Thianthrenation-Enabled α-Arylation of Carbonyl Compounds with Arenes
作者:Xiao-Xue Nie、Yu-Hao Huang、Peng Wang
DOI:10.1021/acs.orglett.0c02913
日期:2020.10.2
The Pd-catalyzed α-arylation of carbonylcompounds with simple arenes enabled by site-selective thianthrenation has been demonstrated. This one-pot process using thianthrenium salts as the traceless arylating reagents features mild conditions and a broad substrate scope. In addition, this protocol could also tolerate the heterocyclic carbonylcompounds and complex bioactive molecules, which is appealing
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
Exploiting Aryl Mesylates and Tosylates in Catalytic Mono-α-arylation of Aryl- and Heteroarylketones
作者:Wai Chung Fu、Chau Ming So、On Ying Yuen、Irene Toi Chuk Lee、Fuk Yee Kwong
DOI:10.1021/acs.orglett.6b00643
日期:2016.4.15
The first general palladium catalyst for the catalytic mono-α-arylation of aryl- and heteroarylketones with arylmesylates and tosylates is described. The newly developed indolyl-derived phosphine ligand L7 has been identified to promote this reaction efficiently. The key to success is attributed to the enhanced steric congestion of the catalyst and effective oxidative addition of the C(Ar)–OMs bond
Catalytic mutual multicomponent reaction: facile access to α-trifluoromethylthiolated ketones
作者:Ming Yu Jin、Xiaodong Gu、Min Deng、Chuancheng Wang、Jun (Joelle) Wang
DOI:10.1039/d0cc04555a
日期:——
A multicomponent catalytic reaction between ketones, Morita–Baylis–Hillman (MBH) carbonates and trifluoromethylthiolating agents is devised for straightforwardly accessing two products, α-trifluoromethylthiolated ketones and α-methylene β-amino esters in a one pot fashion. Particularly noteworthy is that the trifluoromethylthiolating reagent is employed as both the nitrogen and SCF3 source initiated