Synthesis and Fluorescence Properties of α,α′-Bis(substituted-benzylidene)cycloalkanones Catalyzed by 1-Methyl-3(2-(sulfooxy)ethyl)-1<i>H</i>-imidazol-3-ium Chloride
α,α′-Bis(substituted-benzylidene)cycloalkanones were synthesized via a solvent-free cross-aldol condensation of aromatic aldehydes with cycloalkanones in the presence of a catalytic amount 1-methyl-3(2-(sulfooxy)ethyl)-1H-imidazol-3-ium chloride at room temperature with excellent yields. The screening for optical properties indicated that the size of cycloalkanone has an influence on the fluorescence
2,4,5-Triaryl-5H-chromeno[4,3-b]pyridines were synthesized from a three-component cascade reaction of 2′-hydroxyacetophenone, aromatic aldehyde, and ammonium acetate catalyzed by 2-1′-methylimidazolium-3-yl-1-ethyl sulfate undermicrowave irradiation. Nine new bonds and two new rings were formed in one-pot. J. Heterocyclic Chem., (2009).
2,4,5-Triaryl-5 H -chromeno [4,3- b ]吡啶是由三组分级联反应合成的2'-羟基苯乙酮,芳香醛和微波辐射下2-1'-甲基咪唑-3-基-1-乙基硫酸酯催化的乙酸铵。一锅中形成了九个新债券和两个新环。J.杂环化学,(2009)。