| 摘要 |
<p>A useful industrial chemical, oxazolinoazetidinylhydroxymethylbutenoic acid derivative (II) can be produced by oxidizing the corresponding oxazolinoazetidinylhalomethylbutenoic acid derivative(I). <CHEM> wherein R is an alkyl, aralkyl or aryl group, R<1> is a hydrogen atom or a carboxy protecting group and Hal is a halogen atom.</p> |
