Synthesis and physicochemical studies on 1,2‐bisazolylethanes

Abstract Twenty symmetrical and asymmetrical 1,2‐bisazolylethanes have been obtained from azoles and 1,2‐dibromoethane or 1‐chloro‐2‐(pyrazol‐1‐yl)ethane by phase transfer catalysis (PTC). The 1 H and 13 C nmr properties are reported and the chemical shifts of the ethylene carbon atoms discussed using an additive model.