申请人:Fine Serguei
公开号:US20070021417A1
公开(公告)日:2007-01-25
The present invention provides improved methods of converting R-N-(4-morpholiyl-3-fluorophenyl)-2-oxo-5-oxazolidinyl-methyl azide (III) to the intermediate S-N-(4-morpholinyl-3-fluorophenyl)-2-oxo-5-oxazolidinyl-methyl amine (II) that involve the production of fewer by-products than previous methods. The amine (II) may then be converted into linezolid (I) of high chemical purity with respect to the inactive R-enantiomer and bis-linezolid (IV), and is in high yield, without the need for tedious, complicated purification steps, such as chromatography.