Tetrahedron letters

Synthesis of stereoisomerically pube (E)-1, 5-diyn-3-enes and (E)-1-bromo-3-yn-1-enes by diastereoselective palladium-catalyzed cross-coupling reaction of 1- …

A Carpita, R Rossi

Index: Carpita, Adriano; Rossi, Renzo Tetrahedron Letters, 1986 , vol. 27, # 36 p. 4351 - 4354

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Citation Number: 39

Abstract

Abstract In the stepeospecific palladium-catalyzed cross coupling reaction of 1-alkynylzinc chlorides,(E)-1, 2-dibromoethylene reacts preferentially in the presence of (Z)-1, 2- dibromoethylene. Products of di-or mono-substitution can be obtained according to the ratio of reagents.