反应详情

A solution of 2-(tert-butoxy)-2-oxoethanaminium chloride (3.00 g, 17.9 mmol) and potassium carbonate (4.95 g, 35.8 mmol) in DMF (20 mL) was stirred at room temperature for 2 min. To the reaction mixture was added 4-(bromomethyl)benzonitrile (3.19 g, 16.3 mmol) and stirring continued for 12 h. The reaction mixture was diluted with water (50 mL) and extracted with EA (3×20 mL). The combined organic extract was dried over MgSO4 then concentrated. Purification of the crude product by a silica gel column (DCM/MeOH) gave 2.77 g (68%) of tert-butyl 2-((4-cyanobenzyl)amino)acetate INT-31 as a yellow oil. LCMS-ESI (m/z) calculated for C14H18N2O2: 246; found 247 [M+H]+, tR=0.92 min (Method 3).

1. extractionextracted with EA (3×20 mL)
2. extractionThe combined organic extract
3. dry with materialwas dried over MgSO4
4. concentrationthen concentrated
5. customPurification of the crude product by a silica gel column (DCM/MeOH)