I tried to synthesize unsymmetrical azines. But I got a mixture of symmetrical (2 Products) and unsymmetrical azines (desired Product). I tried to separate it by column chromatography. When I was choosing the solvent system for column by TLC, I found that the Rf value difference between the 3 Products Is very very small. It appears to be tedious to separate the 3 products and get the desired unsymmetrical azine.
Can any one give an idea for separating the 3 products or any other method to synthesize unsymmetrical azine without any formation of symmetrical azine
separation of azines