Palladium-Catalyzed Mono-α-arylation of Acetone with Aryl Halides and Tosylates
作者:Kevin D. Hesp、Rylan J. Lundgren、Mark Stradiotto
DOI:10.1021/ja200009c
日期:2011.4.13
selective Pd-catalyzed mono-α-arylation of acetone employing aryl chlorides, bromides, iodides, and tosylates. The use of appropriately designed P,N-ligands proved to be the key to controlling the reactivity and selectivity. The reaction affords good yields with substrates containing a range of functional groups at modest Pd loadings using Cs(2)CO(3) as the base and employing acetone as both a reagent and
Preparation and application of air-stable P,N-bidentate ligands for the selective synthesis of δ-lactone via the palladium-catalyzed telomerization of 1,3-butadiene with carbon dioxide
作者:Yao Dai、Xiujuan Feng、Bin Wang、Ren He、Ming Bao
DOI:10.1016/j.jorganchem.2011.10.011
日期:2012.1
L1–L7 with cyclic secondary amine moieties linked to the benzene rings of triphenylphosphine were designed and prepared. The chelating coordination mode of the P,N-bidentate ligands to the Pd(II) center was confirmed by determining the X-ray structures of the Pd(II) complexes C1 and C2 derived from ligands L1 and L2, respectively. The ligands were used for the selective synthesis of δ-lactone through the