1-Methylpiperazine → HCID 66642779, compound

Participants

Reaction Steps

To a mixture of 1-(2-methoxy-5-nitrophenyl)piperidin-4-one (Preparation Example 502) (296 mg), 1-methylpiperazine (0.20 mL) and 1,2-dichloroethane (11 mL), sodium triacetoxyborohydride (385 mg) was added and stirred overnight at room temperature. After addition of water and saturated aqueous sodium hydrogen carbonate, the reaction liquid was extracted with chloroform, and the organic layer was dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography (eluent: chloroform:methanol=100:0 to 10:1) to give 1-[1-(2-methoxy-5-nitrophenyl)piperidin-4-yl]-4-methylpiperazine (0.40 g) as a brown oil.

Provenance & Evidence