Tetrahedron

Copper (I)-catalysed homo-coupling of aryldiazonium salts: synthesis of symmetrical biaryls

I Cepanec, M Litvić, J Udiković, I Pogorelić, M Lovrić

Index: Cepanec, Ivica; Litvic, Mladen; Udikovic, Josipa; Pogorelic, Ivan; Lovric, Marija Tetrahedron, 2007 , vol. 63, # 25 p. 5614 - 5621

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Citation Number: 36

Abstract

Copper (I) triflate acts as an efficient stoichiometric reagent for the homo-coupling of aryldiazonium salts bearing electron-withdrawing group (s), to yield symmetrical biaryls in acetonitrile under mild reaction conditions. Aryldiazonium salts bearing electron-donating groups undergo the reaction by using catalytic amounts of a copper complex prepared in situ from copper (II) triflate and 2, 2′-bipyridine with metallic copper as an ultimate ...