Coumarin based novel ligands in the Suzuki–Miyaura and Mizoroki–Heck cross-couplings under aqueous medium
作者:Mohammed Waheed、Naseem Ahmed
DOI:10.1016/j.tetlet.2016.07.028
日期:2016.8
Coumarin-based novel ligands (benzylidine-bis-(4-hydroxycoumarin)-diethylamines) were easily synthesized using 4-hydroxycoumarin, aromatic aldehydes, and diethylamine. The ionic ligand structure was established by X-ray study. They are air and moisture stable ligands and have shown highly efficient catalytic activity with Pd(OAc)2 (0.1 mol % loading) in the Suzuki–Miyaura and (0.3 mol % loading) in
Pd/Indanone-Based Ligands: An Efficient Catalyst System for Ullmann-Type, Suzuki–Miyaura, and Mizoroki–Heck Cross-Coupling Reactions with Aryl Tosylates and Aryl Halides
作者:Mohammed Waheed、Naseem Ahmed
DOI:10.1055/s-0036-1589058
日期:2017.9
efficiency. 2-Hydroxyindan-1-ones have been efficiently synthesized and successfully applied as ligands in Pd-catalyzed Ullmann type, Suzuki–Miyaura, and Mizoroki–Heckcross-couplingreactions with aryl tosylates and aryl halides. The ligands are air- and moisture-stable and have shown high catalytic activity with Pd(OAc)2 in these cross-couplingreactions. The system tolerates a variety of functional