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

Abstract

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 %. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.