ChemInform Abstract: The Mechanism of Formation of Grignard Reagents: Trapping of Free Alkyl Radical Intermediates by Reaction with Tetramethylpiperidine‐N‐oxyl.

Abstract In the presence of the free radical scavenger (II), Mg, and tert.‐amyl alcohol the sum of the yields of (III) and (IV) accounts for > 90%, the product ratio depending on the initial concentration of (II).