Cerium(IV) Ammonium Nitrate Is an Excellent, General Catalyst for the Friedländer and Friedländer−Borsche Quinoline Syntheses: Very Efficient Access to the Antitumor Alkaloid Luotonin A
作者:Vellaisamy Sridharan、Pascual Ribelles、M Teresa Ramos、J. Carlos Menéndez
DOI:10.1021/jo900965f
日期:2009.8.7
The use of cerium(IV) ammonium nitrate as a catalyst of the Friedländer reaction allows the synthesis of polysubstituted quinoline derivatives in excellent yields, avoiding the traditional harshly basic or acidic conditions. Unlike most other previously known reagents, CAN allows double condensations and is also an excellent catalyst for the Borsche variation of the Friedländer reaction, which has
使用硝酸铈(IV)铵作为Friedländer反应的催化剂,可以以优异的收率合成多取代的喹啉衍生物,从而避免了传统的苛刻的碱性或酸性条件。与大多数其他先前已知的试剂不同,CAN允许双重缩合,并且还是Friedländer反应的Borsche变体的极佳催化剂,该反应已被用于非常有效地合成抗肿瘤生物碱褪黑素A。