In 2019,European Journal of Organic Chemistry included an article by Baron, Marco; Biffis, Andrea. Electric Literature of C5H6O2. The article was titled 《Gold(I) Complexes in Ionic Liquids: An Efficient Catalytic System for the C-H Functionalization of Arenes and Heteroarenes under Mild Conditions》. The information in the text is summarized as follows:
Use of ionic liquids bearing the proper counteranion as reaction solvents allows to boost the reactivity of gold(I) complexes as catalysts in the hydroarylation of alkynes with arenes and heteroarenes. Several com. complexes of general structure LAuX have been tested as catalysts, with L=1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene standing out as the one delivering the best performance. Beside high activity, enabling the use of <1 mol-% catalyst under mild conditions (low temperature, no need for an acid cocatalyst), gold-based catalytic systems in ionic liquids also exhibit tunable chemo- and regioselectivity in these reactions and turn out to be recyclable, which renders them quite attractive for synthetic applications. In the part of experimental materials, we found many familiar compounds, such as Ethyl propiolate(cas: 623-47-2Electric Literature of C5H6O2)
Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Electric Literature of C5H6O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics