Diethyl Ether → 4-(Chloropropyl)-1-(2-quinolyl)piperazine

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Reaction Steps

In 5 ml of acetone, 853 mg of 2-piperazin-1-ylquinoline as synthesized in Step 7-1-A was dissolved and to which 160 mg of sodium hydroxide as dissolved in 5 ml of water was added. Into the mixed liquid 0.5 ml of 1-bromo-3-chloropropane was dropped, followed by stirring for an overnight at room temperature. After addition of diethyl ether, the organic layer was washed with saturated aqueous sodium hydrogencarbonate solution, and the organic layer was dried over anhydrous magnesium sulfate. Distilling the solvent off under reduced pressure, the residue was purified on silica gel column chromatography (chloroform:methanol=50:1) to provide 1.10 g (95%) of 2-[4-(3-chloropropyl)piperazin-1-yl]quinoline.

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