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Synthesis of a diverse set of phosphorus ligands on solid support and their screening in the Heck reaction

✍ Scribed by Amal Mansour; Moshe Portnoy

Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
150 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis

Representative members from five different families of supported phosphine and phosphinite ligands have been prepared from common templates-polymer-bound aminoalcohols. These include b-aminophosphines, N,b-diphosphinoamines, a,b-diphosphinoamines, b-aminophosphinites and N-phosphino-b-aminophosphinites. Representatives of each family of ligands were complexed with Pd(OAc) 2 and screened in the Heck reaction of iodo-and bromobenzene. While the reaction of iodoarenes is ligand-independent, the reaction of bromoarenes is ligand-sensitive. The rationale for this behavior is suggested. Lead ligands for the reaction of bromoarenes were determined.

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The Design and Synthesis of Bis(thiourea
The Design and Synthesis of Bis(thiourea) Ligands and Their Application in Pd-Catalyzed Heck and Suzuki Reactions Under Aerobic Conditions
✍ Wei Chen; Rui Li; Bo Han; Bang-Jing Li; Ying-Chun Chen; Yong Wu; Li-Sheng Ding; πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 198 KB

## Abstract New, bulky __N__,__N__‐disubstituted acyclic and cyclic bis(thiourea) ligands have been designed and synthesized. Their palladium(0) complexes are very stable and are active catalysts for Heck and Suzuki coupling reactions of aryl iodides and bromides under aerobic conditions. Good TONs