Mesomeric betaine: Difference between revisions
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'''Mesomeric [[betaine]]s''' are [[dipolar]] [[heterocyclic compounds]] in which both the negative and the positive [[charge (physics)|charge]]s are [[delocalized]].<ref name="tetrahedron">{{cite journal |doi=10.1016/S0040-4020(01)96625-6 |title=Heterocyclic mesomeric betaines |year=1985 |last1=Ollis |first1=W.David |last2=Stanforth |first2=Stepher P. |last3=Ramsden |first3=Christopher A. |journal=Tetrahedron |volume=41 |issue=12 |pages=2239–2329}}</ref> |
'''Mesomeric [[betaine]]s''' are [[dipolar]] [[heterocyclic compounds]] in which both the negative and the positive [[charge (physics)|charge]]s are [[delocalized]].<ref name="tetrahedron">{{cite journal |doi=10.1016/S0040-4020(01)96625-6 |title=Heterocyclic mesomeric betaines |year=1985 |last1=Ollis |first1=W.David |last2=Stanforth |first2=Stepher P. |last3=Ramsden |first3=Christopher A. |journal=Tetrahedron |volume=41 |issue=12 |pages=2239–2329}}</ref> |
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Examples are [[mesoionic]] compounds and [[heteropentalene]]s (e.g. [[diazapentalene]]s). Heteropentalenes are not [[mesoionic]].<ref name="bioactive">{{cite book |last=Kawase |first=Masami |
Examples are [[mesoionic]] compounds and [[heteropentalene]]s (e.g. [[diazapentalene]]s). Heteropentalenes are not [[mesoionic]].<ref name="bioactive">{{cite book |last=Kawase |first=Masami |doi=10.1007/7081_2007_096 |publisher=Springer |year=2009 |page=135–152 |title=Bioactive Heterocycles VII |volume=16 |series=Topics in Heterocyclic Chemistry |isbn=978-3-642-00335-6 |chapter=The Chemistry of Bioactive Mesoionic Heterocycles }}</ref> |
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== References == |
== References == |
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Revision as of 16:24, 16 November 2018
Mesomeric betaines are dipolar heterocyclic compounds in which both the negative and the positive charges are delocalized.[1]
Examples are mesoionic compounds and heteropentalenes (e.g. diazapentalenes). Heteropentalenes are not mesoionic.[2]
References
- ^ Ollis, W.David; Stanforth, Stepher P.; Ramsden, Christopher A. (1985). "Heterocyclic mesomeric betaines". Tetrahedron. 41 (12): 2239–2329. doi:10.1016/S0040-4020(01)96625-6.
- ^ Kawase, Masami (2009). "The Chemistry of Bioactive Mesoionic Heterocycles". Bioactive Heterocycles VII. Topics in Heterocyclic Chemistry. Vol. 16. Springer. p. 135–152. doi:10.1007/7081_2007_096. ISBN 978-3-642-00335-6.