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Versuche zur Synthese von ‘Push-Pull’-Diacetylenen

✍ Scribed by Urs Stämpfli; Markus Neuenschwander

Publisher
John Wiley and Sons
Year
1983
Tongue
German
Weight
495 KB
Volume
66
Category
Article
ISSN
0018-019X

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✦ Synopsis

Attempted Synthesis of Push‐Pull Diacetylenes

Two alternative synthesis of push‐pull diacetylenes of type 1 (5‐amino‐2,4‐alkadiynals) are investigated. A bromination‐dehydrobromination sequence starting with 5‐dimethylamino‐2,4‐pentadienal (2) as well as the application of the well‐known Cadiot‐Chodkiewicz coupling reaction give new intermediates 3–5, and 7 and 8, respectively, but fail to give the target molecules 1.

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