2004 Polyphenylalkyne derivatives

Polyphenylalkyne derivativesQ 0750 A Copper- and Amine-Free Sonogashira Coupling Reaction Promoted by a Fer-

rocene-Based Phosphinimine-Phosphine Ligand at Low Catalyst Loading. — In the presence of very low loadings of the title catalyst (I), copper- and amine-free So-nogashira coupling reactions of aryl halides with terminal alkynes are achieved. Trim-ethylsilylacetylene (XI) suffers desilylation resulting in formation of symmetrical dia-rylacetylenes. — (ARQUES*, A.; AUNON, D.; MOLINA, P.; Tetrahedron Lett. 45 (2004) 22, 4337-4340; Dep. Quim. Org., Fac. Quim., Univ. Murcia, E-30071 Murcia, Spain; Eng.) — Mais

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