The intramolecular [4+2]π cycloadditions of (3-alkenyl)cyclopentadienes
✍ Scribed by Roger L. Snowden
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- French
- Weight
- 392 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
Intramolecular [3+2] -photocyctoadditions of alkenyl methyl 1,4-naphthalenedicarboxylates, which contain rather remote alkene moieties corresponding to isobutene or a-methylstyrene, proceeded largely depending on the chain lengths to give [3+2]-adducts having nine-to eleven-membered ring systems as
## Abstract Relative rates of [4 + 2] cycloadditions of cyclopentadienes 1a–1e with 4‐phenyl‐1,2,4‐triazoline‐3,5‐dione (2) in 12 different solvents vary by factors of up to 19000, but the reactions show similar solvent effects. Rate constants __k__~2~ correlate well with solvent parameters __AN__