反应详情

2-(1-Adamantyl)-5-propyl-1,3,4-oxadiazole (I) (49 mg, 0.2 mmol) and methylammonium trifluoroacetate (290 mg, 2 mmol, prepared by combining equimolar amounts of methylamine and trifluoroacetic acid in ether followed by concentration in vacuo) were stirred together in a sealed vial at 150° for 18 h. The residue was partitioned with methylene chloride and water, the organic layer washed with 10% K2CO3 and brine. The aqueous phase was extracted with methylene chloride (6×), the combined extracts dried (MgSO4) and concentrated in vacuo. The residue was purified by reverse phase HPLC on a C-18 silica gel column using an acetonitrile-0.1% trifluoroacetic acid gradient to afford 3-(1-adamantyl)-4-methyl-5-propyl-4H-1,2,4-triazole (4-3). MS: 260 (M+1).

1. customThe residue was partitioned with methylene chloride and water
2. washthe organic layer washed with 10% K2CO3 and brine
3. extractionThe aqueous phase was extracted with methylene chloride (6×)
4. dry with materialthe combined extracts dried (MgSO4)
5. concentrationconcentrated in vacuo
6. customThe residue was purified by reverse phase HPLC on a C-18 silica gel column