反应详情

温度

60 °C

A mixture of compound 12 (0.293 g, 0.79 mmol) and sodium azide (0.154 g, 2.38 mmol) in DMF (5 ml) was stirred at 60° C. for 24 hours. The reaction mixture was filtered and evaporated in vacuo. The residue was partitioned between water and EtOAc. The organic layer was separated, washed with water, dried over Na2SO4, and evaporated to give compound 13 as a pale yellow oil (mixture of cis and trans diastereomers, ratio=1:1.1, 0.18 g, 68%). The diastereomers were separated using a preparative chiral HPLC procedure (ChiralPak OD column; hexanes:MeOH=98:2; μ=8 ml/min; and λ=225 nm) to give compounds 13a-13d (retention times: 9.8 min, 12.0 min, 14.5 min and 20.1 min, respectively).

1. filtrationThe reaction mixture was filtered
2. customevaporated in vacuo
3. customThe residue was partitioned between water and EtOAc
4. customThe organic layer was separated
5. washwashed with water
6. dry with materialdried over Na2SO4
7. customevaporated