Characterization of the Isochromen‐4‐yl‐gold(I) Intermediate in the Gold(I)‐Catalyzed Glycosidation of Glycosyl ortho‐Alkynylbenzoates and Enhancement of the Catalytic Efficiency Thereof

作者：Yugen Zhu, Biao Yu · 发表于：Angewandte Chemie International Edition · 年份：2011 · DOI：10.1002/anie.201103409 · 被引用次数：145 · 研究领域：Catalytic Alkyne Reactions、African history and culture studies、Catalysis and Hydrodesulfurization Studies

Gold standard: The title gold complex (see scheme) was characterized unambiguously as an important intermediate in the title reaction. Protonolysis of this vinyl gold(I) complex was critical for regeneration of the active gold(I) species for the catalytic cycle, and use of a protic acid co-catalyst significantly lowered the required catalyst loading to 0.5 mol %.