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Cycloheptatriene-norcaradiene-equilibrium cycloaddition reactions of the 1.2-benzocycloheptatriene with singlet oxygen and 4-phenyl-1.2.4-triazolin-3.5-dione

✍ Scribed by Metin Balci; Basri Atasoy

Publisher: Elsevier Science
Year: 1984
Tongue: French
Weight: 216 KB
Volume: 25
Category: Article
ISSN: 0040-4039
DOI: 10.1016/0040-4039(84)80059-3

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## 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__