Direct Synthesis of α-Amino Amides from N-Alkyl Amines by the Copper-Catalyzed Oxidative Ugi-Type Reaction
作者:Chunsong Xie、Jinhua Liu、Xin Ye、Rui Huang
DOI:10.1055/s-0031-1290319
日期:2012.2
α-Amino amides can be accessed directly form N-alkyl amines by the isocyanide-compatible oxidative copper-peroxide conditions even in the presence of water. Various functional groups are tolerated in the reaction, leading to the synthesis of various α-amino amides in moderate yield. A plausible mechanism is proposed in which an oxidative Ugi-type three-component pathway is supposed to be involved.
Development of aqueous oxidative Ugi-type reactions by copper-catalyzed surfactant-promoted C(sp3)–H direct functionalization in water
作者:Chunsong Xie、Laihong Han
DOI:10.1016/j.tetlet.2013.11.006
日期:2014.1
Direct assembly of a-amino amides from N-alkyl amines and isocyanides through oxidative Ugi-type reactions in aqueous conditions, has been achieved in a Cu(I)-TBHP-surfactant catalysis system. Various N-alkyl amines and isocyanides could be tolerated in this reaction and furnish a-amino amides in moderate yields. (C) 2013 Elsevier Ltd. All rights reserved.
Metal-Free Iodine/TEMPO-Mediated Aerobic Oxidative Ugi-Type Multicomponent Reactions with Tertiary Amines
作者:Dengke Li、Xianfu Shen、Jian Lei
DOI:10.1021/acs.joc.9b03168
日期:2020.2.21
A novel aerobic oxidative Ugi-type multicomponent reaction (MCR) with tertiaryamines was developed. The reaction was initiated by C(sp3)-H oxidation of the amine, followed by nucleophilic attack on the highly reactive isocyanide, generating nitrilium ion intermediates. If these intermediates were trapped by water in the system, α-amido amines could be delivered as the Ugi-3CR products. If exogenous