An efficient route to diverse 2H-pyrano[3,2-c]quinolin-5(6H)-ones via electrophilic cyclization reactions
作者:Zhen Chen、Zhiyong Wang
DOI:10.1016/j.tet.2016.05.075
日期:2016.7
Electrophilic cyclization of 4-((3-arylprop-2-yn-1-yl)oxy)quinolin-2(1H)-one derivatives with iodine leads to the formation of 2H-pyrano[3,2-c]quinolin-5(6H)-ones bearing an alkenyl iodide moiety in good to excellent yields under mild conditions. The resulting iodo-containing 2H-pyrano[3,2-c]quinolin-5(6H)-ones could be further elaborated via palladium-catalyzed cross-coupling reactions.
4-((3-芳基-2--2--1-氧基)喹啉-2(1 H)-one衍生物与碘的亲电环化反应导致2 H-吡喃并[3,2- c ]喹啉的形成在温和的条件下,具有良好产率的-5(6 H)-烯基碘化物部分。所得的含碘的2 H-吡喃并[3,2 - c ]喹啉-5(6 H)-酮可通过钯催化的交叉偶联反应进一步加工。