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Synthese von ‘Push-Pull’-Oligoacetylenen

✍ Scribed by Andreas Bartlome; Urs Stämpfli; Markus Neuenschwander

Publisher
John Wiley and Sons
Year
1991
Tongue
German
Weight
575 KB
Volume
74
Category
Article
ISSN
0018-019X

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✦ Synopsis

Synthesis of ‘Push‐Pull’‐OligoAcetylenes

‘Push‐pull’ triacetylenes 11a, b, c, as well as ‘push‐pull’ tetraacetylene 13b have been prepared by reaction of the corresponding trichloroene(oligoinyl)amines 9 and 10 with 2 mol‐equiv. of BuLi followed by acylation. The sequences (Schemes 3 and 4) are very simple and straightforward, they could in principle be applied to the synthesis of ‘push‐pull’ pentaAcetylenes 15 and hexaacetylenes 17 (Scheme 5). Main limitations are the moderate yields as well as the low thermal stability of push‐pull oligoacetylenes.

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