Regiospecific Three-Component Access to Fluorescent 2,4-Disubstituted Quinolines via One-Pot Coupling-Addition-Cyclocondensation-Sulfur Extrusion Sequence
作者:Sven Rotzoll、Benjamin Willy、Jan Schönhaber、Frank Rominger、Thomas J. J. Müller
DOI:10.1002/ejoc.201000212
日期:——
4-Di- and 2,4,7-trisubstituted quinolines are readily synthesized in a regioselective fashion from acyl chlorides, terminal alkynes, and 2-aminothiophenols by a consecutive, microwave-assisted one-pot three-component Sonogashira coupling-Michael addition-cyclocondensation sequence and following sulfur extrusion in moderate to good yields. The terminal sulfur extrusion step was studied by DFT computations
2,4-二-和2,4,7-三取代的喹啉很容易以区域选择性的方式从酰氯、末端炔烃和2-氨基苯硫酚通过连续的微波辅助一锅三组分Sonogashira偶联-迈克尔合成加成环缩合顺序和随后的硫挤出以中等至良好的产率。通过 DFT 计算研究了末端硫挤出步骤。2,4-二取代喹啉的吸收光谱可以通过 DFT-ZINDO-CI 计算得到合理化,所有衍生物在 UV 激发时都显示出强烈的蓝色发射。