C<sub>6</sub>N<sub>10</sub>O<sub>4</sub>: Thermally Stable Nitrogen-Rich Inner Bis(diazonium) Zwitterions
作者:Yongxing Tang、Gregory H. Imler、Damon A. Parrish、Jean’ne M. Shreeve
DOI:10.1021/acs.orglett.9b02875
日期:2019.10.18
Two nitrogen-rich inner bis(diazonium) salts, the 4,4'-dinitro-5,5'-diazo-2,2'-bisimidazole (2) and the 4,4'-dinitro-5,5'-diazo-3,3'-bispyrazole (4) zwitterions, are described. Compound 2 was synthesized unexpectedly from the nitration of 4,4'-dinitro-5,5'-diamino-1H,1'H-2,2'-bisimidazole (1) in a mixture of trifluoroacetic anhydride and 100% nitric acid. Both 2 and 4 show good thermal stability, especially
两种富含氮的内部双(重氮)盐,4,4'-二硝基-5,5'-重氮-2,2'-双咪唑(2)和4,4'-二硝基-5,5'-重氮描述了-3,3′-双吡唑(4)两性离子。由三氟乙酸酐和100%硝酸的混合物中的4,4'-二硝基-5,5'-二氨基-1H,1'H-2,2'-双咪唑(1)硝化意外地合成了化合物2。2和4均显示出良好的热稳定性,特别是2的分解温度为199°C,在所有报道的无氢富氮重氮盐中均是最高的。