反应详情

To a solution of (1R)-1-hydroxy-5-t-butyldiphenylsilyloxy-1,2,3,4-tetrahydronaphthalene (1.5 g) in THF (20 ml) were added n-butyllithium (2.8 ml, 1.5M solution in hexane), (4,5-diphenyloxazol-2-yl)methyl bromide (1.8 g) and NaI (1.2 g) at −78° C. under N2. The solution was warmed to the room temperature and stirred for 6 hours. The mixture was poured into a mixture of ethyl acetate and water. The organic layer was washed with 1N-HCl solution, sat. NaHCO3 and brine, dried over MgSO4, and evaporated in vacuo. The residue was purified by chromatography on silica gel to afford (1R)-1-(4,5-diphenyloxazol-2-yl)methyloxy-5-t-butyldiphenylsilyloxy-1,2,3,4-tetrahydronaphthalene (1.65 g).

1. washThe organic layer was washed with 1N-HCl solution, sat. NaHCO3 and brine
2. dry with materialdried over MgSO4
3. customevaporated in vacuo
4. customThe residue was purified by chromatography on silica gel