Tandem Knoevenagel-[3+2] cycloaddition-elimination reactions: one-pot synthesis of 4,5-disubstituted 1,2,3-(NH)-triazoles
作者:Thanasekaran Ponpandian、Shanmugam Muthusubramanian
DOI:10.1016/j.tetlet.2011.10.146
日期:2012.1
found to catalyse Knoevenagel condensation between aromatic aldehyde and cyano compound with active methylene hydrogens and this has led to a successful route for the one pot synthesis of 4,5-disubstituted 1,2,3-(NH)-triazoles from aldehydes through Knoevenagel-[3+2]cycloaddition-elimination sequence. In the formation of 5-aryl-2H-1,2,3-triazole-4-carbonitrile derivatives, the reaction has been found
已发现叠氮化钠催化芳香醛和氰基化合物与活性亚甲基氢之间的Knoevenagel缩合反应,这已导致一锅法合成一锅法合成4,5-二取代1,2,3-(NH)-三唑的成功途径。通过Knoevenagel- [3 + 2]环加成-消除序列形成醛。在形成5-芳基-2 H -1,2,3-三唑-4-腈的衍生物中,发现该反应在水中有效地发生。