationconcentrated
9. customto give 3.48 g (68%) of the desired ether