(Hexafluoroacetylacetonato)copper(i)–cycloalkyne complexes as protected cycloalkynes†
Abstract
A protection method for cycloalkynes by the formation of (hexafluoroacetylacetonato)copper(I)–cycloalkyne complexes is disclosed. Various complexes having functional groups were efficiently prepared, which are easily purified by silica-gel column chromatography. Selective click reactions were realized through the complexation of cycloalkynes with copper.