New fused heterocycles by combined intra-intermolecular criss-cross cycloaddition of nonsymmetrical azines
✍ Scribed by Stanislav Man; Petr Kulhánek; Milan Potáček; Marek Nečas
- Book ID
- 104251733
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 81 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Thermally induced intra-intermolecular criss-cross cycloaddition of nonsymmetrical azines in the presence of phenyl isocyanate is described. This one-pot reaction gives heterocyclic compounds containing three fused five-membered rings. The molecular and crystal structure of the products is reported and discussed.
📜 SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract The thermally initiated intramolecular criss‐cross cycloaddition of 3‐substituted homoallenylaldazines **5** has been explored. Their cyclization led to interesting new fused heterocyclic systems **6** consisting of four five‐membered rings with two nitrogen heteroatoms. The azines were