Synthesis of 4,5-disubstituted-3-trihalomethylisothiazoles
摘要:
Herein, we describe the synthesis of 4,5-disubstituted-3-trihalomethylisothiazoles from trihaloacetonitriles and 2-cyanothioacetamides or 2-ethoxycarbonylthioacetamides. The reactivity of the necessary trihaloacetonitriles has a significant impact on the observed reaction pathways. Reactions with CF3CN require an oxidant to mediate cyclization, while CCl3CN functions as both the reactant and oxidant. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis of 4,5-disubstituted-3-trihalomethylisothiazoles
作者:Michael P. Zawistoski、Shannon M. Decker、David A. Griffith
DOI:10.1016/j.tetlet.2009.10.051
日期:2009.12
Herein, we describe the synthesis of 4,5-disubstituted-3-trihalomethylisothiazoles from trihaloacetonitriles and 2-cyanothioacetamides or 2-ethoxycarbonylthioacetamides. The reactivity of the necessary trihaloacetonitriles has a significant impact on the observed reaction pathways. Reactions with CF3CN require an oxidant to mediate cyclization, while CCl3CN functions as both the reactant and oxidant. (C) 2009 Elsevier Ltd. All rights reserved.