N-Heterocyclic carbene-palladacyclic complexes: synthesis, characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides
作者:Feng Liu、Yuan-Yuan Hu、Di Li、Quan Zhou、Jian-Mei Lu
DOI:10.1016/j.tet.2018.07.052
日期:2018.9
a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very lowcatalystloadings (0.01 mol%).
Synthesis of novel (NHC)Pd(acac)Cl complexes (acac=acetylacetonate) and their activity in cross-coupling reactions
作者:Oscar Navarro、Nicolas Marion、Natalie M. Scott、Juan González、Dino Amoroso、Andrew Bell、Steven P. Nolan
DOI:10.1016/j.tet.2005.06.081
日期:2005.10
The synthesis and characterization of two new complexes (IPr)Pd(acac)2 (1) and (IPr)Pd(acac)Cl (2) (IPr=(N,N'-bis(2,6-diisopropylphenyl)imidazol)-2-ylidene, acac=acetylacetonate) are described. Complex 2 can be prepared in a one-pot protocol in high yield. A study detailing the versatility of 2 to effectively catalyze a series of cross-couplingreactions is discussed.
Novel bisamide palladium(II) pincer complexes: effective catalysts in α-arylation of ketones
作者:Wang Kai、Dabin Liu、Hua Qian、Zhiwen Ye
DOI:10.1007/s11243-017-0148-6
日期:2017.8
Three benzenedicarboxamide ligands (L) were designed and synthesized, and each was used to prepare a palladium(II) complex Pd(L)Br and Pd(L)(OAc). These NCN pincer complexes were used to catalyze the α-arylations of a variety of ketones with aryl chlorides or bromides in various solvents, and moderate-to-excellent yields were obtained (up to 95%). Further research showed that unactivated and sterically
Well-Defined, Air-Stable (NHC)Pd(Allyl)Cl (NHC = N-Heterocyclic Carbene) Catalysts for the Arylation of Ketones
作者:Mihai S. Viciu、Romain F. Germaneau、Steven P. Nolan
DOI:10.1021/ol026745m
日期:2002.11.1
A number of palladium-N-heterocycliccarbene (NHC) complexes were found to be active catalysts for the arylation of ketones. A large number of substrates, both aryl halides and ketones, are compatible with the reaction conditions. The ketone arylation reactions are achieved with low catalyst loading in short reaction times using aryl chlorides and triflates as reactive partners. [reaction: see text]
General and Mild Ni<sup>0</sup>-Catalyzed α-Arylation of Ketones Using Aryl Chlorides
作者:José A. Fernández-Salas、Enrico Marelli、David B. Cordes、Alexandra M. Z. Slawin、Steven P. Nolan
DOI:10.1002/chem.201406457
日期:2015.3.2
A general methodology for the α‐arylation of ketones using a nickel catalyst has been developed. The new well‐defined [Ni(IPr*)(cin)Cl] (1 c) pre‐catalyst showed great efficiency for this transformation, allowing the coupling of a wide range of ketones, including acetophenone derivatives, with various functionalised arylchlorides. This cinnamyl‐based Ni–N‐heterocyclic carbene (NHC) complex has demonstrated
已经开发了使用镍催化剂对酮进行α-芳基化的一般方法。定义明确的新型[Ni(IPr *)(cin)Cl](1 c)预催化剂显示出极高的转化效率,使各种酮(包括苯乙酮衍生物)与各种官能化的芳基氯化物偶合。这种基于肉桂基的Ni-N-杂环卡宾(NHC)配合物表现出与以前报道的NHC-Ni催化剂不同的行为。初步的机理研究表明,Ni 0 / Ni II催化循环起作用。