Reaction of 5-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide with electrophilic reagents: Bromine and nitric acid

Reactions of 5-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide with bromine and nitric acid lead to the electrophilic substitution of the hydrogen atom in the meta -position with respect to the nitro group. At thebromination the primarily formed 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohe...

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Vydáno v:Russian journal of organic chemistry Ročník 49; číslo 8; s. 1208 - 1214
Hlavní autoři: Samsonov, V. A., Gatilov, Yu. V., Savel’ev, V. A.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Boston Springer US 01.08.2013
Springer Nature
Témata:
Chemistry
Chemistry and Materials Science
Chemistry, Organic
Organic Chemistry
Physical Sciences
Science & Technology
Bromine
Furoxane
Benzimidazole
Cyclohexane
Electrophilic Substitution
ISSN:1070-4280, 1608-3393
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Abstract Reactions of 5-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide with bromine and nitric acid lead to the electrophilic substitution of the hydrogen atom in the meta -position with respect to the nitro group. At thebromination the primarily formed 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide when kept in the solution loses an oxygen atom forming 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohexane] 1-oxide and an isomerization product, 8-bromo-6-nitrospiro[3 H -[2,1,4]benzoxadiazine-3,1′-cyclohexane] 4-oxide. The latter exposed to light turns into 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide. The reaction of the initial 1,3-dioxide with nitric acid afforded 4,6-dinitrospiro[benzimidazole-2,1′-cyclohexan]-7-ol 1-oxide whose heating in o -dichlorobenzene resulted in 3,5-dinitro-1,8-diazatricyclo[7.5.0.0 2,7 ] tetradeca-2(7),3,5,8-tetraen-6-ol.
AbstractList Reactions of 5-nitrospiro[benzimidazole-2,1'-cyclohexane] 1,3-dioxide with bromine and nitric acid lead to the electrophilic substitution of the hydrogen atom in the meta-position with respect to the nitro group. At thebromination the primarily formed 4-bromo-6-nitrospiro[benzimidazole-2,1'-cyclohexane] 1,3-dioxide when kept in the solution loses an oxygen atom forming 4-bromo-6-nitrospiro[benzimidazole-2,1'-cyclohexane] 1-oxide and an isomerization product, 8-bromo-6-nitrospiro[3H-[2,1,4]benzoxadiazine-3,1'-cyclohexane] 4-oxide. The latter exposed to light turns into 4-bromo-6-nitrospiro[benzimidazole-2,1'-cyclohexane] 1,3-dioxide. The reaction of the initial 1,3-dioxide with nitric acid afforded 4,6-dinitrospiro[benzimidazole-2,1'-cyclohexan]-7-ol 1-oxide whose heating in o-dichlorobenzene resulted in 3,5-dinitro-1,8-diazatricyclo[7.5.0.0(2,7)] tetradeca-2(7),3,5,8-tetraen-6-ol.
Reactions of 5-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide with bromine and nitric acid lead to the electrophilic substitution of the hydrogen atom in the meta -position with respect to the nitro group. At thebromination the primarily formed 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide when kept in the solution loses an oxygen atom forming 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohexane] 1-oxide and an isomerization product, 8-bromo-6-nitrospiro[3 H -[2,1,4]benzoxadiazine-3,1′-cyclohexane] 4-oxide. The latter exposed to light turns into 4-bromo-6-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide. The reaction of the initial 1,3-dioxide with nitric acid afforded 4,6-dinitrospiro[benzimidazole-2,1′-cyclohexan]-7-ol 1-oxide whose heating in o -dichlorobenzene resulted in 3,5-dinitro-1,8-diazatricyclo[7.5.0.0 2,7 ] tetradeca-2(7),3,5,8-tetraen-6-ol.
Author Gatilov, Yu. V.
Samsonov, V. A.
Savel’ev, V. A.
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Cites_doi 10.1021/jp953141+
10.1107/S0108767307043930
10.1016/j.ejmech.2009.06.014
10.1134/S1070428012030116
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Keywords Bromine
Furoxane
Benzimidazole
Cyclohexane
Electrophilic Substitution
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Snippet Reactions of 5-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide with bromine and nitric acid lead to the electrophilic substitution of the hydrogen atom...
Reactions of 5-nitrospiro[benzimidazole-2,1'-cyclohexane] 1,3-dioxide with bromine and nitric acid lead to the electrophilic substitution of the hydrogen atom...
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Physical Sciences
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Title Reaction of 5-nitrospiro[benzimidazole-2,1′-cyclohexane] 1,3-dioxide with electrophilic reagents: Bromine and nitric acid
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