Friedländer reaction/quinoxalinone–benzimidazole rearrangement sequence: expeditious entry to diverse quinoline derivatives with the benzimidazole moieties
作者:Vakhid A. Mamedov、Saniya F. Kadyrova、Nataliya A. Zhukova、Venera R. Galimullina、Fedor M. Polyancev、Shamil K. Latypov
DOI:10.1016/j.tet.2014.06.007
日期:2014.9
3-(2-aminophenyl)quinoxalin-2(1H)-ones and ketones, including acetone, acetophenones, 1,3-pentanedione and ethyl acetoacetate. The selective formation of the very different quinoline derivatives depends on the structure of ketones. The key steps are proposed to involve the new acid-catalyzed rearrangement of the spiro-quinoxalinone derivatives formed in situ from the reaction of 3-(2-aminophenyl)quinoxalin-2(1H)-ones