一种合成2,3-二苯基喹喔啉的新方法

A Novel Method for the Synthesis of 2,3-Diphenylquinoxaline

报道了一种以碳酸钾为催化剂一锅合成2,3-二苯基喹喔啉的新方法,产物收率可达94%。该方法用氧气作为反应试剂,不需要添加配体,且操作简便。通过高分辨质谱和核磁共振波谱对产物的结构进行了表征,结果显示得到的是目标化合物。

In order to study the characteristics of magnetic field distribution on Helmholtz coil axis, the expression of magnetic field distribution on Helmholtz coil axis were derived, first, based on the Biot-Savart law and superposition principle of magnetic field. And then, through experiment the magnetic field distribution on Helmholtz coil axis was measured. The accurate method of measuring the magnetic field distribution on Helmholtz coil axis was obtained through analysis error, after comparing the measured values with the theoretical value.