反应详情

To 4-isopropyl-7-methyl-6-thiocyanato-benzothiazol-2-yl-amine (Example L-4; 4.0 g, 17 mmol) dissolved in CH2Cl2 (25 mL) and pyridine (5 mL), was added methyl chloroformate at 0° C. The reaction mixture was stirred at room temperature for 2 hours. H2O was added to the reaction mixture followed by EtOAc (100 mL). The organic layer was washed with 2N HCl, H2O, saturated sodium bicarbonate solution and brine, and was dried (MgSO4). The solvents were evaporated, and the residue was purified by flash chromatography (100% hexanes to 25% EtOAc in hexanes) to give 2-(methyloxycarbonyl)amino-4-isopropyl-7-methyl-6-thiocyanato-benzothiazole. MS (APCI): 322 (M+H).

1. washThe organic layer was washed with 2N HCl, H2O, saturated sodium bicarbonate solution and brine
2. dry with materialwas dried (MgSO4)
3. customThe solvents were evaporated
4. customthe residue was purified by flash chromatography (100% hexanes to 25% EtOAc in hexanes)