Stereospecific synthesis of alkenyl sulphides by cross-coupling reactions of secondary alkyl Grignard reagents with Z-or E-1-bromo-2-phenylthioethene in the …

V Fiandanese, G Miccoli, F Naso, L Ronzini

Index: Fiandanese, Vito; Miccoli, Giovanni; Naso, Francesco; Ronzini, Ludovico Journal of Organometallic Chemistry, 1986 , vol. 312, p. 343 - 348

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Citation Number: 24

Abstract

Abstract Z-and E-1-bromo-2-phenylthioethenes were cross-coupled stereospecifically with s- alkyl Grignard reagents in the presence of a series of Ni II, Pd II or Fe III catalysts with the aim of finding a catalyst which would not cause s-alkyl→ n-alkyl isomerization. With PdCl 2 (dppf)(dppf= 1, 1′-bis (diphenylphosphino) ferrocene) and NiCl 2 (dppe)(dppe= 1, 2-bis (diphenylphosphino) ethane) there was still some isomerization contribution, but it was ...