NiXantphos: A Deprotonatable Ligand for Room-Temperature Palladium-Catalyzed Cross-Couplings of Aryl Chlorides
作者:Jiadi Zhang、Ana Bellomo、Nisalak Trongsiriwat、Tiezheng Jia、Patrick J. Carroll、Spencer D. Dreher、Matthew T. Tudge、Haolin Yin、Jerome R. Robinson、Eric J. Schelter、Patrick J. Walsh
DOI:10.1021/ja411855d
日期:2014.4.30
remarkable chemoselectivity in the presence of aryl chloride substrates bearing heteroaryl groups and sensitive functional groups that are known to undergo 1,2-addition, aldol reaction, and O-, N-, enolate-α-, and C(sp2)–H arylations. The advantages and importance of the Pd–NiXantphos catalyst system outlined herein make it a valuable contribution for applications in Pd-catalyzed arylationreactions with
New C 2 -symmetric six-membered carbene ligands incorporating two hydroxyl groups for palladium-catalyzed deprotonative-cross-coupling processes (DCCP) of sp 3 C–H bonds in diarylmethanes
作者:Bi-Hui Zhou、Chen Wu、Xing-Xiu Chen、Hong-Xia Huang、Lin-Lin Li、Li-Mei Fan、Jie Li
DOI:10.1016/j.tetlet.2017.09.022
日期:2017.11
N-heterocyclic carbene, were synthesized in high yields using a two-step procedure starting from commercially available amino alcohols. In situ prepared corresponding carbenes were tested in palladium-catalyzed C(sp3)−H arylation of 4-benzylpyridine with aryl bromides, affording triarylmethane derivatives in high yields.