91008-94-5Relevant academic research and scientific papers
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.
Metalation of Alkynes. Part 2. Behaviour of Alkynes with Mercury(II)Acetate in Methanol: a Systematic Reinvestigation
Bassetti, Mauro,Floris, Barbara
, p. 227 - 234 (2007/10/02)
The reaction of a series of alkynes with mercury(II)acetate, both in equimolar and catalytic amounts, were investigated in methanol.Hex-1-yne, oct-1-yne, oct-4-yne, 1,4-diacetoxybut-2-yne, methyl oct-2-ynoate, methyl 3-phenylpropynoate, oct-2-ynoic acid, phenylpropynoic acid, oct-1-yn-3-ol, 1-ethynylcyclohexanol, 1-ethynylcyclohexamine, phenylethyne, diphenylethyne, and ethynylferrocene were the examined substrates.The non-mercuriated products from the reaction were the corresponding vinyl ether, dialkoxyalkane, and ketone, isolated under preparative conditions.The presence of 0.1percent toluene-p-sulphonic acid increased the reactivity.The reactions of oct-1-yne and oct-4-yne were studied in detail by following with time the formation of the products under a variety of conditions, and a mechanistic scheme was drawn.For comparison, styrene, trans-oct-4-ene, and trans-β-methylstyrene were treated with 5 molpercent mercury(II) acetate.The reaction of alkenes was found to be non-catalytic.
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.
