the position of C-C bond formation on the acetylene moiety. In most of the cases, the reaction requires less than 1-mol % loading of the catalyst and does not require solvent. The reaction tolerates a wide variety of functional groups including ester, ether, allylic halide, furan, thiophene, and protected amine. Experimental and theoretical studies suggested that the reaction proceeds via a concerted
Indium-Catalyzed Addition of Active Methylene Compounds to 1-Alkynes
作者:Masaharu Nakamura、Kohei Endo、Eiichi Nakamura
DOI:10.1021/ja038006m
日期:2003.10.1
An activemethylenecompound adds to a 1-alkyne in high to quantitative yield upon heating in the presence of 0.05-5 mol % of In(OTf)3 to give an alpha-alkenylated carbonyl compound.
A ruthenium-catalyzed coupling of alkynes with 1,3-diketones
作者:Megan K. Pennington-Boggio、Brian L. Conley、Travis J. Williams
DOI:10.1016/j.jorganchem.2012.05.017
日期:2012.10
Ruthenium(III) chloride hydrate is a convenient catalyst for the addition of active methylene compounds to aryl alkynes. These reactions are rapid, operationally simple, and high yielding in cases. Most significantly, no precautions are required to exclude air or water from the reactions. All reagents are commercially available at reasonable prices, and the reactions can be conducted in disposable glassware with minimal solvent. (C) 2012 Elsevier B.V. All rights reserved.
Ruthenium-Catalyzed Addition of 1,3-Diketones to Terminal Alkynes
Ruthenium complex [RuCl2(CO)(3)](2) catalyzes the addition of 1,3-diketones to terminal alkynes. We observed C-addition with acyclic 1,3-diketones, whereas the use of cyclic 1,3-diketones systematically led to O-addition reactions.
Synthesis of Ethyl 2-Ethanoyl-2-Methyl-3-Phenylbut-3-Enoate