Ruthenium-catalyzed ortho-C–H halogenations of benzamides
作者:Lianhui Wang、Lutz Ackermann
DOI:10.1039/c3cc47852a
日期:——
[Ru3(CO)12] and AgO2C(1-Ad) enabled the first ruthenium-catalyzed intermolecular halogenations of arenes via CâH activation. Thereby, brominations and iodinations of electron-rich and electron-deficient benzamides were achieved in a highly selective fashion.
A rhodium(III)‐catalyzed direct ortho CH bond olefination of arenes, including but not limited to benzamides, arylpyridines and indoles, with a variety of unactivated aliphatic olefins has been developed. In the presence of catalytic amounts of dichloro(pentamethylcyclopentadienyl)rhodium(III) dimer [Cp*RhCl2]2}, copper(II) acetate monohydrate [Cu(OAc)2⋅H2O] and silver hexafluoroantimonate(V) (AgSbF6)
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‐Selective Fluoroalkenylation of (Hetero)Aromatic Systems by Iodonium Reagents in Palladium‐Catalyzed Directed C−H Activation
作者:Balázs L. Tóth、Gergő Sályi、Attila Domján、Orsolya Egyed、Attila Bényei、Zsombor Gonda、Zoltán Novák
DOI:10.1002/adsc.202101108
日期:2022.1.18
The direct and catalytic incorporation of fluorine containing molecular motifs into organic compounds resulting high-value added chemicals represents a rapidly evolving part of synthetic methodologies, thus this area is in the focus of pharmaceutical and agrochemical research. Herein we report a stereoselective procedure for direct fluorovinylation of aromatic and heteroaromatic scaffolds. This methodology
Directed <i>ortho</i>-metalation–nucleophilic acyl substitution strategies in deep eutectic solvents: the organolithium base dictates the chemoselectivity
作者:Simone Ghinato、Giuseppe Dilauro、Filippo Maria Perna、Vito Capriati、Marco Blangetti、Cristina Prandi
DOI:10.1039/c9cc03927a
日期:——
Directed ortho metalation (DoM) or nucleophilic acylsubstitution (SNAc) can be efficiently programmed on the same aromatic carboxylic acid amide, in a choline chloride-based eutectic mixture, by simply switching the nature of the organolithium reagent. Telescoped, one-pot ortho-lithiation/Suzuki–Miyaura cross-couplings have also been demonstrated for the first time in Deep Eutectic Solvents.
定向邻位金属化(d Ò M)或亲核酰基取代(S Ñ AC)可以有效地设定为在同芳族羧酸酰胺,在基于氯化物胆碱共熔混合物,通过简单地切换有机锂试剂的性质。伸缩式单罐正锂化/铃木-宫浦交叉联结也已在深共晶溶剂中首次得到证明。
Asymmetric Deoxygenative Alkynylation of Tertiary Amides Enabled by Iridium/Copper Bimetallic Relay Catalysis
作者:Zhaokun Li、Feng Zhao、Wei Ou、Pei‐Qiang Huang、Xiaoming Wang
DOI:10.1002/anie.202111029
日期:2021.12.13
An Ir/Cu bimetallicrelaycatalysis was developed to achieve the challenging asymmetricdeoxygenativealkynylation of inert amides under mild conditions, affording a series of synthetically important chiral propargylamines in high yields with good to excellent enantioselectivities.