Piperidine → HCID 17789091, Verbindung

Beteiligte Stoffe

Reaktionsschritte

6 ml of piperidine was stirred in dichloromethane at 0° C., and a solution of 3 g (15 mmol) of monomethyl terephthalate chloride in dichloromethane was added to the resultant mixture. The temperature was elevated to room temperature, and they were stirred for 2 hours and then diluted with 1 N hydrochloric acid. After the extraction with dichloromethane, the organic layer was washed with saturated aqueous sodium hydrogencarbonate solution and then with saturated aqueous NaCl solution, and dried over anhydrous magnesium sulfate. The solvent was evaporated, and the residue was stirred in ethanol. 30 ml of 1 N aqueous sodium hydroxide solution was added to the resultant mixture, and they were stirred at room temperature overnight. The solvent was evaporated, and the reaction liquid was concentrated and then diluted with 1 N hydrochloric acid. After the extraction with ethyl acetate, the organic layer was washed with saturated aqueous NaCl solution and dried over anhydrous magnesium sulfate. The solvent was evaporated to obtain the title compound.

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