Ligand-Enabled Gold-Catalyzed C(sp<sup>2</sup>)–N Cross-Coupling Reactions of Aryl Iodides with Amines
作者:Manjur O. Akram、Avishek Das、Indradweep Chakrabarty、Nitin T. Patil
DOI:10.1021/acs.orglett.9b03082
日期:2019.10.4
example of ancillary (P,N)-ligand-enabled gold-catalyzed C-N cross-couplingreactions of aryl iodides with amines is reported. The high generality of the reaction in de novo synthesis, late-stage modifications, and cascade processes to access functionalized indolinones and carbazoles underscores the synthetic potential of the presented strategy. Monitoring the reaction with ESI-HRMS and NMR provided strong
Selective Monoarylation of Primary Anilines Catalyzed by Pd(dippf) and its Application in OLED Component Synthesis
作者:Matthias F. Grünberg、Fan Jia、Andreas Rivas-Nass、Lukas J. Gooßen
DOI:10.1002/adsc.201501160
日期:2016.5.19
Palladium 1,1′‐bis(diisopropylphosphino)‐ferrocene [Pd(dippf)] complexes were found to promote the monoarylation of primaryanilines with unprecedented selectivities. They also allow the sequential arylation of primaryanilines with two different aryl bromides in one pot. The reactions can be performed at low catalyst loadings (0.2 mol%) and high substrate concentrations. The synthetic utility of the
A Mild and Efficient Palladium-Catalyzed Cyanation of Aryl Chlorides with K<sub>4</sub>[Fe(CN)<sub>6</sub>]
作者:Pui Yee Yeung、Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1021/ol1028892
日期:2011.2.18
the presence of a highlyeffective Pd/CM-phos catalyst, cyanation of aryl chlorides proceeds at 70 °C in general, which is the mildest reaction temperature achieved so far for this process. Common functional groups such as keto, aldehyde, ester, nitrile and −NH2, and heterocyclic coupling partners including N−H indoles are well tolerated. Moreover, a sterically hindered nonactivated ortho,ortho-disubstituted
Nickel/Photoredox Dual Catalytic Chan‐Lam Coupling of Aryl Azides and Arylboric Acids
作者:Xia Ge、Haojie Ji、Hongjian Lu
DOI:10.1002/cjoc.202400276
日期:2024.9.15
utilizes phenylboronic acids and arylazides as coupling agents in a redox-neutral environment, enabled by a synergistic nickel/photoredox catalytic system. This approach leverages a proton-coupled electron transfer mechanism to bypass the typical nitrene pathway associated with arylazides, which is prone to intramolecular rearrangement, C—H amination, and reductive hydrogenation. Notably, our method
Pyrrole-2-carboxylic Acid as a Ligand for the Cu-Catalyzed Reactions of Primary Anilines with Aryl Halides
作者:Ryan A. Altman、Kevin W. Anderson、Stephen L. Buchwald
DOI:10.1021/jo8008676
日期:2008.7.1
Pyrrole 2-carboxylic acid (L5) was found to be an effective ligand for the Cu-catalyzed monoarylation of anilines with aryl iodides and bromides. Under the reported conditions (10% CuI/20% L5/DMSO/K(3)PO(4)/80-100 degrees C/20-24 h), a variety of useful functional groups were tolerated, and moderate to good yields of the diaryl amine products were obtained.