Platinum-Catalyzed Intermolecular Hydroamination of Vinyl Arenes with Carboxamides
摘要:
Reaction of benzamide with 4-methylstyrene catalyzed by a 1:2 mixture Of [PtCl2(H2C = CH2)](2) and P(4-C6H4CF3)(3) (5 mol %) in mesitylene at 140 degrees C for 24 h led to the isolation of M(1-p-tolylethyl)benzamide in 85% yield. Electron-rich, electron-poor, and hindered vinyl arenes underwent Markovnikov hydroamination with a range of carboxamides and amide derivatives in moderate to good yield with excellent regioselectivity.
One-Pot Synthesis of α-Branched <i>N</i>-Acylamines via Titanium-Mediated Condensation of Amides, Aldehydes, and Organometallics
作者:Chunhui Dai、Julien Genovino、Bruce M. Bechle、Matthew S. Corbett、Chan Woo Huh、Colin R. Rose、Jianmin Sun、Joseph S. Warmus、David C. Blakemore
DOI:10.1021/acs.orglett.7b00082
日期:2017.3.3
A three-component, titanium-mediated synthesis of α-branched N-acylamines from commercial or readily accessible amides, aldehydes, and organometallic reagents is reported. The transformation proceeds under mild reaction conditions and tolerates a variety of functional groups (including nitrile, carbamate, olefin, basic amine, furan, and other sensitive heteroaromatics) to generate a large umbrella
Copper-Catalyzed Ligand-Free Amidation of Benzylic Hydrocarbons and Inactive Aliphatic Alkanes
作者:Hui-Ting Zeng、Jing-Mei Huang
DOI:10.1021/acs.orglett.5b02063
日期:2015.9.4
An efficientcopper-catalyzedamidation of benzylichydrocarbons and inactive aliphatic alkanes with simple amides was developed. The protocol proceeded smoothly without any ligand, and a wide range of N-alkylated aromatic and aliphatic amides, sulfonamides, and imides were synthesized in good yields.
Secondary Benzylation with Benzyl Alcohols Catalyzed by A High-Valent Heterobimetallic Ir−Sn Complex
作者:Susmita Podder、Joyanta Choudhury、Sujit Roy
DOI:10.1021/jo0625094
日期:2007.4.1
A highly efficient secondary benzylation procedure has been demonstrated using a high-valent heterobimetallic complex [Ir2(COD)2(SnCl3)2(Cl)2(μ-Cl)2] 1 as the catalyst in 1,2-dichloroethane to afford the corresponding benzylated products in moderate to excellent yields. The reaction was performed not only with carbon nucleophiles (arenes and heteroarenes) but also with oxygen (alcohol), nitrogen (amide
Au(iii)-catalyzed intermolecular amidation of benzylic C–H bonds
作者:Yan Zhang、Bainian Feng、Chengjian Zhu
DOI:10.1039/c2ob26857d
日期:——
Au(III)-catalyzed intermolecular amidations of benzylic C–H bonds with sulfonamides and carboxamides are described. The protocol with the Au–bipy complex/N-bromosuccinimide system provides practical applications for synthesis of various amides via C–H activations. The reaction proceeds with high efficiency to give the corresponding amines, which are extremely useful synthetic intermediates.
Electro/Ni Dual‐Catalyzed Decarboxylative C(sp3)−C(sp2) Cross‐Coupling Reactions of Carboxylates and Aryl Bromide
作者:Jian Luo、Michael T. Davenport、Daniel H. Ess、T. Leo Liu
DOI:10.1002/anie.202403844
日期:2024.5.27
Electro/Ni dual-catalyzed redox-neutral C(sp3)−C(sp2) cross-coupling reactions of widely available carboxylate nucleophiles with aryl bromides are developed. The electro/Ni dual-catalyzed redox-neutral cross-coupling expands the chemical space of paired electrosynthesis and represents a sustainable method for the construction of the C(sp3)−C(sp2) bond.