Pd(II)/Pd(IV) redox catalysis. This ligand scaffold overcame two important limitations of the previous MPAHA (mono-N-protected α-amino-O-methylhydroxamic acid) ligand-enabled asymmetric C–H activation/C–C coupling reactions of cyclic carboxylic amides through Pd(II)/Pd(0) catalysis: substrates containing α-hydrogen atoms are not compatible, and vinylation has not been developed. Sequential C–H arylation
Palladium-Catalyzed Carbonylative Transformation of Organic Halides with Formic Acid as the Coupling Partner and CO Source: Synthesis of Carboxylic Acids
作者:Fu-Peng Wu、Jin-Bao Peng、Xinxin Qi、Xiao-Feng Wu
DOI:10.1021/acs.joc.7b01808
日期:2017.9.15
A palladium-catalyzedcarbonylative transformation of organic halides with formic acid as the coupling partner to produce carboxylic acids has been developed. With a catalytic amount of DCC as the activator of formic acid, the process can be realized successfully through benzoic formic anhydride as the intermediate. Both vinyl and aryl (pseudo)halides were conveniently transformed into the corresponding
Gold (I/III)‐Catalyzed Trifluoromethylthiolation and Trifluoromethylselenolation of Organohalides
作者:Sagar R. Mudshinge、Yuhao Yang、Bo Xu、Gerald B. Hammond、Zhichao Lu
DOI:10.1002/anie.202115687
日期:2022.3.14
The first gold(I/III)-catalyzed direct trifluoromethylthiolation and trifluoromethylselenolation of organohalides are reported. This mild and efficient protocol enjoys a broad substrate scope and high yield (>60 examples with up to 97 % isolated yield). Its robustness was demonstrated by the late-stage functionalization of various bioactive molecules, which makes this reaction applicable to pharmaceutical
Cooperative Pd/Cu Catalysis: Multicomponent Synthesis of Tetrasubstituted Imidazolones from Methyl α-Isocyanoacetates, Primary Amines, and Aryl(vinyl) Iodides
作者:Antonin Clemenceau、Qian Wang、Jieping Zhu
DOI:10.1021/acs.orglett.7b03479
日期:2018.1.5
Three-component reaction of methyl α,α-disubstituted α-isocyanoacetates, primary amines, and aryl(vinyl) halides in the presence of Pd(OAc)2 (0.05 equiv) and Cu2O (1.0 equiv) provided 2,3,5,5-tetrasubstituted imidazolones via the formation of three chemical bonds. A copper-mediated migratory insertion of the isocyano group into the N–H bond of the amine followed by lactamization and Pd-catalyzed cross-coupling
Copper-Catalyzed Synthesis of Substituted Quinolines via C–N Coupling/Condensation from <i>ortho</i>-Acylanilines and Alkenyl Iodides
作者:Lingkai Kong、Yuanyuan Zhou、He Huang、Yang Yang、Yuanyuan Liu、Yanzhong Li
DOI:10.1021/jo502630t
日期:2015.1.16
An efficient cascade copper-catalyzed intermolecular Ullmann-type C–N coupling/enamine condensation reaction is described, in which ortho-acylanilines and alkenyl iodides converted to multisubstituted quinolines in good to excellent yields.