Reaction products of α‐tocopherol with methyl linoleate‐peroxyl radicals

Abstract α‐Tocopherol was reacted with methyl linoleateperoxyl radicals at 37°C. The peroxyl radicals were generated by the reaction of methyl linoleate with a free radical initiator, 2,2′‐azo bis (2,4‐dimethylvaleronitrile). The primary products of α‐tocopherol with methyl linoleate‐peroxyl radicals were isolated by reversephase and normal‐phase high performance liquid chromatography (HPLC), and their structures were characterized by ultraviolet (UV), infrared (IR), 1 H and 13 C nuclear magnetic resonance (NMR) and mass spectrometry (MS). There were four stereoisomers of methyl 13‐(8a‐peroxy‐α‐tocopherone)‐9( Z ),11( E )‐octadecadienoate and four stereoisomers of methyl9‐(8a‐peroxy‐α‐tocopherone)‐10( E ),12( Z )‐octadecadienoate.