An Efficient and Simple Aqueous N-Heterocyclization of Aniline Derivatives: Microwave-Assisted Synthesis of <i>N</i>-Aryl Azacycloalkanes
作者:Yuhong Ju、Rajender S. Varma
DOI:10.1021/ol050683t
日期:2005.6.1
[reaction: see text] An efficient and clean synthesis of N-aryl azacycloalkanes from alkyl dihalides and aniline derivatives has been achieved using microwave irradiation in an aqueous potassium carbonate medium. The phase separation can simplify the product isolation and reduce usage of volatile organic solvents.
A Highly Selective Palladium-Catalyzed Aerobic Oxidative Aniline–Aniline Cross-Coupling Reaction
作者:Kenji Matsumoto、Satoshi Takeda、Tsukasa Hirokane、Masahiro Yoshida
DOI:10.1021/acs.orglett.9b02527
日期:2019.9.20
The first catalytic oxidative aniline-aniline cross-coupling reaction using oxygen as the terminal oxidant is reported. Anilines possessing a pyrrolidino group can be preferentially oxidized under mild aerobic conditions and reacted with other anilines to afford a variety of nonsymmetrical 2-aminobiphenyls with high selectivities. A heterogeneous palladium catalyst is used for the dehydrogenative cross-coupling
Controlling One- or Two-Electron Oxidation for Selective Amine Functionalization by Alternating Current Frequency
作者:Disni Gunasekera、Jyoti P. Mahajan、Yanick Wanzi、Sachini Rodrigo、Wei Liu、Ting Tan、Long Luo
DOI:10.1021/jacs.2c02605
日期:2022.6.8
Here, we report a unique electrosynthetic method that enables the selective one-electron oxidation of tertiaryamines to generate α-amino radical intermediates over two-electron oxidation to iminium cations, providing easy access to arylation products by simply applying an optimal alternating current (AC) frequency. More importantly, we have discovered an electrochemical descriptor from cyclic voltammetry
Aqueous N-Heterocyclization of Primary Amines and Hydrazines with Dihalides: Microwave-Assisted Syntheses of <i>N</i>-Azacycloalkanes, Isoindole, Pyrazole, Pyrazolidine, and Phthalazine Derivatives
作者:Yuhong Ju、Rajender S. Varma
DOI:10.1021/jo051878h
日期:2006.1.1
The synthesis of nitrogen-containing heterocycles from alkyl dihalides (ditosylates) and primary amines and hydrazines via a simple and efficient cyclocondensation in an alkaline aqueous medium that occurs under microwave irradiation is described. This improved greener synthetic methodology provides a simple C C and straightforward one-pot approach to the synthesis of a variety of heterocycles, such as substituted azetidines, pyrrolidines, piperidines, azepanes, N-substituted 2,3-diliydro-1H-isoindoles. 4,5-dihydropyrazoles, pyrazolidines, and 1,2-dihydrophthalazines.
Hamid, M. Haniti S. A.; Allen, C. Liana; Lamb, Gareth W., Journal of the American Chemical Society, 2009, vol. 131, p. 1766 - 1774
作者:Hamid, M. Haniti S. A.、Allen, C. Liana、Lamb, Gareth W.、Maxwell, Aoife C.、Maytum, Hannah C.、et al.