✦ LIBER ✦

Synthesis and reactions of 1,1-trimethylene-1H-azulenium ion

✍ Scribed by Mitsunori Oda; Aya Sakamoto; Ryuta Miyatake; Shigeyasu Kuroda

Book ID: 104259680
Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 227 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)01273-8

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✦ Synopsis

Direct cyclobutylation of 1,6-dihydroazulene gave the spiro hydrocarbon 6, which was subjected to hydride abstraction to lead to the title cation 4. Its hexafluorophosphate salt was isolated as crystals. The cation 4 showed distinctive chemical behavior compared with its thrce-membcrcd ring homolog.

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