反应详情

tert-butyl methyl{[1-(2-oxoethyl)-2,3-dihydro-1H-inden-1-yl]methyl}carbamate (600 mg, 1.98 mmole) and 1-[(1R,5S)-8-azabicyclo[3.2.1]oct-3-yl]-2-methyl-1H-benzimidazole (622 mg, 1.98 mmole) was dissolved in 50 ml of DCE to which was added sodium triacetoxyborohydride (839 mg, 3.96 mmole) which was stirred overnight. A saturated solution of NaHCO3 was added to quench the remaining hydride. The organic layer was washed with water and evaporated. The resulting residue was absorbed into silica gel and 100% EtOAc was use to remove impurities followed by Methanol to remove the product affording 0.7425 g of tert-butyl methyl[(1-{2-[(1R,5S)-3-(2-methyl-1H-benzimidazol-1-yl)-8-azabicyclo[3.2.1]oct-8-yl]ethyl}-2,3-dihydro-1H-inden-1-yl)methyl]carbamate (70% yield).

1. customto quench the remaining hydride
2. washThe organic layer was washed with water
3. customevaporated
4. customThe resulting residue was absorbed into silica gel and 100% EtOAc
5. customto remove impurities
6. customto remove the product