Synthesis of Trinitromethyl- and Dinitromethyl-Substituted Azoles Using Nitrate Salts in Sulfuric Acid
作者:Jean'ne Shreeve、Venugopal Thottempudi
DOI:10.1055/s-0031-1289736
日期:2012.4
Synthesis of trinitromethyl and dinitromethyl-substituted azoles employing a mild and efficient nitration method has been developed using a mixture of sulfuric acid and an inorganic nitrate salt XNO3, where X = NH4 +, Na+, K+. This methodology exhibits clear advantages over the more popular mixed acids nitration approach. Various nitro functionalities such as C-trinitromethyl, N-trinitromethyl, and
Synthesis and properties of 1-dinitromethyl-3-R-1,2,4-triazoles
作者:T. P. Kofman、A. E. Trubitsyn、I. V. Dmitrienko、E. Yu. Glazkova、I. V. Tselinskii
DOI:10.1134/s1070428007050193
日期:2007.5
Reductive denitration of 1-trinitromethyl-3-R-1,2,4-triazoles by KI or NH2OH followed by the treatment of the formed 1-dinitromethyl-3-R-1,2,4-triazoles salts with sulfuric acid yielded dinitromethyl compounds (R = H, N-3, Cl, NO2), sufficiently strong CH-acids (pK(a) 1.37-0.12) whose typical reactions are similar to those of gem-dinitrocompounds from the aliphatic series. The spectral data and the analysis of correlation relations between pK(a) of 1-dinitromethyl-3-R-1,2,4-triazoles and the substituent constants confirm that their structure is analogous to that of the majority of compounds belonging to the mentioned series.