セレンおよびテルル原子を含む複素環合成研究について（２）含セレン，テルル複素環の骨格変換および反応性

• 指田, 春喜

書誌事項

タイトル別名

• On the Synthetic Study of Selenium- and Tellurium-Containing Heterocycles (2) Reactions Involving Transformation of Selenium- and Tellurium-Containing Heterocycles

抄録

The preparations, reactions and functionalities of two types of the pyrylium salts (1- and 2-seleno- or telluro-pyrylium salts) are described. The 1-benzoselenopyrylium and 1-benzotelluropyrylium salts were prepared from the corresponding chromen-4-ones by the reduction and treatment with triphenylcarbenium tetrafluoroborate in two steps. The 2-benzoselenopyrylium and 1-benzotelluropyrylium salts were obtained from the isochromenes. The sensitive stability to the nature of the substituents at the C-2 or C-3 positions on the pyrylium salts and the reactions with several nucleophiles including alkoxides, amines, cyanide ion, an active methyl compound (acetone) and Grignard reagents, and also hydrogenation and hydrolysis are described. The precursors, benzochromones and isochromenes have been obtained by the intramolecular cyclization of tellurols, selenols and related compounds to a triple bond as the synthetic strategy in the previous review.

収録刊行物

• 北陸大学紀要

  北陸大学紀要 (37), 2014-03-31

  北陸大学

詳細情報

• CRID: 1050001202948513664
• NII論文ID: 120005450541
• ISSN: 21863989
• Web Site: https://hokuriku.repo.nii.ac.jp/records/69
• 本文言語コード: ja
• 資料種別: departmental bulletin paper
• データソース種別:
  • IRDB
  • CiNii Articles