91008-94-5Relevant articles and documents
Revisiting the Influence of Silver in Cationic Gold Catalysis: A Practical Guide
Lu, Zhichao,Han, Junbin,Hammond, Gerald B.,Xu, Bo
supporting information, p. 4534 - 4537 (2015/09/28)
An excess amount of silver salt to generate cationic gold from a gold catalyst precursor such as L-Au-Cl almost always has adverse effects on the reactivity of the cationic gold catalyst. A preformed L-Au+X- complex, generated by sonication followed by centrifugation, increases the reactivity in a gold catalyzed reaction. The adverse silver effect might be caused by the interaction of silver salts with gold intermediates.
THE BEHAVIOUR OF DISUBSTITUTED ALKYNES WITH VARIOUS METAL ION ACETATES
Bassetti, Mauro,Floris, Barbara
, p. 595 - 598 (2007/10/02)
4-Octyne and diphenylethyne have been treated with some metal ion acetates in methanol and in acetic acid.From this systematic investigation, it appeares that the metal ions play a major role in directing the course of the reaction.The function of the metal is not predictable, since no general trend has been observed.Mercuric acetate was by and large the best reagent for the reaction with alkynes, quantitatively transforming these substrates into vinyl ethers, ketones, and dimethylketals.The reaction was faster in methanol than in acetic acid, and 4-octyne resulted more reactive than diphenylethyne.
