A Ceric Ammonium Nitrate N-Dearylation of <i>N</i>-<i>p</i>-Anisylazoles Applied to Pyrazole, Triazole, Tetrazole, and Pentazole Rings: Release of Parent Azoles. Generation of Unstable Pentazole, HN<sub>5</sub>/N<sub>5</sub><sup>-</sup>, in Solution
作者:Richard N. Butler、John M. Hanniffy、John C. Stephens、Luke A. Burke
DOI:10.1021/jo702423z
日期:2008.2.1
pentazole ring. The unstable HN5/N5- produced at −40 °C did not build up in the solution but degraded to azide ion and nitrogen gas with a short lifetime. The 15N-labeling of the N3- ion obtained from all samples proved unequivocally that it came from the degradation of HN5 (tautomeric forms) and/or its anion N5- in the solution.
N‐dimethylaminophenyl‐, and dicyanoimidazopentazole were obtained via different synthetic routes. Cesium, barium, potassium, and sodium salts of the arylpentazoles bearing acidic hydrogens were prepared. NMR spectra (1H, 13C) are reported for the arylpentazoles, their corresponding arylazides, and their salts.
p -Nitrophenyl-,p -methoxyphenyl-,p -hydroxyphenyl-,p -t丁基苯基,p -HOSO 2苯基,15 N- p - N,N- -dimethylaminophenyl-,15 Ñ 2 - p - N, N-二甲基氨基苯基-和二氰基咪唑并戊唑是通过不同的合成途径获得的。制备带有酸性氢的芳基戊唑的铯,钡,钾和钠盐。报告了芳基戊唑,其相应的芳基叠氮化物及其盐的NMR谱(1 H,13 C)。
Ugi et al., Chemische Berichte, 1958, vol. 91, p. 2324,2328
作者:Ugi et al.
DOI:——
日期:——
Butler, Richard N.; Collier, Seamus; Fleming, Adrienne F. M., Journal of the Chemical Society. Perkin transactions II, 1996, # 5, p. 801 - 804
作者:Butler, Richard N.、Collier, Seamus、Fleming, Adrienne F. M.
DOI:——
日期:——
Experimental Detection of the Pentaazacyclopentadienide (Pentazolate) Anion, cyclo-N5â This work was funded predominantly by the Defense Advanced Research Projects Agency, with additional support from the Air Force Office of Scientific Research and the National Science Foundation. The mass spectrometer instrumentation at UCSB was supported under the Army Research Office Award no. DAAD19-00-1-0026. We thank Dr. Robert Corley, Dr. Arthur Morrish, Dr. Don Woodbury, Dr. Michael Berman, and Prof. W. Kaska for their support, and Dr. Michael Gerken, Dr. Thorsten Schroer, Dr. Stefan Schneider, Dr. Ralf Haiges, Dr. Ross Wagner, and Dr. Suresh Suri for their collaboration and stimulating discussions.
作者:Ashwani Vij、James G. Pavlovich、William W. Wilson、Vandana Vij、Karl O. Christe