A silver triflate-catalyzed cascade of in situ-oxidation and allylation of arylbenzylamines
摘要:
A silver-triflate catalyzed cascade of in situ-oxidation and allylation of arylbenzylamines is reported. The 2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate is employed as a mild oxidant which is compatible with both catalyst and ligand. Racemic BINAP is also utilized to assist with the catalyst in regulating the yields of products. Various homoallylic amines are obtained in 39-99% yields. (C) 2016 Elsevier Ltd. All rights reserved.
Synthetic and Mechanistic Studies of Indium-Mediated Allylation of Imines in Ionic Liquids
作者:Man Chun Law、Tin Wai Cheung、Kwok-Yin Wong、Tak Hang Chan
DOI:10.1021/jo062198x
日期:2007.2.1
Aldimines derivedfrom aryl and non-enolizable aliphatic aldehydes were allylated with allyl bromide mediated by indium powder in [bpy][BF4] (bpy = N-butylpyridine) to give good yields of the corresponding homoallylic amines. Selective formation of monoallylated amines can be achieved by varying the amount of bromide ion additive in the form of [bpy][Br]. The transient organoindium intermediates, allylindium(I)
Synthesis of polystyrene-bound perfluoroalkyl sulfonic acids and the application of their ytterbium salts in multicomponent reactions (MCRs)
作者:Yueyan Yin、Gang Zhao、Gui-Long Li
DOI:10.1016/j.tet.2005.08.118
日期:2005.12
New polystyrene-bound perfluoroalkyl sulfonicacids and their ytterbium salts have been prepared. Multicomponent reactions (MCRs) for the efficient synthesis of homoallylic amines or amides catalyzed by the polystyrene-bound perfluoroalkyl sulfonic ytterbium salts are reported.
Titanocene(III) Chloride Mediated Radical Induced Allylation of Aldimines: Formal Synthesis of C-Linked 4′-Deoxy Aza-disaccharide
作者:Sumit Saha、Subhas Chandra Roy
DOI:10.1021/jo200908b
日期:2011.9.2
Titanocene(III) chloride (Cp2TiCl) mediated radical induced allylation of aldimines for the preparation of homoallyl amines is described. The radical was generated from the allylbromide using Cp2TiCl as the radical source. Formal synthesis of C(4)–C(5′)-linked 4′-deoxy aza-disaccharide is demonstrated and a study toward the bicyclic skeleton of alkaloids was also accomplished. The radical initiator
Electrochemical Allylation Reactions of Simple Imines in Aqueous Solution Mediated by Nanoscale Zinc Architectures
作者:Jing-Mei Huang、Xu-Xiao Wang、Yi Dong
DOI:10.1002/anie.201004852
日期:2011.1.24
I zinc we're alone now: The title reactions were achieved in an undivided cell fitted with a pair of zinc electrodes in aqueoussolution. A preliminary study on the relationship of reaction activity and surface morphology showed that the deposited zinc powders with nanoscale architectures had very high activity.
Novel and Efficient Method for the Allylation of Carbonyl Compounds and Imines Using Triallylaluminum
作者:Kao-Hsien Shen、Ching-Fa Yao
DOI:10.1021/jo052385f
日期:2006.5.1
triallylaluminum as a reagent for the allylation of carbonyl compounds and imines. The allylation of ketimines without additional metal catalyst is known so far only in the case of the Grignardreagent. Triallylaluminum is a useful alternative to provide the homoallylic amines in excellent yield upon addition to aldimines and ketimines. The significant reactivity of this reagent was confirmed by its