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Acetylene mit Elektronendonator- und Elektronenakzeptorgruppen

Gais, H.-J. ; Hafner, Klaus ; Neuenschwander, M. (2022)
Acetylene mit Elektronendonator- und Elektronenakzeptorgruppen.
In: Helvetica Chimica Acta, 1969, 52 (8)
doi: 10.26083/tuprints-00022406
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Acetylene mit Elektronendonator- und Elektronenakzeptorgruppen
Language: German
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 1969
Publisher: Wiley-VCH
Journal or Publication Title: Helvetica Chimica Acta
Volume of the journal: 52
Issue Number: 8
DOI: 10.26083/tuprints-00022406
Corresponding Links:
Origin: Secondary publication service

Acetylenes having both electrondonating and electronaccepting groups (1) may be obtained in good yield from the correspondingly substituted olefines via bromination and elimination of HBr. The reaction of the acetylene aldehyde 1a with proton acids yields, after rearrangement of the primary adducts, the β-substituted acrylamides. Addition of nucleophiles leads to the β-disubstituted α.β-unsaturated carbonyl compounds. With hydrazines one obtains pyrazoles and pyrazolones. The acetylenes 1 undergo [2+2]-, [2+3]- and [2+4]-cycloaddition reactions.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-224067
Classification DDC: 500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry > Clemens-Schöpf-Institut > Organ Chemistry
Date Deposited: 28 Nov 2022 09:26
Last Modified: 21 Apr 2023 12:53
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22406
PPN: 50716041X
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