反应详情

温度

120 °C

A mixture of 1-benzyl 4-methyl 4-(2-chloroethyl)piperidine-1,4-dicarboxylate (0.5 g, 0.001 mol), cyclohexanamine (0.18 mL, 0.0016 mol), sodium iodide (0.22 g, 0.0015 mol) and potassium carbonate (0.61 g, 0.0044 mol) in DMF (5.0 mL) was stirred and heated at 120° C. for overnight. Then the reaction mixture was diluted with brine, and extracted with ethyl acetate (3X). The combined organic layers were dried over Na2SO4, filtered, and concentrated. The residue was purified by combiflash (ethyl acetate in hexanes: 40%) to give 180 mg of benzyl 2-cyclohexyl-1-oxo-2,8-diazaspiro[4.5]decane-8-carboxylate.

1. extractionextracted with ethyl acetate (3X)
2. dry with materialThe combined organic layers were dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated
5. customThe residue was purified by combiflash (ethyl acetate in hexanes: 40%)