Expedited Palladium-Catalyzed Amination of Aryl Nonaflates through the Use of Microwave-Irradiation and Soluble Organic Amine Bases
作者:Rachel E. Tundel、Kevin W. Anderson、Stephen L. Buchwald
DOI:10.1021/jo052131u
日期:2006.1.1
Microwave-assisted, palladium-catalyzed C−N bond-forming reactions with aryl/heteroaryl nonaflates and aminesusing the soluble aminebases DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) or MTBD (7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene) and ligands (1−3) resulted in good to excellent yields (71−99%) of arylamines in short reaction times (1−45 min).
Visible-Light-Mediated Umpolung Reactivity of Imines: Ketimine Reductions with Cy<sub>2</sub>NMe and Water
作者:Rui Wang、Mengyue Ma、Xu Gong、Grace B. Panetti、Xinyuan Fan、Patrick J. Walsh
DOI:10.1021/acs.orglett.8b00778
日期:2018.4.20
carbanionic reactivity of imines mediated by photoredox catalysis is demonstrated. The umpolung imine reactivity is exemplified by proton abstraction from water as a key step in the reduction of benzophenone ketimines to amines (up to 98% yield). Deuterium is introduced into amines efficiently using D2O as an inexpensive deuterium source (≥95% D ratio). The mechanism of this unusual transformation
Trans-Spanned Palladium Catalyst for Mild and Efficient Amination of Aryl Halides with Benzophenone Imine
作者:Dmitri Gelman、Olga Grossman、Karola Rueck-Braun
DOI:10.1055/s-2008-1032142
日期:2008.2
A new protocol for palladium-catalyzed Buchwald-Hartwig amination of aryl chlorides and bromides with benzophenone imine as ammonia surrogate is described. The suggested reaction conditions are mild and may therefore be applied to a variety of sensitive starting materials.
Mild conditions for Pd-catalyzed conversion of aryl bromides to primary anilines using benzophenone imine
作者:Swapna Bhagwanth、George M. Adjabeng、Keith R. Hornberger
DOI:10.1016/j.tetlet.2009.01.091
日期:2009.4
Mild (30 °C) and efficient (53–91%) conversion of aryl bromides to primary anilines using a Pd-catalyzed amination strategy is described. A detailed account of the ligand optimization, base and solvent selection, and general substrate scope of this methodology is described herein.
An efficient nickel‐catalyzeddecarbonylative amination reaction of aryl and heteroaryl esters has been achieved for the first time. The new amination protocol allows the direct interconversion of esters and amides into the corresponding amines and represents a good alternative to classical rearrangements as well as cross coupling reactions.