Synthesis of symmetrical and unsymmetrical triarylpyrylium ions <i>via</i> an inverse electron demand Diels–Alder reaction
作者:C. T. Fathimath Salfeena、Basavaraja Basavaraja、K. T. Ashitha、V. Praveen Kumar、Sunil Varughese、Cherumuttathu H. Suresh、B. S. Sasidhar
DOI:10.1039/c8cc06444j
日期:——
mediated inverse electron demand Diels–Alder (IEDDA) reaction of chalcones with aryl acetylenes is reported for the synthesis of symmetrical and unsymmetrical 2,4,6-triarylpyrylium ions. The protocol provides an effective one-pot method for the utilization of readily available simple substrates under mild reaction conditions leading to a diverse array of pyrylium ions in moderately good yield.
据报道,BF 3 ·OEt 2介导的查耳酮与芳基乙炔的逆电子需求Diels-Alder(IEDDA)反应可合成对称和不对称的2,4,6-三芳基aryl离子。该协议为在温和的反应条件下利用容易获得的简单底物提供了一种有效的一锅法,从而以适度的好收率产生了一系列的吡啶离子。