Tetrahedron letters

Coupling of butyl vinyl tellurides with metal acetylides catalyzed by nickel complexes

C Raminelli, J Gargalaka, CC Silveira, JV Comasseto

Index: Raminelli, Cristiano; Gargalaka Jr., Joao; Silveira, Claudio C.; Comasseto, Joao V. Tetrahedron Letters, 2004 , vol. 45, # 25 p. 4927 - 4930

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Citation Number: 21

Abstract

However, the preparation of bis-vinylic tellurides by hydrotelluration of alkynes is not general, specially for the preparation of telluroenynes 5. Attempts to prepare 5 by this method led to the formation of tellurophenes 6, as described earlier. 7 The hydrotelluration leading to butyltelluroenynes 7, on the contrary, is quite general producing the desired Z-vinylic tellurides in good yields 1 (Scheme 2). ... In view of this we attempted the coupling of Z-butyl vinyl ...