A heterogeneous gold(I)-catalyzed regioselective hydration of propargyl acetates toward α-acyloxy methyl ketones
作者:Yingying Du、Fang Yao、Rongli Zhang、Mingzhong Cai
DOI:10.1016/j.jorganchem.2020.121136
日期:2020.3
heterogeneous gold(I)-catalyzed regioselective hydration of propargylacetates has been developed that proceeds smoothly in 1,4-dioxane at room temperature in the presence of 1 mol% diphenylphosphine-modified MCM-41-anchored gold(I) complex [Ph2P-MCM-41-AuSbF6] as catalyst and provides an efficient and practical approach for the synthesis of a variety of α-acyloxy methyl ketones with high atom economy
Silver(I)-Catalyzed Reaction between Pyrazole and Propargyl Acetates: Stereoselective Synthesis of the Scorpionate Ligands (<i>E</i>)-Allyl-<i>gem</i>-dipyrazoles (ADPs)
作者:M. Bhanuchandra、Malleswara Rao Kuram、Akhila K. Sahoo
DOI:10.1021/jo401867e
日期:2013.12.6
The reaction between readily accessible pyrazole and propargyl acetates in the presence of Ag(I) catalyst yielded a new class of (E)-allyl-gem-dipyrazole scorpionate ligands: 1-aryl-2-N-pyrazolyl allyl acetates and 1,3-dipyrazolyl-3-arylpropene. The reaction showed broad substrate scope, and various functional and protecting groups were tolerated under the reaction conditions. The palladium(II) scorpionate complex could thus be easily prepared and successfully employed in Suzuki-Miyaura cross-couplings in water.