Peculiarities of the reaction of 2,2,6,6-tetramethylpiperidin-1-oxyl with Cp2TiEtCl

Article abstract of DOI:10.1007/BF01430637

The reaction of 2,2,6,6-tetramethylpiperidin-1-oxyl (1) with Cp₂TiEtCl (2) has been studied. The consumption of 1 and evolution of gaseous products (ethane, ethylene) proceed with autoacceleration. Increasing the 1 : 2 molar ratio leads to inhibition of the autoacceleration. The fact that the yield of ethane is higher than that of ethylene indicates that the reaction proceeds via S_R2 substitution of the ethyl group in Cp₂TiEtCl for radical 1. The mechanism of the substitution is synchronous. A kinetic model of the reaction has been proposed and substantiated.