Pyrrolidine → 5-methoxy-1H-pyrrolo(2,3-c)pyridine

참여 물질

반응 조건

반응 단계

10.76 g of N,N-dimethylformamide dimethyl acetal and 2.45 ml of pyrrolidine are added, in succession, to a solution of 5 g of the product obtained in Step 1 in 60 ml of dimethylformamide. The mixture obtained is first heated at 100° C. for 8 hours and then at 150° C. for 1 hour. Concentration is carried out under a vacuum of 10−1 mbar and the residue is taken up in 150 ml of tetrahydrofuran. The solution obtained is hydrogenated under a pressure of 10 bars for 4 hours in the presence of 10% Pd/C. After filtration and concentration, the residue is chromatographed over silica (eluant CH2Cl2/EtOH: 95/5) to yield the expected product.

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