反应详情

Tert-butyl (5-formyl-1,3,4-oxadiazol-2-yl)carbamate (Intermediate O, 220 mg, 1.041 mmol) and sodium triacetoxy borohyride (441 mg, 2.08 mmol) was added to a solution of Trans-2-[4-(benzyloxy)phenyl]cyclopropanamine (Intermediate B, 250 mg, 1.041 mmol) in dry Dichloro ethane (2.5 mL) at 0° C. and stirred at RT for 24 h, then the solvent was evaporated. The residue was taken in MeOH (2.5 mL) and NaBH4 (116 mg, 3.138 mmol) was added at 0° C. and stirred for 2 h at RT. After completion, the solvent was evaporated, the residue was taken in water (10 mL) and extracted with EtOAc (4×10 mL) Combined extracts were washed with water (10 mL), brine (10 mL), dried over anhydrous Na2SO4, filtered and evaporated. The residue was purified by column chromatography (SiO2) using MeOH:CHCl3 (1:99) to get tert-butyl (5-((((trans)-2-(4-(benzyloxy)phenyl)cyclopropyl)amino)methyl)-1,3,4-oxadiazol-2-yl)carbamate (70 mg, 15.3%) as pale green liquid.

1. customthe solvent was evaporated
2. stirringstirred for 2 h at RT
3. customAfter completion, the solvent was evaporated
4. extractionextracted with EtOAc (4×10 mL)
5. washwere washed with water (10 mL), brine (10 mL)
6. dry with materialdried over anhydrous Na2SO4
7. filtrationfiltered
8. customevaporated
9. customThe residue was purified by column chromatography (SiO2)