Abstract:A previous report has established the intermediacy of a sulfide-sulfonate ester in the one-pot conversion of an aryl mercaptan and a sulfonate ester into the corresponding trithioorthoformate. This report describes evidence for the sequential intermediacy of a bissulfide-sulfonate ester and a dithiosulfene in the conversion of the sulfide-sulfonate ester into the trithioorthoformate. A new sulfonate ester is shown to give the highest yield of trithioorthoformate.Key words: single electron transfer, sulfonate esters, sulfenes.RCsumC : Une publication antkrieure a Ctabli la participation d'un ester sulfure-sulfonate comme produit intermtdiaire dans la conversion dans un seul rtcipient d'un mercaptan arylique et d'un ester sulfonate en trithioorthoformate correspondant. Cette publication dkcrit la preuve de la participation intermkdiaire skquentielle d'un ester bisulfure-bisulfonate et d'un dithiosulfkne dans la prkparation du trithioorthoformate. On montre qu'un nouvel ester sulfonate donne les rendements les plus tlevts de trithioorthoformate.
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