Tetrahydrofuran → tert-Butyl (4S)-4-ethenyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate

Participants

Reaction Steps

To a solution of methyltriphenylphosphonium bromide (3.1 g, 8.64 mmol) in dry tetrahydrofuran (30 mL) was add a solution of sodium bis(trimethylsilyl)amide in hexane (1.0 M, 8.64 mL, 8.64 mmol) under argon. After the reaction was stirred for further 20 minutes, a solution of (4R)-4-formyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate (1.8 g, 7.86 mmol) in dry tetrahydrofuran (20 mL) was added dropwise. The resulting mixture was stirred at room temperature overnight. The solvent was removed under reduced pressure. The residue was purified by flash column to give tert-butyl (4S)-4-ethenyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate (1.5 g, 83.9%) as colorless liquid.

Provenance & Evidence