作者:Qingyun Ren、Wenyan Mo、Yongyan Yao、Hongwu He、Yucheng Gu
DOI:10.1080/00397910902978015
日期:2009.12.30
convenient synthesis of unsymmetric multisubstituted pyridines from β-ketoesters and ketene N,S-acetals or ketene N,N-acetals has been achieved in good yields catalyzed by Zn(NO3)2·6H2O in the presence of triethylbenzylammonium (TEBA) chloride in ethanol. This reaction was carried out under economical, one-pot reaction conditions (using easily obtained starting materials, and inexpensive catalyst and
在三乙基苄基铵 (TEBA) 存在下,由 Zn(NO3)2·6H2O 催化,由 β-酮酯和乙烯酮 N,S-缩醛或乙烯酮 N,N-缩醛轻松方便地合成不对称多取代吡啶乙醇中的氯化物。该反应是在经济的一锅反应条件下进行的(使用容易获得的起始材料和廉价的催化剂和溶剂),与传统方法相比有相当大的改进。