Studies on xanthylium salts. Behaviour of 9-vinylidenexanthenes in acid media.

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概要

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• Unsymmetrical allenes namely, 1,1-diaryl-2-(9′-xanthenylidene)ethylenes (<B>1</B>) reacted readily with perchloric acid, hydrogen chloride, and acetic acid to give the corresponding highly coloured 9-vinylxanthylium salts (<B>3</B>). The latter derivatives (<B>3</B>) thermally rearranged in acid media to give spiro[indene-1,9′-xanthene]s (<B>7</B>). Structures of compounds <B>3</B> and <B>7</B> were established from chemical and spectral evidences. A new route for synthesis of allenes (<B>1</B>) was reported.

• 公益社団法人 日本化学会の論文

著者

• Abdul-Malik Nadia

  Department of Chemistry, Faculty of Science, University of Cairo

• Awad Sami

  Department of Chemistry, Faculty of Science, University of Cairo

• Sakla Alfy

  Department of Chemistry, Faculty of Science, University of Cairo

関連論文

• Studies on Xanthenyl and Thioxanthenyl Derivatives. Reactions of Xanthenyl and Thioxanthenyl Halides with Substituted-Ethylenes
• Studies on xanthylium salts. Behaviour of 9-vinylidenexanthenes in acid media.

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