Synthesis of mesomeric betaine compounds with imidazolium-enolate structure

• Nina Gonsior,
• Fabian Mohr and
• Helmut Ritter

Beilstein J. Org. Chem. 2012, 8, 390–397, doi:10.3762/bjoc.8.42

• 10.3762/bjoc.8.42 Abstract The synthesis of a heterocyclic mesomeric betaine by quaternization reaction of 1-butylimidazole and tetrabromo-1,4-benzoquinone is presented. The structure was verified by means of X-ray single-crystal analysis, NMR and IR spectroscopy. Inclusion complexes of the heterocyclic

• : cyclodextrin; heterocyclic mesomeric betaine; imidazole; polymer; X-ray single-crystal analysis; Introduction Heterocyclic mesomeric betaines [1] are interesting starting materials for heterocycle and polymer synthesis due to there intriguing chemical properties. They can be broadly classified into four main

• °C. Furthermore, considering the temperatures corresponding to 50% weight loss, the thermal stability decreases in the order of 6c (352 °C) > 6b (343 °C) > 7b (340 °C) > 6a (334 °C) > 7a (320 °C). Conclusion The synthesis of novel heterocyclic mesomeric betaine 3 by quaternization reaction of 1-butyl