[CH2:1]([N:8]1[CH2:12][C@H:11]([CH2:13]OS(C)(=O)=O)[C@@H:10]([OH:19])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[N-:20]=[N+:21]=[N-:22].[Na+]>CN(C)C=O>[N:20]([CH2:13][C@@H:11]1[C@@H:10]([OH:19])[CH2:9][N:8]([CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH2:12]1)=[N+:21]=[N-:22](3R,4R)-1-Benzyl-3-hydroxy-4-methanesulfonyloxymethylpyrrolidine (835 mg), sodium azide (381 mg) and N,N-dimethylformamide (12 mL) were mixed together, and the mixture was stirred at 120° C. for 1 hour and was concentrated under reduced pressure. Water (10 mL) was then added to the resulting residue and the mixture was extracted with diethyl ether (2×30 mL). The diethyl ether layers were combined, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (eluant: ethyl acetate: methanol=20:1) to give (3R,4R)-3-azidomethyl-1-benzyl-4-hydroxypyrrolidine as a pale brown oil (576 mg).
Wird geladen…
