反应详情

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a solution of 2-methyl-5-phenyloxazole-4-carboxylic acid (WO 2009/077990, p. 113) (955 mg, 4.70 mmol) in CH2Cl2 (27 mL) was treated at rt with DMAP (143 mg, 1.17 mmol), HOBt (763 mg, 5.65 mmol), EDC (2.25 g, 11.75 mmol) and DIPEA (3.22 mL, 18.80 mmol) and the resulting mixture was stirred for 45 min at rt. A solution of 2-((4-(methoxymethyl)oxazol-2-yl)methyl)-2H-1,2,3-triazol-4-amine (983 mg, 4.70 mmol) in CH2Cl2 (20 mL) was then added and the reaction mixture was stirred overnight at rt. The mixture was diluted with CH2Cl2 (40 mL), the layers were separated and the org. phase was washed with water (40 mL), dried over MgSO4, filtered and the solvents were removed under reduced pressure. Purification of the residue by crystallization for EA to give the title compound as a white solid: TLC: rf (4:6 hept-EA)=0.14. LC-MS-conditions 07: tR=0.84 min, [M+H]+=395.44.

1. stirringthe reaction mixture was stirred overnight at rt
2. customthe layers were separated
3. washphase was washed with water (40 mL)
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customthe solvents were removed under reduced pressure
7. customPurification of the residue
8. customby crystallization for EA