502844-66-8Relevant academic research and scientific papers
PtCl2-catalyzed cyclization of o-diethynylbenzene derivatives triggered by intramolecular nucleophilic attack
Miki, Koji,Kuge, Hiroyuki,Umeda, Rui,Sonoda, Motohiro,Tobe, Yoshito
, p. 1077 - 1087 (2011/04/25)
(Chemical Equation Presented) 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 but also indenylidenete-trahydrofuran derivatives were formed. Copyright Taylor & Francis Group, LLC.
A route to 5-substituted dibenzofurans by anionic cycloaromatization of 2-(6-substituted 3-hexen-1,5-diynyl)phenyl tert-butyldimethyl ethers and related molecules
Wu, Ming-Jung,Lee, Chia-Ying,Lin, Chi-Fong
, p. 4077 - 4079 (2007/10/03)
An anionic cycloaromatization reaction provides an efficient method for the synthesis of the dibenzofurans 2 by treatment of the tert-butyldimethylsilyl ethers 1 with sodium methoxide or potassium carbonate in methanol at reflux for 16 h, and gives 50-94%
