Cross-Selective Aza-Pinacol Coupling via Atom Transfer Catalysis
作者:Sean M. Rafferty、Joy E. Rutherford、Lumin Zhang、Lu Wang、David A. Nagib
DOI:10.1021/jacs.1c00886
日期:2021.4.21
homodimerization by a classical reductive approach. In this first example of reductive, ketyl coupling by atom transfer catalysis, Zn serves as a terminal reductant to facilitate Mn catalyst turnover. This new strategy also enables ketyl radical couplings to alkenes, alkynes, aldehydes, propellanes, and chiral imines.
Iridium-Catalyzed Annulation of Aromatic Imines with 1,3-Dienes<i>via</i>Direct Functionalization of an Aromatic CH Bond
作者:Yusuke Ebe、Miyuki Hatano、Takahiro Nishimura
DOI:10.1002/adsc.201401171
日期:2015.5.4
to give 1‐aminoindane derivatives in high yields with high regio‐ and stereoselectivities. The iridium complex coordinated with a substrate 1,3‐diene displayed high catalyticactivity. The reaction proceeds via the direct formation of the aryliridium(I) species from the aromatic aldimine and an iridium(I) acetate species via a concerted metalation‐deprotonation pathway.
Mild, Redox-Neutral Alkylation of Imines Enabled by an Organic Photocatalyst
作者:Niki R. Patel、Christopher B. Kelly、Allison P. Siegenfeld、Gary A. Molander
DOI:10.1021/acscatal.6b03665
日期:2017.3.3
operationally simple, mild, redox-neutral method for the photoredox alkylation of imines is reported. Utilizing an inexpensive organic photoredox catalyst, alkyl radicals are readily generated from the single-electron oxidation of ammonium alkyl bis(catecholato)silicates and are subsequently engaged in a C–C bond-forming reaction with imines. The process is highly selective, metal-free, and does not require
Independence from the Sequence of Single-Electron Transfer of Photoredox Process in Redox-Neutral Asymmetric Bond-Forming Reaction
作者:Tomohito Kizu、Daisuke Uraguchi、Takashi Ooi
DOI:10.1021/acs.joc.6b00445
日期:2016.8.19
chiral (arylamino)phosphonium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate under visible light irradiation. This achievement clearly demonstrates the insensitivity of this redox-neutral asymmetric reaction to the sequence of the key redox events involved in the synergistic catalysis.
Catalyst free decarboxylative trichloromethylation of aldimines
作者:Eloah P. Ávila、Isabella F. de Souza、Alline V. B. Oliveira、Vinicius Kartnaller、João Cajaiba、Rodrigo O. M. A. de Souza、Charlane C. Corrêa、Giovanni W. Amarante
DOI:10.1039/c6ra23936f
日期:——
A catalystfree decarboxylative trichloromethylation of imines to afford different trichloromethyl sulfonyl and sulfinyl amines has been presented. Only DMSO as a solvent at room temperature was necessary to provide the corresponding products in good to high isolated yields. A highly diastereoselective version was carried out, leading to the sulfinylimine with good yield and near perfect diastereoselectivity