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The synthesis of pentadienylium salts via reactions of (5-ethoxy-1,5-diaryl-2,4-pentadienylidene)ethyloxonium perchlorate with hydrazines

✍ Scribed by François Rivière; Vadim D. Romanenko; Marie-Rose Maziéres; Michel Sanchez; Jean-Gérard Wolf

Book ID
104255789
Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
203 KB
Volume
37
Category
Article
ISSN
0040-4039

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✦ Synopsis

Reaction of the readily available (5-ethoxy-l,5-diaryl-2,4-pentadienylidene)ethyloxonium perchlorate 1 with hydrazines, R2NNH 2 or RNHNH2,provides a simple and efficient synthesis of previously unknown (5-ethoxy-1,5-diaryl-2,4-pentadienylidene)hydrazinium salts 2a-d. Application of this method to the synthesis of the highly conjugated pentadienylium salt from terephthalic dihydrazide is reported.

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