Unexpected reactions of 1,4-diaza-1,3-dienes under acylating conditions. A new cyclization to non-acylated imidazole derivatives |
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| Affiliation: | 1. Departamento de Quimica Organica, Facultad de Ciencias Quimicas, Universidad Complutense, 28040-Madrid, Spain.;2. Department of Chemistry, The University, Dundee, DD1 4HN, Scotland. |
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| Abstract: | The reaction of anions from 1,2-bisimines with acid chlorides gives unacylated 2H-imidazoles. The unprecedented reactivity of these anions is interpreted by cyclization of the radical generated by electron transfer from the anion to the acid chloride. |
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