N-alkylpyrimidinium cations carrying a dienophilic side-chain at the 2-or 5position undergo intramolecular inverse electron demand Diels-Alder reactions into the corresponding annelated pyridine derivatives under considerably milder conditions than the corresponding neutral pyrimidines. Protonation
Expected and unexpected intramolecular cationic cyclizations
✍ Scribed by Sándor Sólyom; Emese Csuzdi; Gizella Ábrahám
- Publisher
- Springer US
- Year
- 1995
- Tongue
- English
- Weight
- 359 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0009-3122
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