T. Nishimura, Y. Washitake, S. Uemura
Dec 10, 2007
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0
Influential Citations
54
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Journal
Advanced Synthesis & Catalysis
Abstract
A ruthenium complex [triruthenium dodecacarbonyl, Ru3(CO)12] in the presence of bis(triphenylphosphine)iminium chloride ([PPN]Cl) catalyzes the conjugate addition of terminal alkynes to alkyl acrylates to give high yields of γ,δ-alkynyl esters. On the other hand, the linear codimerization reaction of terminal alkynes with alkyl acrylates proceeds in the presence of a catalytic amount of Ru3(CO)12 and lithium iodide to give the corresponding conjugate dienes. These two different types of catalytic carbon-carbon bond forming reactions are controlled only by the nature of halide ions, either a chloride or an iodide, with other conditions being kept almost the same.