ChemInform Abstract: [2 + 2] Cycloaddition and Ring Expansion Reactions of Cyclic Phosphonium and Aminophosphonium Salts: Synthesis and Structure of the First Eight-Membered Ylide-Type Heterocycles.

✍ Scribed by Tetsuya Uchiyama; Tetsuya Fujimoto; Akikazu Kakehi; Iwao Yamamoto

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 32 KB
• Volume: 30
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199938168

✦ Synopsis

38 -168

[2 + 2] Cycloaddition and Ring Expansion Reactions of Cyclic Phosphonium and Aminophosphonium Salts: Synthesis and Structure of the First Eight-Membered Ylide-Type Heterocycles.

-In the case of reactions between (IV) and nitrile (II) or diester (VI), the desired title compounds can be isolated. In an analogous reaction of five-membered substrate (VIII), isolation of the corresponding seven-membered products (X) is not possible. -(UCHIYAMA, TETSUYA; FUJIMOTO, TETSUYA;