PtCl<sub>2</sub>-Catalyzed Cyclization of <i>o</i>-Diethynylbenzene Derivatives Triggered by Intramolecular Nucleophilic Attack
作者:Koji Miki、Hiroyuki Kuge、Rui Umeda、Motohiro Sonoda、Yoshito Tobe
DOI:10.1080/00397911003797817
日期:2011.3.3
Abstract PtCl2-catalyzed cyclization of o-diethynylbenzene derivatives bearing a hydroxyethyl group yielded naphthofuran derivatives by initial intramolecular cyclization of the hydroxy group to an activated ethynyl group followed by attack of the second ethynyl group to a vinylplatinum intermediate. When the ethynyl terminal is substituted by a hydroxypropyl group, not only homologous naphthodihydropyran
摘要 PtCl2 催化带有羟乙基的邻二乙炔苯衍生物环化产生萘并呋喃衍生物,通过羟基的初始分子内环化为活化的乙炔基,然后第二个乙炔基攻击为乙烯基铂中间体。当乙炔基末端被羟丙基取代时,不仅形成同源的萘二氢吡喃,而且形成茚叉四氢呋喃衍生物。