A 5-(2-substituted-4-nitrophenyl)-oxazole is prepared by decarboxylating a 5-(2-substituted-4-nitrophenyl)-4-oxazolecarboxylic acid in an aprotic amide solvent containing a protic compound. A 5-(2-substituted-4-nitrophenyl)-oxazolecarboxylic acid and a 5-(2-substituted-4-nitrophenyl)-carboalkoxyoxazole, which are novel compounds, are provided.
一种 5-(2-取代-4-
硝基苯基)-
噁唑是通过在含有一种原生化合物的烷基酰胺溶剂中对一种 5-(2-取代-4-
硝基苯基)-4-
噁唑羧酸进行脱羧而制备的。本发明提供了一种 5-(2-取代-4-
硝基苯基)-
噁唑羧酸和一种 5-(2-取代-4-
硝基苯基)-羧基
噁唑,它们都是新型化合物。