Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Indole: History & Applications

Indole is an organic compound with the formula C6H4CCNH3. Indole is classified as an aromatic heterocycle. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered pyrrole ring. Indoles are derivatives of indole where one or more of the hydrogen atoms have been replaced by substituent groups. Indoles are widely…

Language: English [EN]
Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.
100%
More settings
100% 100% 100% 100% 100%

Indole topic overview

The analysis highlights History and Applications as prominent areas in the source structure around Indole.

Related topics
147
Source areas
9
Connected nodes
156
Extracted relationships
134
Concept neighborhoods
47
Bridge connections
156

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Chemical reactions of indole · 44 topics
Synthetic routes · 32 topics
General properties and occurrence · 23 topics
Biosynthesis and function · 12 topics
Overview · 12 topics
Medical applications · 10 topics
History · 6 topics
Detection methods · 5 topics
General references · 3 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

General properties and occurrence

History

Biosynthesis and function

Detection methods

Medical applications

Synthetic routes

Chemical reactions of indole

General references

  • ISBN ISBN (identifier)
  • Doi Doi (identifier)
  • PMID PMID (identifier)

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Indole connects Entity context

The extracted context around Indole shows recurring relationship patterns in the source. For example, Indole → Academic Press, Access, Blackwell Science, Direct, Heterocyclic Chemistry, Highly Enantioselective Iso-Pictet-Spengler Reactions, Houlihan, Indoles, Indoles Part One, ISBN, Joule, Ketoamides, Leighton, Lett, Mills, New York, Org, Oxford, PMID, San Diego Another extracted example is Indole → C2, C3, Despite, Diels-Alder, For, In, Indoles, Intramolecular, One, Only, Padwa, Pictet-Spengler. Use these groups to spot repeated connection types before inspecting the individual relationships.

Indole

Top relations

related to General references · 31
Indole → Academic Press, Access, Blackwell Science, Direct, Heterocyclic Chemistry, Highly Enantioselective Iso-Pictet-Spengler Reactions, Houlihan, Indoles, Indoles Part One, ISBN, Joule, Ketoamides, Leighton, Lett, Mills, New York, Org, Oxford, PMID, San Diego
related to Cycloadditions of indole · 12
Indole → C2, C3, Despite, Diels-Alder, For, In, Indoles, Intramolecular, One, Only, Padwa, Pictet-Spengler
related to Electrophilic substitution · 10
Indole → C2, C3, C5, For, Haack, In, N1, Since, The, Vilsmeier
related to Carbon acidity and C2 lithiation · 8
Indole → After, Bergman, C2, Katritzky, N-protected, Reaction, This, Venemalm
related to Other indole-forming reactions · 7
Indole → Bartoli, Diels, Emmerling, Möhlau, Reese, Sundberg, With
has method · 6
Indole → Common, Ehrlich's, For, HPLC, Kovács, Salkowski
related to N–H acidity and organometallic indole anion complexes · 6
Indole → C3, DMF, DMSO, Grignard, In, The
related to Basicity · 5
Indole → C3, N1, Strong, The, Unlike
related to Fischer indole synthesis · 5
Indole → Although, Emil Fischer, Fischer, One, This
related to history · 5
Indole → Adolf, Baeyer, Certain, In, Indigo

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

indoles tryptophan synthesis substituted derivatives acid c3 electrophilic benzene reaction formula aromatic methods substitution c2 also compounds isbn ring one

Indole relationships Subject–Predicate–Object triples

TTTA extracted 134 structured relationships around Indole. Examples in this analysis include Indole → is a → organic compound with the formula .mw-parser-output .template-chem2-su and Indole → is a → substituent on a larger molecule. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Indoleis aorganic compound with the formula .mw-parser-output .template-chem2-su0.90text
Indoleis asubstituent on a larger molecule0.90text
Indoleis aportmanteau of the words indigo and oleum0.90text
Indoleis adienophile0.90text
serotonininstance ofincluding neurotransmitters0.80text
hydrochloric acid caninstance ofStrong acids0.80text
howeverinstance ofStrong acids0.80text
protonate indoleinstance ofStrong acids0.80text
sodium hydride or n-butyl lithiuminstance ofso that very strong bases0.80text
water-free conditions are required for complete deprotonationinstance ofso that very strong bases0.80text
the sodium or potassium compounds tend to react with electrophiles at nitrogen-1instance ofThe more ionic salts0.80text
whereas the more covalent magnesium compoundsinstance ofThe more ionic salts0.80text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Indole bring nearby vocabulary together. In this analysis, examples include Synthesis, C3 and Fischer. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Indole
    • Synthesis
    • C3
    • Fischer
    • C2
    • Substitution
    • Electrophilic
    • Substituted
    • Acid
    • Indoles
    • See
    • Substituent
    • Molecule
  • indole
    • Synthesis
    • C3
    • Fischer
    • C2
    • Substitution
    • Electrophilic
    • Substituted
    • Acid
    • Indoles
    • See
    • Substituent
    • Molecule
  • indole alkaloids
    • Synthesis
    • C3
    • Fischer
    • C2
    • Substitution
    • Electrophilic
    • Substituted
    • Acid
    • Indoles
    • See
    • Substituent
    • Molecule
  • leimgruber–batcho indole synthesis
    • Using
    • Substituted
    • Synthesis
    • C3
    • Fischer
    • C2
    • Pka
    • See
    • Substitution
    • Electrophilic
    • Acid
    • Reactions
  • fischer indole synthesis
    • Synthesis
    • Using
    • Methods
    • Substituted
    • Pka
    • See
    • Formula
    • One
    • Reactions
    • Synthetic
    • Substitution
    • C3
  • bartoli indole synthesis
    • Using
    • Substituted
    • Synthesis
    • C3
    • Fischer
    • C2
    • Pka
    • See
    • Substitution
    • Electrophilic
    • Acid
    • Reactions
  • bischler–möhlau indole synthesis
    • Using
    • Substituted
    • Synthesis
    • C3
    • Fischer
    • C2
    • Pka
    • See
    • Substitution
    • Electrophilic
    • Acid
    • Reactions
  • cadogan-sundberg indole synthesis
    • Using
    • Substituted
    • Synthesis
    • C3
    • Fischer
    • C2
    • Pka
    • See
    • Substitution
    • Electrophilic
    • Acid
    • Reactions

Connections between topic areas Semantic bridges

For Indole, one of the stronger structural bridges in this analysis connects Indole with Chemical reactions of indole. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Indole — Chemical reactions of indole · splits 112 ⟂ 45
Indole — Synthetic routes · splits 124 ⟂ 33
Indole — General properties and occurrence · splits 133 ⟂ 24
Indole — Overview · splits 144 ⟂ 13
Indole — Biosynthesis and function · splits 144 ⟂ 13
Indole — Medical applications · splits 146 ⟂ 11
Indole — History · splits 150 ⟂ 7
Indole — Detection methods · splits 151 ⟂ 6
Indole — General references · splits 153 ⟂ 4

Map overview Semantic statistics

Indole

Nodes157
Edges156
Triples134
Avg. degree1.99
Density0.012739
Components1

Source & methodology

TTTA analyzes the structure around Indole to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History & Applications, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Indole · EN edition · Analysis: TopicsToTalkAbout

For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.