中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-氯-5-苯基-1,2-恶唑 | 3-chloro-5-phenylisoxazole | 31329-61-0 | C9H6ClNO | 179.606 |
3-羟基-5-苯基异恶唑 | 3-hydroxy-5-phenylisoxazole | 939-05-9 | C9H7NO2 | 161.16 |
3-溴-5-苯基异噁唑 | 3-bromo-5-phenylisoxazole | 10557-74-1 | C9H6BrNO | 224.057 |
3-Arylisoxazol-5-ones and 5-arylisoxazol-3-ones were prepared and converted to the N-methyl and O-methyl derivatives by reaction with diazomethane. The halogen in 3-phenyl-5-chloroisoxazole was replaced by several alkoxy and thioalkoxy groups. The 3,5-disubstituted isoxazoles thus obtained reacted with n-butyllithium to form the 4-lithio derivatives, as shown by conversion to 4-carboxylic acids and 4-iodocompounds. 3-Methoxy-5-phenylisothiazole was also lithiated at the 4-position.