Synthesis of Substituted Indenes through Iron-Catalyzed Annulation of Benzylic Alcohols with Alkynes
作者:Xiuli Bu、Jianquan Hong、Xigeng Zhou
DOI:10.1002/adsc.201100065
日期:2011.8
A convenient and efficient method for the synthesis of polysubstituted indenes has been developed by the iron(III) trichloride-catalyzed tandem mono- and dibenzylation/cyclization reactions of benzylicalcohols with alkynes. This method is featured with the easily available starting materials, cheap catalyst, simple manipulation and mild conditions.
The annulative coupling of secondary benzyl alcohols with internal alkynes efficiently proceeds in the presence of a silver catalyst. The reaction gives 1,2,3-substituted indene derivatives selecti...