4-Methylmorpholine → 1-(t-Butyldimethylsilyloxy)-2-(p-nitrophenoxycarbonyloxy)ethane

Participants

Reaction Steps

A 604 mg (3.00 mmol) sample of p-nitrophenoxycarbonylchloride in 3 mL of methylene chloride was added to a solution of 0.528 g (3.00 mmol) of 2-(t-butyldimethylsilyloxy)ethanol and 0.330 mL of 4-methylmorpholine in 2 mL of methylene chloride cooled in an ice bath. The solution was stirred for 2 hours. The mixture was diluted with methylene chloride, which was washed with water, dried and concentrated. The crude product was chromatographed on silica gel, eluting with 10% ethyl acetate in hexane. The solvent was removed and the product dried to afford 0.453 g of the title compound, which was taken directly to the next step.

Provenance & Evidence