Pyrazolium-sulfonates. Mesomeric betaines possessing iminium-sulfonate partial structures
نویسندگان
چکیده
منابع مشابه
Zwitterionic borane adducts of N-heterocyclic carbenes from mesomeric betaines of uracil.
We prepared a series of imidazolium-substituted uracil-anions which are members of the class of cross-conjugated heterocyclic mesomeric betaines. They are in tautomeric equilibrium with their N-heterocyclic carbenes, uracil-6-yl-imidazol-2-ylidenes. These carbenes can be trapped by reaction with sulfur, selenium, as well as by triethylborane and triphenylborane, respectively. The latter trappin...
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2011
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0013.303