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Synthesis and reactions of some dinitrodiazoquinones

✍ Scribed by Jan Bergman; Thomas Brimert


Book ID
104209353
Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
637 KB
Volume
55
Category
Article
ISSN
0040-4020

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✦ Synopsis


Some novel highly substituted diazoquinones have been synthesised in one step from simple anilines by treatment with nitric acid in sulfuric acid solution. The reaction is proposed to proceed via an N,3,4,5-tetranitroaniline which on its reaction pathway undergoes a nitro-nitrito rearrangement.


πŸ“œ SIMILAR VOLUMES


ChemInform Abstract: Synthesis and React
✍ Jan Bergman; Thomas Brimert πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 33 KB πŸ‘ 2 views

Synthesis and Reactions of Some Dinitrodiazoquinones. -Nitration of simple anilines in the system nitric acid-sulfuric acid affords novel p-diazoquinones [cf. (II)] in moderate to good yields. The reaction is proposed to go via an N,3,4,5-tetranitroaniline, which can be trapped as its O-methylnitra

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A~,lnitroso ccxnpounds c;isily react ;is nucleophilcs ~ith conjugated azoalkenes to give (~-(arylimino-N-oxide)hydraz~mes by their 1,4-addition to the a~x~-cnc system These adducts undergo an internal hetcr~x:yclizati~m process with pyra;/.ole ring formation to produce 1-alkoxycarbonyl-or I-amintx~l

Synthesis and Some Reactions of 2,4,6-Cy
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## Abstract The synthesis of 2,4,6‐cycloheptatrienethione (**1**) was accomplished by reaction of tropone and phosphorus pentasulfide. Although **1** proved to be extremely unstable in concentrated solution, its UV. spectrum was measured, the Ρ‐values being determined indirectly by hydrolysis to tr