Ammonium persulfate activated DMSO as a one-carbon synthon for the synthesis of methylenebisamides and other applications
作者:Pankaj S. Mahajan、Subhash D. Tanpure、Namita A. More、Jayant M. Gajbhiye、Santosh B. Mhaske
DOI:10.1039/c5ra21801b
日期:——
Activation of DMSO to work as an economical and environmentally benign one-carbon synthon has been achieved by using a bench-top reagent ammonium persulfate for general and efficient access to symmetrical methylenebisamides from primary amides. This methodology was used to achieve a three-component Mannich reactionusing acetophenone, saccharin and DMSO to furnish a β-aminoketone. It also provided
Autotandem Catalysis: Inexpensive and Green Access to Functionalized Ketones by Intermolecular Iron‐Catalyzed Amidoalkynylation/Hydration Cascade Reaction via
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‐Acyliminium Ion Chemistry
作者:Sidi Mohamed Abdallahi、Ewies F. Ewies、Mohamed El‐Shazly、Brahim Ould Elemine、Abderrahmane Hadou、Ján Moncol、Ata Martin Lawson、Adam Daich、Mohamed Othman
DOI:10.1002/chem.202102357
日期:2021.11.5
intermolecular alkynylation reactions of various alkoxy, acetoxylactams, and hydroxylactams. This chemistry broadens the scope of iron catalysis by highlighting new aspects of iron salts σ-Lewis acidity. More importantly, this approach is amenable to an unprecedented tandem intermolecular alkynylation/intramolecular hydration sequence affording expedient access to a new carbonyl structures.
Oxidative C–S bond cleavage reaction of DMSO for C–N and C–C bond formation: new Mannich-type reaction for β-amino ketones
作者:Kai Sun、Yunhe Lv、Zhonghong Zhu、Liping Zhang、Hankui Wu、Lin Liu、Yongqing Jiang、Beibei Xiao、Xin Wang
DOI:10.1039/c4ra14249g
日期:——
A novel oxidative C–S bondcleavagereaction of DMSO for N-methylation and subsequent C–C bondformation is described. A series of aryl ketones as well as acetone derivatives could be selectively converted into the corresponding β-amino ketones. Mechanistic studies suggested that N-methylation between imine and DMSO was involved in the reaction.
Direct N-Methylation Reaction Using DMSO as One-Carbon Bridge: Convenient Access to Heterocycle-Containing β-Amino Ketones
作者:Kai Sun、Xin Wang、Yongqing Jiang、Yunhe Lv、Liping Zhang、Beibei Xiao、Donghui Li、Zhonghong Zhu、Lin Liu
DOI:10.1002/asia.201403358
日期:2015.3
A novel oxidative CS bond cleavage reaction of DMSO for dual CC and CN bond formation is described. A series of acetyl heteroarenes could be selectively converted into the corresponding β‐amino ketones, which are frequently found in biologically active compounds and pharmaceuticals. DMSO acted in this reaction not only as the solvent but also as a one‐carbon bridge.