Versuche zur Synthese von ‘Push-Pull’-Diacetylenen |
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Authors: | Urs Stmpfli Markus Neuenschwander |
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Institution: | Urs Stämpfli,Markus Neuenschwander |
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Abstract: | 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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