Hydrochloric Acid → HCID 64006143, compound

Participants

Reaction Steps

Crude 2-chloroethyl 2-methylbut-3-yn-2-ylcarbamate (1.05 g, 5.5 mmol) was dissolved in dry THF (20 mL) and 60% NaH in oil (665 mg, 16.6 mmol) was added. The mixture was stirred under N2 for 1 day and 5% aq HCl (25 mL) was added. The mixture was extracted with EtOAc (175 mL). The organic layer was washed with brine (25 mL) and dried over Na2SO4. Removal of the solvent left an oil (1.03 g) which was purified by chromatography on a 12-g cartridge eluted with a 0-80% EtOAc in hexanes gradient to afford 3-(2-methylbut-3-yn-2-yl)oxazolidin-2-one (567 mg, 67%) as a white solid. 1H NMR (CDCl3) 1.72 (s, 6H), 2.43 (s, 1H), 3.74 (dd, 2H), 4.18 (dd, 2H).

Provenance & Evidence