Water → HCID 57026776, compound

Participants

Reaction Steps

To a solution of (2S,4R)-1-allyloxycarbonyl-4-t-butyldimethylsilyloxy-2-(2-methyl-3-oxo-1-butenyl)-pyrrolidine (9.9 g) in tetrahydrofuran (99 ml) was added lM solution of tetrabutylammonium fluoride in tetrahydrofuran (32.3 ml) at 0° C. After stirring at room temperature for 1 hour, the reaction mixture was poured into a mixture of ethyl acetate (200 ml) and water (100 ml). The aqueous layer was separated and extracted with ethyl acetate. The combined organic layer was washed twice with 1N hydrochloric acid (25 ml) and then with saturated aqueous sodium bicarbonate, water and brine successively, dried over magnesium sulfate and evaporated. The residue was chromatographed on silica gel (100 ml) eluting with a mixture of n-hexane and ethyl acetate (1:1-1:2 V/V) to give (2S,4R)-1-allyloxycarbonyl-4-hydroxy-2-(2-methyl-3-oxo-1-butenyl)pyrrolidine (5.65 g).

Provenance & Evidence