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Related Concept Videos

Aromatic Compounds: Overview01:25

Aromatic Compounds: Overview

13.2K
In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated...
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Aromatic Hydrocarbon Anions: Structural Overview01:18

Aromatic Hydrocarbon Anions: Structural Overview

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Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
3.5K
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene01:13

Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene

7.3K
Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
7.3K
NMR Spectroscopy of Aromatic Compounds01:14

NMR Spectroscopy of Aromatic Compounds

6.0K
Aromatic compounds can be identified or analyzed using proton NMR and carbon‐13 NMR. Typically, aromatic hydrogens or hydrogens directly bonded to the aromatic rings are strongly deshielded by the aromatic ring current. Therefore, they absorb in the range of 6.5–8.0 ppm in proton NMR spectra. For instance, aromatic hydrogens directly bonded to the benzene ring absorb at 7.3 ppm. However, aromatic hydrogens of larger rings absorb farther upfield or downfield than the ideal range.
6.0K
Electrophilic Aromatic Substitution: Overview01:16

Electrophilic Aromatic Substitution: Overview

13.3K
In an electrophilic aromatic substitution reaction, an electrophile substitutes for a hydrogen of an aromatic compound.
13.3K
Five-Membered Heterocyclic Aromatic Compounds: Overview01:13

Five-Membered Heterocyclic Aromatic Compounds: Overview

5.1K
Heterocyclic aromatic compounds are cyclic compounds that are aromatic and have one or more heteroatoms—atoms other than carbon, in the ring. Depending upon the number of atoms present in the ring, they can be either five or six-membered. Examples of five-membered heterocyclic aromatic compounds include pyrrole, furan, thiophene, and imidazole. Pyrrole consists of one nitrogen atom having one lone pair of electrons. Furan and thiophene have one oxygen and one sulfur heteroatom,...
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A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones
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A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones

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Novel Aromatics: From Synthesis to Applications.

Nazario Martín1, Yoshito Tobe2

  • 1Departamento de Química Orgánica, Facultad de C. Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain.

Chempluschem
|January 22, 2020
PubMed
Summary

This special issue explores novel aromatic compounds, covering their synthesis, properties, and applications. Discover advancements in acenes, annulenes, azulenes, fullerenes, and more.

Keywords:
2017editorialnovel aromaticsspecial issue

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Area of Science:

  • Organic Chemistry
  • Materials Science

Background:

  • This special issue focuses on novel aromatic compounds, stemming from the 2015 International Meeting on Aromatic Compounds (ISNA-16).
  • Guest-edited by Nazario Martín and Yoshito Tobe, it highlights recent advancements in the field.

Discussion:

  • Contributions cover the synthesis, properties, and applications of diverse aromatic systems.
  • Key areas include acenes, annulenes, azulenes, fullerenes, oligo(thiophene)s, and porphyrin/phthalocyanines.

Key Insights:

  • The issue presents top-quality research on the expanding landscape of aromaticity.
  • It showcases the versatility and potential of these compounds in various scientific domains.

Outlook:

  • Future research directions and emerging applications of novel aromatic compounds are implied.
  • This collection serves as a valuable resource for researchers in organic chemistry and materials science.