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The syntheses of five new 4-alkyl-2-iodosobenzoic acids (3) are described. The iodine atom was introduced by ortho-directed lithiation of 4-alkylbenzyl alcohols followed by treatment with I 2 . The catalytic effectiveness of each of the products in the hydrolysis of 4-nitrophenyl diphenyl phosphate in microemulsions was studied. The 4-methyl- and 4-ethyl-substituted products were each found to be significantly better catalysts than the standard nonalkylated 2-iodosobenzoic acid (3, R = H). These results would indicate that microemulsions of these materials may find use in detoxification procedures

Hydrolyse du sulfure d'ethyle et de chloro-2 ethyle et du sulfure de methyle et de chloro-2 ethyle. Comparaison a l'hydrolyse du chlorure de t-butyle. Mise en evidence d'un mecanisme S N 1 avec assistance anchimere de l'atome de soufre pour former un ion sulfonium cyclique comme intermediaire de reaction

Hydrolyse des bis-[chloro-2 ethyl] sulfure, chloro-2' ethylthio-2 ethanol en presence de thio-2,2' bis-ethanol. Identification par les spectres RMN 13 C des composes sulfonium obtenus