THE REACTION OF NITROUS ACID WITH 4-SUBSTITUTED-THIOSEMICARBAZIDES
作者:Eugene Lieber、C. N. Pillai、Ralph D. Hites
DOI:10.1139/v57-116
日期:1957.8.1
degradation to an isothiocyanate and azide ion, and (2) isomerization to a 1-substituted-tetrazole-5-thiol, the extent of path (1) or (2) depending on the nature of the substituent. Path (1) predominates when the substituent is alkyl, whereas when the substituent is aryl both paths (1) and (2) occur, the relative proportion depending on the electrical nature of the aromatic group, path (2) increasing as the
An efficient protocol for the formation of aminothiatriazoles from thiocarbamoylimidazolium salts
作者:Marisa G Ponzo、Ghotas Evindar、Robert A Batey
DOI:10.1016/s0040-4039(02)01714-8
日期:2002.10
protocol for the formation of substituted aminothiatriazoles from thiocarbamoylimidazolium salts is outlined. Thiocarbamoylimidazolium salts are synthesized from the corresponding amines by treatment with thiocarbonyldiimidazole (TCDI) followed by methylation with iodomethane. Thiocarbamoylimidazolium salts are shown to act as thiocarbamoyl cation equivalents. Substitution of the salts by azide anion
Convenient one-pot synthesis of 5-(substituted amino)-1,2,3,4-thiatriazoles
作者:Alan R. Katritzky、Geeta Meher、Tamari Narindoshvili
DOI:10.1135/cccc2009015
日期:——
5-(Substituted amino)-1,2,3,4-thiatriazoles 15a–15i were conveniently synthesized in 73–97% yields in a one-pot procedure from bis(1H-benzotriazol-1-yl)methanethione and amines.