nBu4NI-Catalyzed oxidative imidation of ketones and imides for the synthesis of alpha-amino ketones were realized for the first time. The methodology is characterized by its wide substrate scope even for acetone with readily available phthalimide, saccharin and succinimide, which opens a new pathway for direct imidation of ketones.
Saccharin-Based μ-Oxo Imidoiodane: A Readily Available and Highly Reactive Reagent for Electrophilic Amination
作者:Akira Yoshimura、Steven R. Koski、Jonathan M. Fuchs、Akio Saito、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1002/chem.201500335
日期:2015.3.27
hypervalent iodine compounds were prepared by the reaction of saccharine with (diacetoxyiodo)arenes or acetoxybenziodoxole. Structures of these new imidoiodanes were established by X‐ray crystallography. The saccharin‐based μ‐oxo‐bridged imidoiodanereadily reacts with silyl enol ethers under mild conditions to give the corresponding α‐aminated carbonyl compounds in moderate yields.
method for the synthesis of 2‐amino and β‐amino five‐membered heterocyclic derivatives that are closely related to a variety of biologically active natural products is described. Regioselectivity was achieved through a metalcatalytic or organocatalyticapproach. Preliminary studies on the reaction mechanism suggest a radical imidation pathway; however, further studies are needed to verify the mechanism