反应详情

A solution of 4.98 g of (3S-trans)-3-t-butoxycarbonylamino-1-hydroxy-4-methylazetidinone in 200 ml of methanol was treated with 132 ml of 4.5M ammonium acetate and then 66 ml of 1.5M titanium trichloride and stirred for 4.5 hours. The aqueous solution was diluted with an equal volume of 8% sodium chloride and extracted with ethyl acetate to give 3.48 g of crude product. Recrystallization from ether-hexane yielded 3.3 g of the title compound.

1. extractionextracted with ethyl acetate
2. customto give 3.48 g of crude product
3. customRecrystallization from ether-hexane