Hydrochloric Acid → 3-Azido-4-(3-benzyloxycarbonyl-2-oxopropyl)-azetidin-2-one

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Reaction Steps

A solution of N-(t-butyldimethylsilyl)-3-azido-4-(3-benzyloxycarbonyl-2-oxopropyl)azetidin-2-one (1.0 g) in methanol (10 ml) is treated with conc. hydrochloric acid (0.1 ml) and left at room temperature for 2 hr. The solution is diluted with water and extracted with ethyl acetate. The extracts are washed with 5% sodium bicarbonate solution and brine, dried, and evaporated under vacuum. The residue is chromatographed on silica gel to give 3-azido-4-(3-benzyloxycarbonyl-2-oxopropyl)-azetidin-2-one.

Provenance & Evidence