Ni-Catalyzed Electrochemical Decarboxylative C–C Couplings in Batch and Continuous Flow
作者:Hui Li、Christopher P. Breen、Hyowon Seo、Timothy F. Jamison、Yuan-Qing Fang、Matthew M. Bio
DOI:10.1021/acs.orglett.8b00070
日期:2018.3.2
An electrochemically driven, nickel-catalyzed reductive coupling of N-hydroxyphthalimide esters with aryl halides is reported. The reaction proceeds under mild conditions in a divided electrochemical cell and employs a tertiaryamine as the reductant. This decarboxylative C(sp3)-C(sp2) bond-forming transformation exhibits excellent substrate generality and functional group compatibility. An operationally
Tandem Photoredox and Copper-Catalyzed Decarboxylative C(sp<sup>3</sup>)–N Coupling of Anilines and Imines Using an Organic Photocatalyst
作者:Guido Barzanò、Runze Mao、Marion Garreau、Jerome Waser、Xile Hu
DOI:10.1021/acs.orglett.0c01769
日期:2020.7.17
An organic photoredox catalyst, 4CzIPN, was used in combination with a coppercatalyst, CuCl, to effect decarboxylative C(sp3)–N coupling. The coupling worked with both anilines and imines as nitrogen sources and could be used to prepare a variety of alkyl amines from readily available alkyl carboxylic acids.
Organocatalyzed, Visible-Light Photoredox-Mediated, One-Pot Minisci Reaction Using Carboxylic Acids via <i>N</i>-(Acyloxy)phthalimides
作者:Trevor C. Sherwood、Ning Li、Aliza N. Yazdani、T. G. Murali Dhar
DOI:10.1021/acs.joc.8b00205
日期:2018.3.2
one-pot Minisci reaction has been developed using visible light, an organic photocatalyst, and carboxylic acids as radical precursors via the intermediacy of in situ-generated N-(acyloxy)phthalimides. The conditions employed are mild, demonstrate a high degree of functional group tolerance, and do not require a large excess of the carboxylic acid reactant. As a result, this reaction can be applied to
known synthetic methods often suffer from the disadvantage of being specific only to certain substrates. Herein, we describe a facile decarboxylative thioesterification of alkyl acid derived redox-active esters by merging photoredoxcatalysis and copper catalysis. This reaction is applicable to a wide range of carboxylic acids, as well as natural products and drugs, allowing for the synthesis of various