Synthesis of 1,4,5,6-tetrahydropyridazines and pyridazines via transition-metal-free (4 + 2) cycloaddition of alkoxyallenes with 1,2-diaza-1,3-dienes
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DOI: 10.1039/c9ra02712b
Abstract: We developed an economical and practical protocol for the synthesis of 1,4,5,6-tetrahydropyridazines and pyridazines via cyclization of alkoxyallenes and 1,2-diaza-1,3-dienes. read more here.
Keywords: alkoxyallenes diaza; tetrahydropyridazines pyridazines; diaza dienes; synthesis tetrahydropyridazines ... See more keywords
Silver-catalyzed decarboxylative cyclization for the synthesis of substituted pyrazoles from 1,2-diaza-1,3-dienes and α-keto acids.
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DOI: 10.1039/d2cc01793h
Abstract: A silver-catalyzed decarboxylative cyclization process has been developed for the synthesis of substituted pyrazoles from the readily available 1,2-diaza-1,3-dienes and α-keto acids. Under the optimized conditions, a series of multisubstituted pyrazoles were well prepared in… read more here.
Keywords: diaza dienes; synthesis substituted; decarboxylative cyclization; substituted pyrazoles ... See more keywords
Novel synthesis of 1,2-diaza-1,3-dienes with potential biological activity from cinnamic acids and diazonium salts of anilines
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DOI: 10.1039/d2ra07515f
Abstract: Cinnamic acids are an important class of phenolic compounds, which have many beneficial effects on human health but are also interesting synthetic intermediates thanks to the presence of several reactive sites. While studying the reactivity… read more here.
Keywords: diaza dienes; diazonium salts; cinnamic acids; biological activity ... See more keywords