反应详情

An excessive amount of a solution of diazomethane in diethyl ether (30 mL) was added to (3S,4S)-1-benzyloxycarbonyl-3-(tert-butoxycarbonyl)amino-4-vinylpyrrolidine (270 mg, 779 μmol). Under cooling with ice, palladium acetate (10 mg) was added thereto, followed by stirring at room temperature for 2 hours. After completion of reaction, insoluble matter was removed through filtration. The filtrate was concentrated under reduced pressure, and the obtained residue was purified though silica gel column chromatography (ethyl acetate:n-hexane=1:9 to 1:4), to thereby yield the title compound as a colorless oily substance (269 mg, 96%).

1. additionwas added
2. customAfter completion of reaction, insoluble matter
3. customwas removed through filtration
4. concentrationThe filtrate was concentrated under reduced pressure
5. customthe obtained residue was purified though silica gel column chromatography (ethyl acetate:n-hexane=1:9 to 1:4)