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Mesomeric betaines of azolium azolate: Synthesis and properties

✍ Scribed by Ermitas Alcalde; Immaculada Dinarés; Jordi Frigola

Book ID
104216400
Publisher
Elsevier Science
Year
1988
Tongue
French
Weight
148 KB
Volume
29
Category
Article
ISSN
0040-4039

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✦ Synopsis

  1. 20, 1245. C61. In the alkylatlon of benrlnldazoles by alkylhalldes under neutral condltlons, the yields are restrlcted to around 501.' II]. P.N.

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Synthesis of highly symmetric mesomeric
Synthesis of highly symmetric mesomeric triazaphenalene betaines
✍ Stanislav Kafka; Barbara Larissegger-Schnell; Thomas Kappe 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 150 KB

## Abstract The synthesis of seven mesomeric triazaphenalene betaines **4a‐g** by condensation reaction of hexahydro‐2__H__‐pyrimido[1,2‐__a__]pyrimidine **1** with diethyl malonates **2a‐g** or with bis(2,4,6‐trichlorophenyl)malonates **3c,f** has been achieved. The guanidine **1** forms in benzen