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The reaction of acyl peroxides with 2,2,6,6-tetramethylpiperidinyl-1-oxy

โœ Scribed by Graeme Moad; Ezio Rizzardo; David H. Solomon

Book ID
104241460
Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
233 KB
Volume
22
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Benzoyl and lauroyl peroxides undergo induced decomposition by 2,2,6,6_tetramethylpiperidinyl-1-oxy to form acyloxy radicals and carboxylic acid in equimolar amounts. Formation of the carboxylic acid does not involve free acyloxy radicals.

In connection with studies of the interaction of vinyl monomers with acyloxy radicals using nitroxides as radical trapping agentsIp we have investigated the reactions of benzoyl and lauroyl (dodecanoyl) peroxides with 2,2,6,6-tetramethylpiperidinyl-1-oxy (1).

The nitroxide (l)(O.OOS -0.05M) reacts with benzoyl peroxide (0.002 -0.02M) in degassed styrene at 60ยฐ C to form the nitrone (S), benzoic acid, and products derived from the interaction of benzoyloxy radicals with monomer in the ratio 0.3:1:1.3 Similar use of lauroyl peroxide affords the nitrone (5) and lauric acid amongst other products. Examination of the

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