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Influence of the gegenion in the transmetalation reaction of vinylic tellurides with higher order cyanocuprates

✍ Scribed by André Chieffi; João V. Comasseto

Publisher
Elsevier Science
Year
1994
Tongue
French
Weight
273 KB
Volume
35
Category
Article
ISSN
0040-4039

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✦ Synopsis

Dilithium cyanocuprates R*LCu(CN)Li2 (L=2-Th, Me) react with vinylic tellurides of Z configuration, RCH=CHTeRl to give higher order vinylic cyanocuprates, [(RCH=CH)LCu(CN)Li2]. By changing the gegenion from lithium to magnesium [R2LCu(CN)LiMgBr or R2LCu(CN)(MgBr)2] the reaction gives cross -coupling products of Z configuration, RCH=CHR2 in good yields.

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