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
The direct visible light-mediated C–Halkylation of heteroarenes using aliphatic carboxylic acids is reported. This mild method proceeds at low catalyst loadings (0.5 mol %) and has a high functional group tolerance and a broad substrate scope. Notably, functionalization of (iso)quinoline, pyridine, phthalazine, benzothiazole, and other heterocyclic derivatives with both cyclic and acyclic primary
Visible-Light-Initiated Manganese Catalysis for C−H Alkylation of Heteroarenes: Applications and Mechanistic Studies
作者:Philippe Nuhant、Martins S. Oderinde、Julien Genovino、Antoine Juneau、Yohann Gagné、Christophe Allais、Gary M. Chinigo、Chulho Choi、Neal W. Sach、Louise Bernier、Yvette M. Fobian、Mark W. Bundesmann、Bhagyashree Khunte、Mathieu Frenette、Olugbeminiyi O. Fadeyi
DOI:10.1002/anie.201707958
日期:2017.11.27
A visible‐light‐driven Minisci protocol that employs an inexpensive earth‐abundant metal catalyst, decacarbonyldimanganese Mn2(CO)10, to generate alkyl radicals fromalkyliodides has been developed. This Minisci protocol is compatible with a wide array of sensitive functional groups, including oxetanes, sugar moieties, azetidines, tert‐butyl carbamates (Boc‐group), cyclobutanes, and spirocycles. The
Visible-light-mediated Minisci C–H alkylation of heteroarenes with unactivated alkyl halides using O<sub>2</sub> as an oxidant
作者:Jianyang Dong、Xueli Lyu、Zhen Wang、Xiaochen Wang、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1039/c8sc04892d
日期:——
visible-light-mediated Minisci C–H alkylation of heteroarenes with unactivated alkyl halides using molecular oxygen as an oxidant at room temperature. This mild protocol is compatible with a wide array of sensitive functional groups and has a broad substrate scope. Notably, functionalization of (iso)quinolines, pyridines, phenanthrolines, quinazoline, and other heterocyclic compounds with unactivated primary, secondary
Photoredox-Mediated Minisci C–H Alkylation Reactions between N-Heteroarenes and Alkyl Iodides with Peroxyacetate as a Radical Relay Initiator
作者:Zhen Wang、Jianyang Dong、Yanan Hao、Yongqiang Li、Yuxiu Liu、Hongjian Song、Qingmin Wang
DOI:10.1021/acs.joc.9b02848
日期:2019.12.20
We developed a protocol for photoredox-mediated Minisci C-H alkylation reactions of N-heteroarenes in which readily available tert-butyl peroxyacetate acts as a radical relay precursor to generate alkylradicals from alkyliodides. This mild protocol tolerated a broad range of functional groups and could therefore be used for late-stage functionalization of complex nitrogen-containing natural products