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Indazole is another name of benzopyrazole which has the pyrazole ring
(five-membered unsaturated ring structure composed of three carbon atoms and two
nitrogen atoms at 1,2 positions) fused to benzene ring. Indole is the compound
that pyrrole (haing one nitrogen atom) is fused to benzene ring. There are
tautomerer of indole. They are called indolenine (unsubstituted 3H-indole) The
structural isome of indole is called isoindole. Indoline is dihydroindole.
Benzimidazole is the compound that imidazole ring (containing two nitrogen atoms
at nonadjacent positions) is fused to benzene. These structure compounds are
important in agrochemical industry. They are fundamental structures of
fungicides, herbicides, and plant growth regulators. These compounds are used in
the production of amino acids, perfumes, colorants, and medicines. Indazole
class compounds can be applied in the field that photodynamic activity is
needed.
Nitro- is the prefix indicating presence of the group -NO2. Historically They
are abundant in dyes and explosives. Nitro compounds, organic hydrocarbons
having one or more NO2 groups bonded via nitrogen to the carbon framework, are
versatile intermediate in organic synthesis of;
- Michael
addition
- Reduction
- Henry Reaction (Nitro-aldol reaction)
- Nef
reaction
- O-Alkylation
- Cycloaddition
- Substitution, Elimination,
Conversion reaction
- Alkylation, Acylation, and Halogenation
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