反应详情

(2S,6RS)-2,6-Dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester (380 mg, 1.45 mmol) is dissolved in 10 mL of THF and 1 mL of DMF. Sodium hydride (60%, 72 mg, 3.14 mmol) is added at 0° C. and left to stir at room temperature for thirty minutes before 7-bromomethyl-4-chloro-quinoline (257 mg, 1.0 mmol) is added. The reaction is stirred for four hours. Ethyl acetate is added to the mixture, and the reaction is quenched with 3 mL of H2O. The two layers are separated and ethyl acetate (2×30 ml) is used to extract before dried over magnesium sulfate. The residue after filtration and concentration is chromatographed on silica gel (60% EtOAc/Hexane) to give (2S, 6RS)-4-(4-chloro-quinolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester (417 mg, 95% yield). C22H20ClN3O3 MS m/z: 438, 440.

1. waitleft
2. additionis added
3. customthe reaction is quenched with 3 mL of H2O
4. customThe two layers are separated
5. extractionto extract
6. dry with materialbefore dried over magnesium sulfate
7. filtrationThe residue after filtration and concentration
8. customis chromatographed on silica gel (60% EtOAc/Hexane)