A highly efficient gold-catalyzed cycloisomerization reaction of bis-homopropargylic diols is described. The cyclizations are conducted in the presence of either AuI or AuIII catalysts in MeOH at roomtemperature in a very short time. The reaction conditions are compatible with functional groups, such as n-butyl, phenyl, allyl, benzyl, and alcohol groups, leading to original strained dioxabicyclo[2
Silver-catalyzed intramolecular oxycyclization of alkynes to bridged bicyclic ketals
作者:Chang Ho Oh、Hyun Jik Yi、Ji Ho Lee
DOI:10.1039/b702704d
日期:——
We have discovered a new and highly convenient Ag-catalyzed intramolecular oxycyclization of alkynes, leading to bridged bicyclic ketals as four carbon synthetic building blocks.
我们发现了一种新的、非常方便的 Ag 催化炔烃分子内氧基环化方法,从而获得桥接双环酮作为四碳合成构件。