Reactant for: 1.Preparation of (aryl)oxadiazolobenzoxazinones via Suzuki-Miyaura reaction. 2.Copper-catalyzed oxidative amination of benzoxazoles and related azoles via C-H and C-N bond activation. 3.Synthesis of N-(alkoxyphenyl)-aminocarbonylbenzoic acid derivatives as protein tyrosine phophatase 1B inhibitors. 4. Preparation of lipophilic deoxy-xylulose-phosphate reductoisomerase inhibitors. 5.Synthesis of benzoxazole benzenesulfonamides as allosteric inhibitors of fructose-1,6-bisphosphatase. application： Reactant for: Preparation of (aryl)oxadiazolobenzoxazinones via Suzuki-Miyaura reaction Copper-catalyzed oxidative amination of benzoxazoles and related azoles via C-H and C-N bond activation Synthesis of N-(alkoxyphenyl)-aminocarbonylbenzoic acid derivatives as protein tyrosine phophatase 1B inhibitors Preparation of lipophilic deoxy-xylulose-phosphate reductoisomerase inhibitors Synthesis of benzoxazole benzenesulfonamides as allosteric inhibitors of fructose-1,6-bisphosphatase