Synthesis of 3,4-disubstituted 2(1H)-quinolinones via intramolecular Friedel–Crafts reaction of N-arylamides of Baylis–Hillman adducts
作者:Ko Hoon Kim、Hyun Seung Lee、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2009.01.018
日期:2009.3
3,4-Disubstituted 2(1H)-quinolinones were synthesized starting from the Baylis–Hillman adducts via the following sequential processes: (i) hydrolysis of the Baylis–Hillman adduct to acid, (ii) EDC coupling with anilines, (iii) H2SO4-assisted intramolecular Friedel–Crafts cyclization, and the final (iv) DBU-mediated isomerization.
3,4-二取代的2(1 H)-喹啉酮是通过以下顺序过程从Baylis-Hillman加合物开始合成的:(i)Baylis-Hillman加合物水解为酸,(ii)EDC与苯胺偶联,(iii )H 2 SO 4辅助分子内Friedel-Crafts环化,以及最终(iv)DBU介导的异构化。