Aminomethylation via Cyclopalladated-Ferrocenylimine-Complexes-Catalyzed Suzuki-Miyaura Coupling of Aryl Halides with Potassium N,N-Dialkylaminomethyltrifluoroborates
作者:Yangjie Wu、Yusheng Wu、Dapeng Zou、Hongmeng Cui、Lijin Qin、Jingya Li
DOI:10.1055/s-0030-1259331
日期:2011.2
Using cyclopalladated ferrocenylimine complexes (1-3 mol%) as catalysts, the Suzuki-Miyaura coupling of potassium N,N-dialkylaminomethyltrifluoroborates with aryl and heteroaryl halides were carried out in a 10:1 THF-H2O mixture at 80 ËC in the presence of Cs2CO3 (3.0 equiv) as base, giving the desired cross-coupling products in 14-87% yields. A variety of potassium alkyltrifluoroborates were also examined.
An efficient method for the reductive amination of carbonyl derivatives with ω‐amino fatty acids catalysed by an iron complex Fe(CO)4(IMes) [IMes=1,3‐bis(2,4,6‐trimethylphenyl)imidazol‐2‐ylidene] by means of hydrosilylation was developed. A variety of pyrrolidines, piperidines and azepanes were selectively synthesised in moderate‐to‐excellent yields (36 examples, 47–97 % isolated yield) with a good
Scope of Aminomethylations via Suzuki−Miyaura Cross-Coupling of Organotrifluoroborates
作者:Gary A. Molander、Paul E. Gormisky、Deidre L. Sandrock
DOI:10.1021/jo800183q
日期:2008.3.1
previously reported the Suzuki−Miyaura reaction of N,N-dialkylaminomethyltrifluoroborates with arylbromides. Herein, we report a further investigation of the scope and limitations of this palladium-catalyzed aminomethylation reaction. Aryl chlorides, iodides, and triflates coupled in good to excellent yields to give N,N-dialkylbenzylic amines. The aminomethylation of alkenyl bromides was also examined.
Photoredox-catalyzed Direct Reductive Amination of Aldehydes without an External Hydrogen/Hydride Source
作者:Rauful Alam、Gary A. Molander
DOI:10.1021/acs.orglett.8b00895
日期:2018.5.4
The direct reductiveamination of aromatic aldehydes has been realized using a photocatalyst under visible light irradiation. The single electron oxidation of an in situ formed aminal species generates the putative α-amino radical that eventually delivers the reductiveamination product. This method is operationally simple, highly selective, and functional group tolerant, which allows the direct synthesis
Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids
作者:Duanyang Kong、Patrick J. Moon、Odey Bsharat、Rylan J. Lundgren
DOI:10.1002/anie.201912518
日期:2020.1.13
the acid unit to generate isocyanate or radical intermediates. Reported here is a process for the direct chemoselective decarboxylative amination of electron-poor arylacetates by oxidative Cu catalysis. The reaction proceeds at (or near) roomtemperature, uses native carboxylicacid starting materials, and is compatible with protic, electrophilic, and other potentially complicating functionality. Mechanistic