Sodium hydride → HCID 23081472, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-(2-chloro-4-nitroimidazol-1-ylmethyl)-3-(4-hydroxybiphenyl-3-yl)-5-methyloxazolidin-2-one prepared in Example 548 (1.23 g, 2.88 mmol), sodium hydride (127 mg, 3.16 mmol) and DMF (10 ml) was stirred at 100° C. for 4 hours. The reaction mixture was allowed to return to room temperature and concentrated under reduced pressure. To the residue, water was added, and the solution was extracted with methylene chloride. The organic phase was washed with water and a saturated saline solution, dried over magnesium sulfate and then filtered. The filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (methylene chloride/methanol=20/1) to afford 3-(2-methyl-6-nitro-2,3-dihydroimidazo[2,1-b]oxazol-2-ylmethyl)-5-phenyl-3H-benzoxazol-2-one (172 mg, yield 15%) as a yellowish brown powder.

Provenance & Evidence