The Erc Mechanism and the Formation of Abnormal Product in the Stevens Rearrangement

The reaction mechanism of the Stevens Rearrangement is very much controversial one. Theformation of the products in Stevens Rearrangement mainly explained by the “radical pairmechanism” and sometimes by the “ionic pair mechanism”. But the two mechanisms are stillvery much controversial. To explain the formation of normal and abnormal product of theStevens Rearrangement, I proposed a new mechanism scheme entitled the ERC (EliminationRecombination Coupling) mechanism. This mechanism will explain the formation ofabnormal as well as normal product and will also maintain parity between the “radical pairmechanism” and the “ionic pair mechanism”.