On the reaction of benzohydroxamic acids with Lawesson's reagent

W Przychodzeń, A Chimiak

Index: Przychodzen; Chimiak Phosphorus, Sulfur and Silicon and Related Elements, 1998 , vol. 143, p. 77 - 83

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Citation Number: 9

Abstract

Abstract Reaction of Lawesson's Reagent (LR) with two N-alkyl benzohydroxamic acids is presented. In addition to the desired thiohydroxamic acids 2, the reduction process provides amides 3 and thioamides 4. An unexpectedly pronounced solvent effect on the course of the reaction was observed. The best yields (40–50%) of 2a were obtained in THF, and in this solvent amide 3a was not formed. In HMPA solution the amide 3a and the thioamide 4a ...