A brief review on the mechanistic investigations on the thermal decompositions of azoalkanes was given. The contents are :
1 Thermolyses of Dialkyldiazenes. (One- step vs two- step decompositions)
2 Decompositions via Electrocyclic Cycloreversion.
3 Cyclic Dialkyldiazenes.
4 Pyrazoline Decompositions. (The riddling stereochemistry and a potential panacea from both theory, Y. Jean 1974, and experiment, R. G. Bergman 1977)