N-Heterocycle-Fused Pentalenes by a Gold-Catalyzed Annulation of Diethynyl-Quinoxalines and -Phenazines
作者:Kohei Sekine、Fabian Stuck、Jürgen Schulmeister、Thomas Wurm、Dominik Zetschok、Frank Rominger、Matthias Rudolph、A. Stephen K. Hashmi
DOI:10.1002/chem.201803096
日期:2018.8.27
ed pentalenes and the study of their optoelectronic properties are described. The inhibition of the gold catalyst by the nitrogen centers in the substrate and the product could be overcome by increasing the reaction temperature to 130 °C, which usually leads to catalyst decomposition in gold catalysis. At 130 °C, 6,7‐di(arylethynyl)quinoxalines in chlorobenzene give the corresponding pentalenes. The
描述了金催化的二乙炔N-杂环环化合成喹喔啉/吩嗪基戊二烯及其光电性能的研究。通过将反应温度提高到130°C,可以克服底物中氮中心对金催化剂的抑制作用,这通常会导致金催化反应中的催化剂分解。在130°C下,氯苯中的6,7-二(芳基乙炔基)喹喔啉可生成相应的戊烯。2,3-二(芳基乙炔基)喹喔啉的环化需要在微波辐射下更高的温度。与相应的萘基戊二烯相比,基于喹喔啉的戊二烯的LUMO含量较低。