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Related Concept Videos

Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN101:14

Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN1

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Treating arylamines with nitrous acid gives aryldiazonium salts that are effective substrates in nucleophilic aromatic substitution reactions. The diazonio group in these salts can be easily displaced by different nucleophiles, yielding a wide variety of substituted benzenes. The leaving group departs as nitrogen gas, and this easy elimination is the driving force for the substitution reaction.
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo,...
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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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Related Experiment Video

Updated: Mar 18, 2026

Lethality Bioassay Using Artemia salina L.
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Two New Compounds from Artemisia sacrorum.

Qinghu Wang, Rongjun Wu, Narenchaoketu Han

    Natural Product Communications
    |July 12, 2016
    PubMed
    Summary

    Two novel compounds, sacric acid A and sacric acid B, were identified from Artemisia sacrorum Ledeb. Their structures were elucidated using advanced spectroscopic and mass spectrometry methods.

    Area of Science:

    • Natural Product Chemistry
    • Organic Chemistry
    • Pharmacognosy

    Background:

    • Artemisia sacrorum Ledeb. is a plant species with potential medicinal properties.
    • Isolation and characterization of bioactive compounds from natural sources are crucial for drug discovery.

    Purpose of the Study:

    • To isolate and elucidate the structures of new compounds from Artemisia sacrorum Ledeb.
    • To report the first structural characterization of sacric acid A and sacric acid B.

    Main Methods:

    • Extraction of Artemisia sacrorum Ledeb. using EtOAc.
    • Structure elucidation employing UV, IR, 1D and 2D NMR spectroscopy, and ESI-MS.

    Main Results:

    • Two new compounds, sacric acid A (1) and sacric acid B (2), were successfully isolated.

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  • Comprehensive spectroscopic data confirmed the unique structures of the isolated compounds.

    • Conclusions:

    • The study successfully identified and characterized two novel compounds from Artemisia sacrorum Ledeb.
    • This research contributes to the understanding of the chemical constituents of this plant species.