The preparation of several N-monosubstituted trichlorothioacetamides by thionation of the corresponding acetamides, with the use of Heimgartner's reagent is described. In contrast to the corresponding amides which umdergo base-induced beta-elimination of chloroform, the title compounds undergo an unexpected rearrangement to thiooxamides. The reaction mechanism is discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.
GERTSYUK, M. N.;DOROXOV, V. I.;SAMARAJ, L. I., ZH. ORGAN. XIMII, 1985, 21, N 4, 903-904