Synthesis of α-Aryl Nitriles through Palladium-Catalyzed Decarboxylative Coupling of Cyanoacetate Salts with Aryl Halides and Triflates
作者:Rui Shang、Dong-Sheng Ji、Ling Chu、Yao Fu、Lei Liu
DOI:10.1002/anie.201006763
日期:2011.5.2
Worth its salt: The palladium‐catalyzed decarboxylativecoupling of the cyanoacetate salt as well as its mono‐ and disubstituted derivatives with aryl chlorides, bromides, and triflates is described (see scheme). This reaction is potentially useful for the preparation of a diverse array of α‐arylnitriles and has good functional group tolerance. S‐Phos=2‐(2,6‐dimethoxybiphenyl)dicyclohexylphosphine)
Selective α‐Monomethylation by an Amine‐Borane/
<i>N</i>
,
<i>N</i>
‐Dimethylformamide System as the Methyl Source
作者:Hui‐Min Xia、Feng‐Lian Zhang、Tian Ye、Yi‐Feng Wang
DOI:10.1002/anie.201804794
日期:2018.9.3
A new and practical α‐monomethylation strategy using an amine‐borane/N,N‐dimethylformamide (R3N‐BH3/DMF) system as the methyl source was developed. This protocol has been found to be effective in the α‐monomethylation of arylacetonitriles and arylacetamides. Mechanistic studies revealed that the formyl group of DMF delivered the carbon and one hydrogen atoms of the methyl group, and R3N‐BH3 donated
The identification of novel pyrazolyl acrylonitrile acaricides with improved properties is of great value for the control of phytophagous mites. A series of innovative silicon-containing pyrazolyl acrylonitriles were rationally designed by applying a bioisosteric carbon–silicon replacementstrategy and prepared based on novel synthetic methodology. As a result of our research, we discovered compound
Computer‐Driven Development of Ylide Functionalized Phosphines for Palladium‐Catalyzed Hiyama Couplings
作者:Jonas F. Goebel、Julian Löffler、Zhongyi Zeng、Jens Handelmann、Albert Hermann、Ilja Rodstein、Tobias Gensch、Viktoria H. Gessner、Lukas J. Gooßen
DOI:10.1002/anie.202216160
日期:2023.2.20
Ylidefunctionalizedphosphines were tailored supported by computational inverse catalyst design to fit the requirements of mild Hiyamacouplings of aryl chlorides. YPhos/Pd catalyst is highly efficient for the coupling with aryl chlorides in general, and the reaction shows excellent functional group compatibility.