methyl (2R)-3-[tert-butyl(dimethyl)silyl]oxy-2-methylpropanoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Imidazole (6.44 g, 42.8 mmol) and tert-butyldimethylsilyl chloride (6.05 g, 88.8 mmol) were added to a solution of (R)-3-hydroxy-2-methylpropionic acid methyl ester (5.0 g, 42.33 mmol) in dimethylformamide (50 mL), and the mixture was stirred at room temperature for 1.5 hours. Water was added to the reaction mixture, followed by extraction with hexane twice. The extract was then dried over magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure to give 9.3 g (95%) of the title compound as a colorless oil. followed by extraction with hexane twice The extract was then dried over magnesium sulfate After filtration the solvent was evaporated under reduced pressure