Triethylamine → HCID 86609879, compound

Participants

Reaction Steps

A solution of 10 g (5R)-3-(4-benzyloxy-3-fluoro-phenyl)-5-hydroxymethyl-oxazolidin-2-one (MW: 317.32, 31.51 mmol) and 4.78 g triethylamine (MW: 101.19, 47.26 mmol) in 300 ml dichloromethane was treated under stirring at 10° C. with 4.32 g of methane sulfonyl chloride (MW: 114.55, 37.82 mmol). The reaction was stirred at room temperature for one hour and monitored by TLC (ethyl acetate: hexane 1:1). The reaction mixture was quenched with 100 ml water and the organic layer washed with 100 ml brine. The organic layer was dried over magnesium sulfate, filtered and the filtrate evaporated under reduced pressure. The residue was dissolved in 100 ml dimethylformamide, 5.12 g sodium azide (MW: 65.01, 78.7 mmol) and a catalytic amount of tetrabutyl ammonium iodide were added. The suspension was stirred at 90° C. over night. The reaction was monitored by HPLC. The dimethylformamide was evaporated under reduced pressure, the residue dissolved in 200 ml dichloromethane and the organic layer washed successively with 100 ml water and 100 ml brine. The dichloromethane solution was dried over magnesium sulfate, filtered, and the filtrate evaporated under reduced pressure. The residue was crystallized from 150 ml of a 1/1 mixture of ethyl acetate: hexane. The crystals were collected to afford an off white solid. Yield: 10.4-g, 97%. MS: 343.1 (M+H)+−. Method: ESI+.

Provenance & Evidence