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A Theoretical Study of the Reaction between Cyclopentadiene and Protonated Imine Derivatives: A Shift from a Concerted to a Stepwise Molecular Mechanism

✍ Scribed by Domingo, Luis R.; Oliva, Mónica; Andrés, Juan

Book ID
120837403
Publisher
American Chemical Society
Year
2001
Tongue
English
Weight
137 KB
Volume
66
Category
Article
ISSN
0022-3263

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✍ Hartnagel, Manfred ;Grimm, Klaus ;Mayr, Herbert 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 1002 KB

## Abstract Arenediazonium ions 1 undergo [2^+^ + 4] cycloadditions with (__E__)‐1,3‐pentadiene (2a), 2,3‐dimethylbutadiene (2b), and (__E__)‐2‐methyl‐1,3‐pentadiene (2c) to give dihydropyridazines or pyridazinium salts. While highly electrophilic diazonium ions and the unsymmetrical dienes 2a and