Synthesis of 1H-indol-2-yl-(4-aryl)-quinolin-2(1H)-ones via Pd-catalyzed regioselective cross-coupling reaction and cyclization
作者:Zhiyong Wang、Jie Wu
DOI:10.1016/j.tet.2007.12.003
日期:2008.2
An efficient and novel route for the synthesis of 1H-indol-2-yl-(4-aryl)-quinolin-2(1H)-one 1 via palladium-catalyzed site-selective cross-coupling reaction and cyclization process was described. Reaction of 3-bromo-4-trifloxy-quinolin-2(1H)-one 3 with arylboronic acid catalyzed by PdCl2(PPh3)2 afforded 3-bromo-4-aryl-quinolin-2(1H)-one 4, which then reacted with 2-ethynylaniline 5 via Pd-catalyzed
描述了一种通过钯催化的位点选择性交叉偶联反应和环化过程合成1 H-吲哚-2-基-(4-芳基)-喹啉-2(1 H)-one 1的有效新颖途径。。PdCl 2(PPh 3)2催化3-溴-4-三氟氧基喹啉-2(1 H)-one 3与芳基硼酸反应,得到3-溴-4-芳基喹啉-2(1 H)-one 4,然后通过Pd催化的Sonogashira偶联和CuI介导的环化反应与2-乙炔基苯胺5反应,生成所需的1 H-吲哚-2-基-(4-芳基)-喹啉-2(1 H)-高收益的1。