Synthesis of new 3‐(4‐oxo‐4H‐chromen‐3‐yl)‐3a,6a‐dihydropyrrolo[3,4‐d]isoxazole‐4,6‐dione derivatives by 1,3‐dipolar cycloaddition reaction |
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Authors: | Zhengfeng Xie Fangming Liu Yonghai Hui Caihong Liu Yadong Sun |
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Abstract: | A series of new 3‐(4‐oxo‐4H‐chromen‐3‐yl)‐3a,6a‐dihydropyrrolo3,4‐d]isoxazole‐4,6‐dione have been synthesized by the reaction of N‐arylmaleimides with nitrile oxide, prepared from α‐chloro‐4‐oxo‐4H‐chromen‐carbaldehyde oximes in situ through 1,3‐dipolar cycloaddition reaction. The structures of all new compounds were confirmed by elemental analysis, ir,1H nmr and mass spectral data. |
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