Water → HCID 23438587, compound

Participants

Reaction Steps

In 100 ml of pyridine was dissolved 10.13 g of N-t-butoxycarbonylglycine and the solution was added with 5 g of 2-amino-5-bromopyridine, 13.85 g of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 7.06 g of 4-dimethylaminopyridine, individually at room temperature. Stirring was conducted for 15 hours at the same temperature. Water was added to the reaction mixture which was then extracted with ethyl acetate. The organic layer thus separated was washed with brine, dehydrated, filtered, and concentrated under vacuum to give 5.58 g of 2-(N-t-butoxycarbonylglycinylamino)-5-bromopyridine. This compound was dissolved, along with 5.82 g of (S)-[N-3-(4-trimethylstannyl-3-fluorophenyl)-2-oxo-5-oxazolidinyl]methyl acetamide, in 70 ml of dimethylformamide and added with 4.9 ml of triethyl amine and 2.97 g of dichlorobistriphenylphosphine palladium (II) at room temperature. Reaction was performed at 100° C. for 4 hours with stirring. Water was added to the reaction mixture, followed by extraction with ethyl acetate. The organic layer was washed with brine, dehydrated, filtered and concentrated under vacuum. Recrystallization of the concentrate provided 5.13 g of (S)-[N-3-(4-(2-(N-t-butoxycarbonylglycinylaminopyridin-5-yl)-3-fluorophenyl)-2-oxo-5-oxazolidinyl)methyl acetamide. This product was reacted with 1.65 ml of trimethylsilyl iodide in chloroform at room temperature for 30 min under a nitrogen atmosphere with stirring. Following the addition of chloroform, the organic layer thus separated was washed with brine, dehydrated, filtered, and concentrated in vacuo. The concentrate was purified through column chromatography to provide the title compound. 550 mg.

Provenance & Evidence