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Synthesis of the benzo[b]fluorene core of the kinamycins by cycloaromatization of non-conjugated benzotriynes

✍ Scribed by David Rodríguez; Luis Castedo; Domingo Domínguez; Carlos Saá

Book ID: 104262350
Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 218 KB
Volume: 40
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)01570-1

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✦ Synopsis

Non-conjugated benzotriynes 2 undergo a novel radical cycloaromatization to provide the benzo[b]fluorene core of the kinamycins. The overall process involves a thermal intramolecular cyclization to the non-benzenoid biradicals 4 followed by radical cyclization and hydrogen abstraction.

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