Ammonium fluoride → (S)-4-Benzyl-3-(3-[2-hydroxy-4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-phenyl]-(2S)-2-methoxy-propionyl)-oxazolidin-2-one

Participants

Reaction Steps

To a solution of (S)-4-benzyl-3-(3-{2-[dimethyl-(1,1,2-trimethyl-propyl)-silanyloxy]-4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-phenyl}-2-(2S)-methoxy-propionyl)-oxazolidin-2-one (1.6 g, 2.29 mmol) in 10 ml methanol, was added NH4F (169 mg, 4.58 mmol) and the reaction mixture kept at r.t. for 2 hours. It was then diluted with AcOEt, washed with water/ice and brine, the aqueous layer was extracted with AcOEt, the combined organic layers dried over Na2SO4 and evaporated. The crude product (1.22 g) was found to be a mixture of the title compound and of (S)-3-{2-hydroxy-4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-phenyl}-2-methoxy-propionic acid methyl ester and used without purification for the last step.

Provenance & Evidence