反应详情

Four equivalents of allyl lithium are added to a stirring suspension of 2 equivalents copper (I) iodide in THF at -50° C. under argon. After the mixtures becomes homogeneous (approx. 20 minutes.), a solution of the title ester of Example 209 (1 equivalent) in THF is added to the cold mixture and stirred below -50° C. for approx. 30 minutes. The mixture is poured into saturated ammonium chloride solution and stirred vigorously for 15 minutes. The mixture is then partitioned between ether and water and the organic layer is washed with water and brine before it is dried (Na2SO4). The mixture is then filtered and stripped of all solvent. The title material is then purified by column chromatography.

1. custom(approx. 20 minutes.)
2. stirringstirred vigorously for 15 minutes
3. customThe mixture is then partitioned between ether and water
4. washthe organic layer is washed with water and brine before it
5. dry with materialis dried (Na2SO4)
6. filtrationThe mixture is then filtered
7. customThe title material is then purified by column chromatography