Helvetica Chimica Acta p. 1427 - 1435 (1983)
Update date:2022-08-11
Topics:
Staempfli, Urs
Neuenschwander, Markus
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 application of the well-known Cadiot-Chodkiewicz coupling reaction give intermediates 3-5, and 7 and 8, respectively, but fail to give the target molecules 1.
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