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Related Concept Videos

Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
Radical Chain-Growth Polymerization: Overview01:10

Radical Chain-Growth Polymerization: Overview

Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...
Structure and Nomenclature of Alcohols and Phenols02:23

Structure and Nomenclature of Alcohols and Phenols

Overview
Alcohols are one of the most important functional groups in organic chemistry. The name of alcohol comes from the hydrocarbon from which it is derived. Alcohols are organic molecules containing the functional hydroxyl or –OH group directly bonded to carbon. Phenols have an OH group directly attached to a benzene ring. While alcohols are colorless, phenol is a white crystalline compound with a characteristic "hospital smell" odor.
As with other organic compounds, alcohols and phenols...
Nomenclature of Aromatic Compounds with Multiple Substituents01:11

Nomenclature of Aromatic Compounds with Multiple Substituents

When more than one substituent is present on the benzene ring, the IUPAC nomenclature depends on the number of substituents present.
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...
Five-Membered Heterocyclic Aromatic Compounds: Overview01:13

Five-Membered Heterocyclic Aromatic Compounds: Overview

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, respectively.

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Related Experiment Video

Updated: Jun 5, 2026

Facile Preparation of 4-Substituted Quinazoline Derivatives
11:51

Facile Preparation of 4-Substituted Quinazoline Derivatives

Published on: February 15, 2016

6-Methyl-2,4-diphenyl-quinoline.

Xing Huo1, Yanfen Xu, Xinyun Li

  • 1Department of Chemistry, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
PubMed
Summary
This summary is machine-generated.

This study details a novel three-component synthesis of a C(22)H(17)N compound. The reaction involves benzaldehyde, 1-ethynylbenzene, and p-toluidine, utilizing copper(I) iodide catalysis in an ionic liquid medium.

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Green Synthesis of Quinoline-Based Ionic Liquid
05:59

Green Synthesis of Quinoline-Based Ionic Liquid

Published on: September 27, 2024

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Last Updated: Jun 5, 2026

Facile Preparation of 4-Substituted Quinazoline Derivatives
11:51

Facile Preparation of 4-Substituted Quinazoline Derivatives

Published on: February 15, 2016

Green Synthesis of Quinoline-Based Ionic Liquid
05:59

Green Synthesis of Quinoline-Based Ionic Liquid

Published on: September 27, 2024

Area of Science:

  • Organic Chemistry
  • Supramolecular Chemistry
  • Materials Science

Background:

  • C-H activation is a key strategy in modern organic synthesis.
  • Ionic liquids offer unique reaction environments and catalytic properties.
  • Understanding intermolecular interactions is crucial for designing novel materials.

Purpose of the Study:

  • To synthesize a novel C(22)H(17)N compound.
  • To investigate the catalytic role of copper(I) iodide in a three-component reaction.
  • To analyze the intermolecular interactions within the crystal structure of the product.

Main Methods:

  • A three-component reaction involving benzaldehyde, 1-ethynylbenzene, and p-toluidine.
  • Copper(I) iodide (CuI) catalyzed C-H activation of 1-ethynylbenzene.
  • Reaction conducted in the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]).
  • X-ray crystallography to determine molecular structure and intermolecular interactions.

Main Results:

  • Successful synthesis of the target C(22)H(17)N compound.
  • Identification of C-H⋯π interactions as the most significant weak interactions in the crystal lattice.
  • Dihedral angles between phenyl and quinoline rings determined as 43.3(3)° and 21.4(3)°.

Conclusions:

  • The study presents an efficient synthetic route to a complex organic molecule.
  • The findings highlight the importance of C-H activation and ionic liquid catalysis.
  • The detailed structural analysis provides insights into the supramolecular assembly driven by C-H⋯π interactions.