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ChemInform Abstract: Synthesis of Cross-Conjugated Heterocyclic Mesomeric Betaines.

✍ Scribed by K. Saidi; H. Sheibani


Publisher
John Wiley and Sons
Year
2010
Weight
26 KB
Volume
32
Category
Article
ISSN
0931-7597

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## 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