Phosphorus trichloride → Benzyl 6-azido-3-chloro-1-azabicyclo[3.2.0]-hept-2-en-7-one-2-carboxylate

反応式

P(Cl)(Cl)[Cl:2].[N:5]([CH:8]1[C:14](=[O:15])[N:13]2[CH:9]1[CH2:10][C:11](=O)[CH:12]2[C:16]([O:18][CH2:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)=[O:17])=[N+:6]=[N-:7]>CN(C)C=O.C1(C)C=CC=CC=1>[N:5]([CH:8]1[C:14](=[O:15])[N:13]2[CH:9]1[CH2:10][C:11]([Cl:2])=[C:12]2[C:16]([O:18][CH2:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)=[O:17])=[N+:6]=[N-:7]

参加物

実験手順

Phosphorus trichloride (1 mmol) is added to a solution of benzyl 6-azido-1-azabicyclo[3.2.0]heptan-3,7-dione-2-carboxylate (0.5 mmol) in anhydrous dimethylformamide (2.5 ml) and the mixture is left to stand at room temperature. After 5 hr, the mixture is diluted with toluene, washed with water, 1 N hydrochloric acid, 5% sodium bicarbonate solution, and brine, dried over magnesium sulfate, and filtered. Evaporation of the solvent under vacuum yields benzyl 6-azido-3-chloro-1-azabicyclo[3.2.0]-hept-2-en-7-one-2-carboxylate.