501 − 11 M α 一 Tocoperol was reacted with an alkylperoxy ! radica ! at 37 ℃ in ethanol or benzene , 2 , 2 ' −azobis ( 2 , 4 −dimethylvaleronitrile )( AMVN )being used to generate the peroxyl radical . The reaction produets were 8a − ( 1 − cyano − 1, 3 − dimethyDbutylperoxy 一 α 一 tocopherone and some other compounds . Methyl linoleate − peroxy ユ radicals were generated by the reaction of 皿 e 七hyl linoleate with AMVN and reacted with α 一 tocopherol. The reaction products were four stereeisomers

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... methy113 − ( 8a − peroxy . α 一 tocopherone ) − 9 ( Z ) , ユ1 ( E ) − octadecadienQate and four stereoisomers of methyl 9 − ( 8a − peroxy 一 α 一 tocopherone ) . 10 ( E ) , 12 ( Z ) − octadecadienoate . FrQ 皿 these reaction products of α 。 tocopherol, the reac 七ion mechanism of α 一 tocopherol with peroxyl radicals was discussed.