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[2++4] Cycloadditions of Iminium Ions − Concerted or Stepwise Mechanism of Aza Diels−Alder Reactions?

✍ Scribed by Herbert Mayr; Armin R. Ofial; Jürgen Sauer; Bernhard Schmied


Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
318 KB
Volume
2000
Category
Article
ISSN
1434-193X

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Reactions of gaseous acylium ions with 1
✍ Aline B. Lemos; Regina Sparrapan; Marcos N. Eberlin 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 168 KB

## Abstract A novel reaction of acylium and thioacylium ions, polar [4 + 2^+^] Diels–Alder cycloaddition with 1,3‐dienes and __O__‐heterodienes, has been systematically investigated in the gas phase (Eberlin MN, Cooks RG. __J. Am. Chem. Soc.__ 1993; 115: 9226). This polar cycloaddition, yet without