Gold Catalysis: Mild Conditions for the Transformation of Alkynyl Epoxides to Furans
作者:A. Stephen K. Hashmi、Pradipta Sinha
DOI:10.1002/adsc.200303201
日期:2004.3
Gold(III) chloride catalyzes the isomerization of alkynylepoxides to furans under mildconditions. Additional functional groups like hydroxy groups or aryl bromides do not need to be protected.
The reaction of propargylic oxiranes with platinum catalyst in aqueous media is described. Furans having a variety of substituents were conveniently synthesized with high efficiency.