反应详情

4-[6-(2-Methoxy-phenyl)-pyrimidin-4-ylcarbamoyl]-piperidine-1-carboxylic acid benzyl ester (XI) (0.45 g, 1.00 mmol) was dissolved in methanol:dichloromethane (4:1) (24 ml) and 10% Pd/C (0.2 g) was added under an atmosphere of nitrogen. The reaction was stirred at room temperature under hydrogen balloon pressure for 18 hours. The catalyst was removed from the reaction mixture by filtration through a celite bed and the filtrate was evaporated to dryness. Then the crude product was treated with dry diethyl ether (10 ml) and the solid was filtered to obtain piperidine-4-carboxylic acid [6-(2-methoxy-phenyl)-pyrimidin-4-yl]-amide (compound #6A) (0.19 g, 42%) as a white solid.

1. customThe catalyst was removed from the reaction mixture by filtration through a celite bed
2. customthe filtrate was evaporated to dryness
3. additionThen the crude product was treated with dry diethyl ether (10 ml)
4. filtrationthe solid was filtered