Blue-luminescent 5-(3-indolyl)oxazoles via microwave-assisted three-component coupling–cycloisomerization–Fischer indole synthesis
作者:Oliver Grotkopp、Atia Ahmad、Walter Frank、Thomas J. J. Müller
DOI:10.1039/c1ob06153d
日期:——
Aryl-substituted 5-(3-indolyl)oxazoles are readily synthesized in a novel one-pot three-component synthesis consisting of a microwave assisted sequence of Sonogashira coupling, an acid-catalyzed cycloisomerization, and a concluding Fischer indole synthesis. All title compounds are intensely blue-luminescent with large Stokes shifts upon UV-irradiation. The experimental absorption spectra are rationalized
芳基取代的5-(3-吲哚基)恶唑很容易以新颖的一锅三组分合成法合成,该合成法由Sonogashira偶联的微波辅助序列,酸催化的环异构化和最终的Fischer组成。 吲哚合成。所有标题化合物均发出强烈的蓝光,并在紫外线照射下发生较大的斯托克斯位移。实验吸收光谱通过基于DFT几何优化的ZINDO-CI计算得到合理化。