Indium−Copper-Mediated Barbier−Grignard-Type Alkylation Reaction of Imines in Aqueous Media
作者:Zhi-Liang Shen、Teck-Peng Loh
DOI:10.1021/ol702263b
日期:2007.12.1
developed for Barbier-Grignard-typealkylationreactions of simple imines, using a one-pot condensation of various aldehydes, amines (including aliphatic and chiral version), and alkyl iodides in water or aqueousmedia. The reactions proceeded efficiently at room temperature to give the desired products in moderate to good yields. Good diastereoselectivities were obtained when using L-valine methyl
开发了一种有效的In / CuI / InCl3系统,用于在水或水性介质中一锅缩合各种醛,胺(包括脂肪族和手性版本)和烷基碘的简单亚胺的Barbier-Grignard型烷基化反应。反应在室温下有效地进行,以中等至良好的产率得到所需的产物。当使用L-缬氨酸甲酯作为底物时,获得了良好的非对映选择性。
Indium–Silver- and Zinc–Silver-Mediated Barbier–Grignard-Type Alkylation Reactions of Imines by Using Unactivated Alkyl Halides in Aqueous Media
作者:Zhi-Liang Shen、Hao-Lun Cheong、Teck-Peng Loh
DOI:10.1002/chem.200701468
日期:2008.2.18
efficient and practical method for the Barbier-Grignard-typealkylationreactions of simple imines by using a one-pot condensation of various aldehydes, amines (including the aliphatic and chiral version), and secondary alkyl iodides has been developed. The reaction proceeded more efficiently in water than in organic solvents. Without the use of CuI, it mainly gave the imine self-reductive coupling product
Mild, Redox-Neutral Alkylation of Imines Enabled by an Organic Photocatalyst
作者:Niki R. Patel、Christopher B. Kelly、Allison P. Siegenfeld、Gary A. Molander
DOI:10.1021/acscatal.6b03665
日期:2017.3.3
operationally simple, mild, redox-neutral method for the photoredox alkylation of imines is reported. Utilizing an inexpensive organic photoredox catalyst, alkyl radicals are readily generated from the single-electron oxidation of ammonium alkyl bis(catecholato)silicates and are subsequently engaged in a C–C bond-forming reaction with imines. The process is highly selective, metal-free, and does not require
Efficient one-pot alkylation of imines using nanosilver iodide in aqueous media
作者:JAVAD SAFAEI GHOMI、AHMAD KAKAVAND-QALENOEI、MOHAMMAD ALI GHASEMZADEH、MASOUD SALAVATI-NIASARI
DOI:10.3906/kim-1201-40
日期:——
An efficient ecofriendly method for the alkylation reaction of various imines is described by a simple one-pot reaction of aldehydes, amines and alkyl iodides in the presence of AgI nanoparticles in aqueous media. Silver iodide nanoparticles mediated an enhanced rate and facility of reaction and showed high influence in the green synthesis of some amine derivatives. Moreover, this nanoparticle increased the yields of products and decreased the reaction times in all cases. The heterogeneous mediator was fully characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and FT-IR experimental techniques.
transformations. We describe the development of excited-state palladium-catalyzed reductive alkylation of imines with alkyl bromides. The new methodology shows broad functional group tolerance and can additionally be applied in the direct three-component reaction of aldehydes, anilines, and alkyl bromides to give the alkyl amines under mild reaction conditions. Time-resolved photoluminescence experiments