Practical Synthesis of Unsymmetrical Diarylacetylenes from Propiolic Acid and Two Different Aryl Bromides

S Tartaggia, O De Lucchi…

Index: Tartaggia, Stefano; De Lucchi, Ottorino; Goossen, Lukas J. European Journal of Organic Chemistry, 2012 , # 7 p. 1431 - 1438

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Citation Number: 14

Abstract

Abstract A palladium catalyst that mediates the one-pot sequential Sonogashira and decarboxylative coupling of propiolic acid with two different aryl bromides has been developed. Selective coupling of the first aryl bromide was achieved in the presence of a copper-free, monometallic catalyst generated in situ from allylpalladium chloride dimer and SPhos with tetra-n-butylammonium fluoride as the base in an N-methyl-2-pyrrolidone/ ...

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