Desulfurization Strategy in the Construction of Azoles Possessing Additional Nitrogen, Oxygen or Sulfur using a Copper(I) Catalyst
作者:Srimanta Guin、Saroj Kumar Rout、Anupal Gogoi、Shyamapada Nandi、Krishna Kanta Ghara、Bhisma K. Patel
DOI:10.1002/adsc.201200408
日期:2012.10.8
A tandem and convergent approach to various N-, O-, or S-containing azoles has been developed by exploiting the thiophilic property of copper(I) iodide used in a catalytic quantity. The present protocol gives access to amino-substituted tetrazoles, triazoles, oxadiazoles and thiadiazoles via oxidative desulfurization of their respective precursors followed by inter- or intramolecular attack of suitable
GRAPHICAL ABSTRACT Abstract Two series of thiosemicarbazide derivatives and three series of s-triazolederivatives have been synthesized. All of these compounds were tested for their in vitro antibacterial activity against Gram-positive and Gram-negative bacterial strains. Among tested thiosemicarbazide derivatives, the best bioactivity was detected for two 1-formylthiosemicarbazides with 3-/4-tolyl