Claisen reaction

2,6-Diacteylpyridine was synthesized via esterification and the Claisen condensation using 2,6-pyridinedicarboxylic acid as the starting material,with the metallic sodium being used as the base reagent for the first time.

以2,6-吡啶二甲酸为原料,经酯化后以金属钠作为新型碱性试剂,通过克莱森缩合制备出标题化合物,两步反应收率分别高达93。

Ethyl-dibenzoylmethane,which is one of the good light absorbents,was synthesized by using benzoyl acetate and ethyl phenyl ketone as their original raw materials,dibenzoylmethane was obtained through Claisen condensation,and then ethyl-dibenzoylmethane was got by alkylation.

该法以苯甲酸乙酯和苯乙酮为起始原料,经克莱森缩合生成二苯甲酰甲烷,再与溴乙烷进行烷基化反应,最后生成乙基二苯甲酰甲烷,并对合成产物进行结构分析及紫外光吸收性能表征。