Iron(III) Chloride/Diorganyl Diselenides-Promoted Regioselective Cyclization of Alkynyl Aryl Ketones: Synthesis of 3-Organoselenyl Chromenones under Ambient Atmosphere
作者:Benhur Godoi、Adriane Sperança、Cesar A. Bruning、Davi F. Back、Paulo Henrique Menezes、Cristina W. Nogueira、Gilson Zeni
DOI:10.1002/adsc.201100189
日期:2011.8
benign synthesis of 3-organoselenylchromenones was accomplished via iron(III) chloride/diorganyl diselenides-promoted intramolecular 6-endo-dig cyclization of alkynyl aryl ketone derivatives. The cyclization reactions proceeded cleanly under mild reaction conditions, and the desired chromenone derivatives were smoothly isolated in good yields. The methodology proved to be highly regioselective, giving
通过氯化铁(III)/二有机基二硒化物促进的炔基芳基酮衍生物的分子内6-内切环化作用,完成了3-有机硒基色酮的高效,环境友好的合成。环化反应在温和的反应条件下进行得很干净,并以良好的收率顺利分离出所需的苯醌衍生物。该方法被证明是高度选择性,只给六元的区域异构体,并在室温和环境气氛,这可以被认为是一个经济和生态下进行了使用铁(III),氯化/二有机二硒化物-友好协议。