pseudoazulenes containing two fused five-membered rings

✍ Scribed by G.V. Boyd

• Book ID: 104223221
• Publisher: Elsevier Science
• Year: 1965
• Tongue: French
• Weight: 196 KB
• Volume: 6
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)90081-9

✦ Synopsis

REPLACEMENT of a C=C unit in the seven-membered ring of azulene by an atom X, which can supply two n-electrons to the aromatic decet, gives rise to the pseudoasulenes(1) I and II.

Representatives of all these heterocyclic systems, in which X = 0, N, or S, are now known (2 -7) and