Synthesis and Biological Activity of Some Novel <i>N</i>-Aryl-<i>N</i>′-[5-(pyrid-4-yl)-1,3,4-thiadiazol-2-yl]ureas
作者:Xin-Jian Song、Xiao-Hong Tan、Yan-Gang Wang
DOI:10.1080/10426500701415857
日期:2007.6.14
With the aim of searching for biologically active urea compounds, a series of new N-aryl-N′-[5-(pyrid-4-yl)-1,3,4-thiadiazol-2-yl]ureas have been designed and synthesized. Their structures were confirmed by IR, 1H NMR, and elemental analysis. The crystal structure of 3f was further determined by single crystal X-ray diffraction to obtain the structural information on this class of compounds. The preliminary
Ethenolate Transfer Reactions: A Facile Synthesis of Vinyl Esters
作者:Srinivasan Kaliyaperumal Appaye、Satish Pandurang Nikumbh、Rajeshwar Reddy Govindapur、Shyamapada Banerjee、Dinesh S. Bhalerao、Unniaran K. Syam Kumar
DOI:10.1002/hlca.201300396
日期:2014.8
and efficient metal‐free ethenolate transfer reaction has been elaborated in moderate‐to‐high yields from vinyl acetate. This reaction was accomplished by generation of potassium ethenolate, which was then reacted with homo and mixed anhydrides of aliphatic, aryl and heteroaryl acids, to yield the corresponding vinylesters. The utility of thus generated vinylesters was then probed by carrying out intramolecular