反应详情

Sodium triacetoxy borohydride (883 mg, 4.166 mmol) was added slowly at 0° C. to a solution of (trans)-2-(4-(benzyloxy)phenyl)cyclopropanamine (Intermediate B, 500 mg, 2.083 mmol), 2-aminopyrimidine-5-carbaldehyde (256 mg, 2.083 mmol) in DCE (10 mL) and stirred for 20 h. After completion, the solvent was evaporated. The residue was dissolved in Methanol (15 mL), NaBH4 (237 mg, 6.249 mmol) was added slowly at 0° C. and stirred for 3 h. After completion, the solvent was evaporated, the residue was dissolved in ice water (20 mL) and extracted with EtOAc (2×20 mL) The combined organic layers were washed with brine (20 mL) and dried over anhydrous Na2SO4, filtered and evaporated. The crude residue was purified by prep HPLC to afford 5-(((trans)-2-(4-(benzyloxy)phenyl)cyclopropylamino)methyl)pyrimidin-2-amine (180 mg, 25%) as white solid. 1H-NMR (400 MHz, DMSO-d6) δ (ppm): 0.85 (q, 1H), 0.90 (quin, 1H), 1.73 (m, 1H), 2.07 (m, 1H), 2.75 (brs, 1H), 3.53 (s, 2H), 5.04 (s, 2H), 6.46 (s, 2H), 6.85 (d, 2H), 6.92 (d, 2H), 7.33 (m, 1H), 7.42 (m, 4H), 8.11 (s, 2H). Mass (M+H): 347.3

1. customAfter completion, the solvent was evaporated
2. dissolutionThe residue was dissolved in Methanol (15 mL)
3. stirringstirred for 3 h
4. customAfter completion, the solvent was evaporated
5. dissolutionthe residue was dissolved in ice water (20 mL)
6. extractionextracted with EtOAc (2×20 mL) The combined organic layers
7. washwere washed with brine (20 mL)
8. dry with materialdried over anhydrous Na2SO4
9. filtrationfiltered
10. customevaporated
11. customThe crude residue was purified by prep HPLC