alcohols, benzaldehydes, and DMSO to quinolines has been disclosed. For the reported annulation between 2-aminobenzyl alcohols and benzaldehydes, the change of the solvent from toluene to DMSO led to the change of the product from the diheteroatomic cyclic benzoxazines to monoheteroatomic cyclic quinolines. This annulation can be used to synthesize regioselectively different substituted quinolines
Synthesis of multi-functionalized quinolines and 1,2-dihydroquinolines through FeCl<sub>3</sub>
-mediated reactions of carbonyl compounds with 2-vinylanilines
作者:Sha Liu、Gaoqiang Li、Feng Xu
DOI:10.1002/jccs.201800001
日期:2018.7
A facile and efficient approach toward the synthesis of functionalized quinolines and 1,2‐dihydroquinolines from carbonylcompounds and 2‐vinylanilines is described. The protocol utilizes the nonhazardous and less expensive FeCl3 as catalyst with wide functional group tolerance and avoiding heavy metal impurities in the products.