**Synthesis of ‘Push‐Pull’ Diacetylenes** The first synthesis of push‐pull diacetylenes of type **1** is described. Reaction of perchlorobutenyne (**8**) with two equivalents of dialkylamine, followed by dechlorination using two equivalents of butyllithium gives lithio‐dialkylamino‐diynes **7**. Fi
Synthese neuer `Push-Pull'-Enine
✍ Scribed by Christian Bacilieri; Markus Neuenschwander
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- German
- Weight
- 109 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0018-019X
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📜 SIMILAR VOLUMES
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__)
Synthesis of ‘Push‐Pull’ Enynes ‘Push‐pull’ enynes 1a–1f are easily available by Pd catalyzed coupling of stannyl‐ynamines 15 and silylynamines 16 with β‐iodo‐enones 8 (__Schemes 7__ and __8__).
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**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‐know