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Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

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The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para...
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Antihypertensive Drugs: Thiazide-Class Diuretics01:15

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Thiazide diuretics are sulfonamide derivatives featuring a benzothiadiazine ring system in their molecular structure. Based on this structure, thiazide diuretics can be categorized into two groups: thiazide-type and thiazide-like diuretics. Thiazide-type diuretics, including hydrochlorothiazide and chlorothiazide, consist of a benzothiadiazine backbone with an attached sulfonamide group. Thiazide-like diuretics, such as chlorthalidone and indapamide, lack the thiazide ring but demonstrate...
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Nomenclature of Aryl and Heterocyclic Amines01:10

Nomenclature of Aryl and Heterocyclic Amines

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The simplest aromatic amine is phenylamine, which contains an –NH2 functionality directly attached to an aromatic ring. The name aniline is designated for this skeleton. As shown in Figure 1, the common names of the functionalized anilines involve prefixes ortho-, meta-, and para- to indicate the substitution position. Different functionalized aniline derivatives also have notable trivial names.
3.2K
Five-Membered Heterocyclic Aromatic Compounds: Overview01:13

Five-Membered Heterocyclic Aromatic Compounds: Overview

5.9K
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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Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

4.0K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
4.0K
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions01:20

Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions

2.6K
Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
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Updated: Feb 25, 2026

Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
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Thiazole Containing Heterocycles with Antimalarial Activity.

Mukesh Kumar Kumawat1

  • 1Anand College of Pharmacy, Keetham, Agra-282006, Uttar Pradesh, India.

Current Drug Discovery Technologies
|July 27, 2017
PubMed
Summary

Researchers reviewed studies on thiazole derivatives, identifying their potential as new antimalarial drugs. Structure-activity relationships were analyzed to guide the development of novel antimalarial compounds.

Keywords:
Malariaantimalarial agentsbiological activitiesthiazole derivativesthiazolesthiazoles as antimalarials.

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Area of Science:

  • Medicinal Chemistry
  • Organic Chemistry
  • Pharmacology

Background:

  • Heterocyclic compounds, particularly those with a five-membered ring like thiazole, are crucial in medicinal chemistry.
  • Thiazole derivatives exhibit diverse biological activities and are present in established drugs such as Sulfathiazole and Ritonavir.
  • The ongoing search for novel biologically active compounds necessitates continued investigation into thiazole derivatives.

Purpose of the Study:

  • To review existing literature on thiazole derivatives for their potential as antimalarial agents.
  • To identify and analyze structure-activity relationships (SAR) of substituted thiazole nuclei.
  • To explore novel thiazole-based drug candidates for malaria treatment.

Main Methods:

  • A structured literature search of bibliographic databases was conducted.
  • Inclusion/exclusion criteria were applied to select peer-reviewed research.
  • Deductive qualitative content analysis was used to analyze study interventions and findings.

Main Results:

  • Fifteen papers were included, detailing various biological activities of thiazole nuclei.
  • Seven papers specifically highlighted the impact of thiazoles as antimalarials.
  • The review successfully identified and established SAR for substituted thiazole nuclei with antimalarial potential.

Conclusions:

  • This review synthesizes current research on thiazole derivatives as potential antimalarial drug candidates.
  • It underscores the importance of thiazole-based compounds in the development of new antimalarial therapies.