Pyridine → HCID 178502569, compound

Participants

Reaction Steps

3-(2'-Nitroimidazolyl)-2,2-difluoropropionic acid hydroxyethylamide (6.0 g, 22.7 mmol) was dissolved in a solvent mixture of methyl chloroformate (30 ml) and chloroform (30 ml) and cooled by ice. To the solution, a solution of pyridine (6.0 ml) in chloroform (30 ml) was dropwise added over 2 hours. The completion of the reaction was confirmed by thin-layer chromatography. Then, the reaction solution was washed with dilute hydrochloric acid and water, dried over magnesium sulfate, concentrated and subjected to silica gel column chromatography to obtain methyl 3-(2'-nitroimidazolyl)-2,2-difluoropropionamidoethoxyformate (6.89 g). m.p. 50.5°-52.5° C.

Provenance & Evidence