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Influence of the steric hindrance of the aryl group of pentavalent triarylbismuth derivatives in ligand coupling reactions

✍ Scribed by Alexey Fedorov; Sébastien Combes; Jean-Pierre Finet

Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
674 KB
Volume
55
Category
Article
ISSN
0040-4020

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✦ Synopsis

Tris(ortho-tolyl)

bismuth dichloride derivatives react with nucleophiles under basic conditions to give good to high yields of the C-arylated substrates. Under the same conditions, trimesitylbismuth dichloride affords only poor yields of the C-mesitylated substrates. Similar influence of the substitution pattern of tris(ortho-tolyl)bismuth diacetate derivatives was observed in the coppercatalysed arylation of hydroxyl or amino groups.

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ChemInform Abstract: Influence of the St
ChemInform Abstract: Influence of the Steric Hindrance of the Aryl Group of Pentavalent Triarylbismuth Derivatives in Ligand Coupling Reactions.
✍ Alexey Fedorov; Sebastien Combes; Jean-Pierre Finet 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 35 KB 👁 1 views

Influence of the Steric Hindrance of the Aryl Group of Pentavalent Triarylbismuth Derivatives in Ligand Coupling Reactions. -Basepromoted reaction of tris(ortho-tolyl)bismuth dichloride with nucleophiles leads to C-arylated products in good yields. Starting from bulkier trimestitylbismuth dichloride

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✍ Sébastien Combes; Jean-Pierre Finet 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 651 KB

The presence of aryl radical species in the course of arylation reactions with tri and pentavalent organobismuth compounds has been studied by the use of an internal-trap containing reagent: tris(2-allyioxyphenyl)bismuth and its diacetate. The intervention of radical species can be excluded in C-and