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 substi
On the exclusion of radical species in the ligand coupling reactions with pentavalent triarylbismuth derivatives
✍ Scribed by Sébastien Combes; Jean-Pierre Finet
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 651 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0040-4020
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✦ Synopsis
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 O-arylation under basic conditions as well as in copper catalyzed O-and N-arylation, as eyelized products were never detected in any of these reactions.
📜 SIMILAR VOLUMES
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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