Reactions of Benzotriazolo[2,1-a]benzotriazole Derivatives. 1. Synthesis of New Insensitive High-Density Energetic Compounds
摘要:
The sequential preference of electrophilic attack on the dibenzotetraazapentalene ring system 6 has unequivocally been shown to be in the order of position 2(8) > 4(10) much greater than 1(7) and 3(9). However, nucleophilic substitution reactions with sodium azide were found to be substrate dependent. Substitution occurred at the 3(9)-position of 9 followed by elimination of hydrogen chloride to give 10 while direct substitution of azide for the 8(10)-nitro group of 2 was found to yield 13. The reactivity of the dibenzotetraazapentalene derivatives toward electrophiles and nucleophiles was exploited for the synthesis of the new heterocyclic system 14H-[1,2,5]oxadiazolo[3,4-e][1,2,5]oxadiazolo[3',4':4,5]benzotriazolo[2,1-alpha]benzotriazol-6-ium inner salt 1,8-dioxide (11). From this study the first of a new class of insensitive energetic materials 4 has been synthesized in a straightforward fashion from 2.
Reactions of Benzotriazolo[2,1-a]benzotriazole Derivatives. 1. Synthesis of New Insensitive High-Density Energetic Compounds
作者:Ganesan Subramanian、Joseph H. Boyer、Dan Buzatu、Edwin D. Stevens、Mark L. Trudell
DOI:10.1021/jo00124a024
日期:1995.9
The sequential preference of electrophilic attack on the dibenzotetraazapentalene ring system 6 has unequivocally been shown to be in the order of position 2(8) > 4(10) much greater than 1(7) and 3(9). However, nucleophilic substitution reactions with sodium azide were found to be substrate dependent. Substitution occurred at the 3(9)-position of 9 followed by elimination of hydrogen chloride to give 10 while direct substitution of azide for the 8(10)-nitro group of 2 was found to yield 13. The reactivity of the dibenzotetraazapentalene derivatives toward electrophiles and nucleophiles was exploited for the synthesis of the new heterocyclic system 14H-[1,2,5]oxadiazolo[3,4-e][1,2,5]oxadiazolo[3',4':4,5]benzotriazolo[2,1-alpha]benzotriazol-6-ium inner salt 1,8-dioxide (11). From this study the first of a new class of insensitive energetic materials 4 has been synthesized in a straightforward fashion from 2.
Reactions of Benzotriazolo[2,1-<i>a</i>]benzotriazole Derivatives. 2. An Unusual Hydrolysis−Oxidation Reaction
作者:Ganesan Subramanian、Joseph H. Boyer、Mark L. Trudell、William M. Koppes、Michael E. Sitzmann, and、Lori A. Nock、Richard Gilardi、Thomas P. Russell