1361098-19-2Relevant academic research and scientific papers
Iminium Ion and N-Hydroxyimide as the Surrogate Components in DEAD-Promoted Oxidative Ugi Variant
Wang, Jiankun,Sun, Yilin,Jiang, Mu-Han,Hu, Tian-Yu,Zhao, Yong-Jie,Li, Xin,Wang, Guangji,Hao, Kun,Zhen, Le
, p. 13121 - 13131 (2018)
A practical metal-free oxidative Ugi-type three-component assembly has been achieved efficiently, employing a tertiary-amine-derived iminium ion as an imine surrogate, N-hydroxyimide as an acid surrogate, and DEAD as an oxidant. This dual-surrogate Ugi variant proceeded with a broad substrate scope and desired functional group tolerance, leading to a wide range of N-alkyl-N-acyl aminophthalimide and N-alkyl-N-acylaminosuccinimide derivatives in good isolated yields.
DEAD-Promoted Oxidative Ugi-Type Reaction Including an Unprecedented Ugi Amidation Assisted by Dicarboxylic Acids
Wang, Jiankun,Sun, Yilin,Wang, Guangji,Zhen, Le
, p. 6338 - 6348 (2017/11/21)
A mild and metal-free DEAD-promoted (DEAD = diethyl azodicarboxylate) oxidative Ugi-type reaction of tertiary amines has been demonstrated. The reaction gives easy access to α-amino amides and imides with diverse functional groups in good isolated yields. This Ugi-type approach achieves an unprecedented synthesis of α-amino amide analogues with the assistance of dicarboxylic acids, and not water, for the introduction of the carbonyl oxygen atom of the amide moiety. Mechanistic studies indicated that the dicarboxylic acids may readily undergo an intramolecular annulation, instead of the Mumm rearrangement, to give the desired amide with one molecule of anhydride released.
A comparative mechanistic study of Cu-catalyzed oxidative coupling reactions with N-phenyltetrahydroisoquinoline
Boess, Esther,Schmitz, Corinna,Klussmann, Martin
supporting information; experimental part, p. 5317 - 5325 (2012/05/05)
A comparative mechanistic study of Cu-catalyzed oxidative coupling reactions of N-phenyltetrahydroisoquinoline with different nucleophiles was conducted. Two previously reported combinations of catalyst and oxidant were studied, CuCl22H2/
