The 4 aryl 3,5 bis(methoxycarbonyl) 2 isoxazoline N oxides(nitrones)(a) in anhydrous DMF was refluxed for 3-4 hours and ten of 4 aryl 3,5 bis(methoxycarbonyl) 2 isoxazoles(b) were given with good yields(43%-81%) via t...The 4 aryl 3,5 bis(methoxycarbonyl) 2 isoxazoline N oxides(nitrones)(a) in anhydrous DMF was refluxed for 3-4 hours and ten of 4 aryl 3,5 bis(methoxycarbonyl) 2 isoxazoles(b) were given with good yields(43%-81%) via thermolysis. All of the 4 arylisoxazoles were identified with IR, \{ 1H NMR\}, \{ 13 C NMR\}, MS and elemental analysis. A novel and convenient synthetic method of 4 arylisoxazol was porvided.展开更多
文摘The 4 aryl 3,5 bis(methoxycarbonyl) 2 isoxazoline N oxides(nitrones)(a) in anhydrous DMF was refluxed for 3-4 hours and ten of 4 aryl 3,5 bis(methoxycarbonyl) 2 isoxazoles(b) were given with good yields(43%-81%) via thermolysis. All of the 4 arylisoxazoles were identified with IR, \{ 1H NMR\}, \{ 13 C NMR\}, MS and elemental analysis. A novel and convenient synthetic method of 4 arylisoxazol was porvided.
