Abstract The synthesis and properties of 4, 6-dichloro-(IV), 4-chloro-(XII) and 6-chloro-3- methyl-isoxazolo [5, 4-b] pyridine (XI) are described. Depending on the reaction conditions compound IV with hydrazine or methoxide gave mono-or bi-substituted products. The halogen atom at the 4-position was shown to be the more mobile.
![4,6-dichloro-3-methyl-isoxazolo[5,4-b]pyridine结构式](https://image.chemsrc.com/caspic/468/63523-56-8.png)
![3-甲基异噁唑并[5,4-b]吡啶结构式](https://image.chemsrc.com/caspic/376/58035-50-0.png)
![4,6-dihydrazino-3-methyl-isoxazolo[5,4-b]pyridine结构式](https://image.chemsrc.com/caspic/299/63523-65-9.png)