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On the cyclization of ortho-alkynylbenzene diazonium salts

✍ Scribed by Lidiya G. Fedenok; Nataliya A. Zolnikova

Book ID
104253943
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
111 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis

Cyclization of ortho-(phenylethynyl)benzene diazonium salts containing groups of +C character at the para-position of the phenyl ring proceeds with closure to a pyrazole, but not to a pyridazine as is the case in the presence of neutral or -C groups.

πŸ“œ SIMILAR VOLUMES

The effect of substrate structure on the
The effect of substrate structure on the direction of cyclization of ortho-alkynylbenzene diazonium salts
✍ Lidiya G. Fedenok; Mark S. Shvartsberg; Valentina S. Bashurova; George A. Bogdan πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 French βš– 258 KB

The cyclization of ortho-(arylethynyl)benzene diazonium salts (the Richter reaction) is studied. A reaction mechanism, which differs radically from that reported earlier is proposed and substantiated by experimental data and quantum-chemical calculations.

Improved Method for the Cyclization of o
Improved Method for the Cyclization of ortho-Alkynylbenzenediazonium Salts.
✍ Nataliya A. Zolnikova; Lidiya G. Fedenok; Nikolay E. Polyakov πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons βš– 17 KB

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