作者:Lidia S. Konstantinova、Oleg A. Rakitin、Charles W. Rees、Tomás Torroba、Andrew J. P. White、David J. Williams
DOI:10.1039/a904386a
日期:——
better yield, the best being from the N-methylcarbamate 8e (30%). The derivative 10 of other benzamidoximes, with electron releasing substituents gives the analogous 5-cyano-3-aryl-1,2,4-thiadiazole 4-oxides 11 in comparable yield. The N-oxides are shown to be the 4-isomers by analysis of the NMR and mass spectra of 15N-labelled and unlabelled products and X-ray structure determination of the derived