1: malononitrile With sodium hydride in ethylene glycol dimethyl ether 0.5 h; 2: 2,3-Dichloroquinoxaline in ethylene glycol dimethyl ether 1 h; Heating;

1.1: thionyl chloride / dimethylformamide 2.1: NaH / 1,2-dimethoxy-ethane / 0.5 h 2.2: 78 percent / 1,2-dimethoxy-ethane / 1 h / Heating View Scheme