反应详情

A solution of 2M oxalyl chloride in CH2Cl2 (0.062 mL, 0.125 mmol) was added to a stirred solution of 4-(2-fluorophenyl)-2-morpholinopyrimidine-5-carboxylic acid (Example 1; 0.03 g, 0.1 mmol) in CH2Cl2(2 mL) and DMF (0.030 mL) at room temperature, and stirring continued for 15 min. A solution of N-benzylcyclobutanamine (0.016 g, 0.1 mmol) in CH2Cl2 (1 mL) and diisopropylethylamine (0.044 mL,0.25 mmol) were added and stirred for 3 h. The solvent was removed under reduced pressure, and the residue was purified by Biotage SP1 on packed silica gel column (10%-80% EtOAc/Hexanes gradient) to give N-benzyl-N-cyclobutyl-4-(2-fluorophenyl)-2-morpholinopyrimidine-5-carboxamide (0.032 g,72%). Mass Spec. FIA MS 447 (M+1), 1H NMR(DMSO-d6, 500 MHz) δ 8.43(brs,1H), 7.52-7.55(m,2H), 6.99-7.31(m,7H), 4.62(brm,2H), 3.78(brm,4H0, 3.68(brn,4H), 2.15(brm,2H), 1.85(brm,2H), 1.17(brm,2H).

1. stirringstirred for 3 h
2. customThe solvent was removed under reduced pressure
3. customthe residue was purified by Biotage SP1