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
Copper-Catalyzed Decarboxylative Radical Silylation of Redox-Active Aliphatic Carboxylic Acid Derivatives
作者:Weichao Xue、Martin Oestreich
DOI:10.1002/anie.201706611
日期:2017.9.11
A decarboxylative silylation of aliphatic N‐hydroxyphthalimide (NHPI) esters using Si−B reagents as silicon pronucleophiles is reported. This C(sp3)−Si cross‐coupling is catalyzed by copper(I) and follows a radical mechanism, even with exclusion of light. Both primary and secondary alkyl groups couple effectively, whereas tertiary alkyl groups are probably too sterically hindered. The functional‐group
Organocatalytic decarboxylative alkylation of <i>N</i>-hydroxy-phthalimide esters enabled by pyridine-boryl radicals
作者:Liuzhou Gao、Guoqiang Wang、Jia Cao、Dandan Yuan、Cheng Xu、Xuewen Guo、Shuhua Li
DOI:10.1039/c8cc06152a
日期:——
The decarboxylative alkylation of N-hydroxyphthalimide (NHPI) based reactive esters with olefins has been achieved via an organocatalytic strategy. Control experiments and density functional theory calculations suggest that these reactions involve a boryl-radical mediated decarboxylation pathway, which is different from the single electron transfer involved in decarboxylative alkylation reactions reported
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.