Aerobic oxidative coupling of alcohols and amines towards imine formation by a dicopper(I,I) catalyst
作者:Indranil Dutta、Subhabrata De、Sudhir Yadav、Ranajit Mondol、Jitendra K. Bera
DOI:10.1016/j.jorganchem.2017.05.009
日期:2017.11
A dicopper(I,I) complex [Cu2(L1) (Cl)2] (1), bearing a Cu2Cl2 core spanned by a naphthyridine–diimine ligand is synthesized by the treatment of CuCl with 2,7–bis(N–mesitylmethylimino)–1,8–naphthyridine (L1). The catalytic efficacy of 1 is assessed for aerobic oxidative synthesis of imines from alcohols and amines. The title complex is found to be an excellent catalyst for a wide variety of alcohols
Base-Free Oxidative Coupling of Amines and Aliphatic Alcohols to Imines over Au–Pd/ZrO2 Catalyst under Mild Conditions
作者:Wenjing Cui、Jiang Wang、Sagala、Meilin Jia
DOI:10.1134/s0036024421050307
日期:2021.5
synthesis of imines from amines and aliphatic alcohols over Au–Pd alloy catalystsunder ambient conditions was developed. A series of Au–Pd/ZrO2 bimetallic catalysts with varying metal loadings and Au : Pd molar ratios were prepared and their catalytic performance was investigated. The 3.0 wt % Au–Pd/ZrO2 alloy catalyst with Au : Pd molar ratio of 1 : 1 showed the best catalytic performance. Under air atmosphere
Sulfated polyborate: A dual catalyst for the reductive amination of aldehydes and ketones by NaBH4
作者:Prerna Ganwir、Ganesh Chaturbhuj
DOI:10.1016/j.tetlet.2021.153143
日期:2021.6
An efficient, quick, and environment-friendly one-pot reductiveamination of aldehydes or ketones was developed. In ethanol at 70 °C, a imination catalyzed by sulfated polyborate and further reduced by sodium borohydride yields various amines. The present method has many significant benefits, including a shorter reaction time, excellent yields, and a hassle-free, straightforward experimental process
开发了一种高效、快速、环保的醛或酮的单锅还原胺化反应。在 70 °C 的乙醇中,由硫酸化多硼酸盐催化并由硼氢化钠进一步还原生成各种胺。本方法具有许多显着的好处,包括更短的反应时间、优异的产率和轻松、直接的实验过程。由于其灵活性,该反应具有广泛的应用,包括用于还原胺化的仲胺。
Tris(pentafluorophenyl)boron as an Efficient, Air Stable, and Water Tolerant Lewis Acid Catalyst
and Michael reactions of silyl enol ethers with carbonyl compounds or other electrophiles (trimethyl orthoformate, dimethyl acetal, and chloromethyl methyl ether), the allylation reaction of allylsilanes with aldehydes, and the Diels–Alder reaction of dienes with α,β-unsaturated aldehydes. A solution of formaldehyde in water is applicable as an electrophile. Also, the aldol-type reaction of ketene silyl
The direct catalytic oxidative coupling of amines is one of the attracting methods for the synthesis of a variety of pharmaceutical or industrial needed imines. Numerous earth-abundant manganese based salts, oxides, and complexes have been applied in this reaction. However, these compounds suffered from difficult separation, large catalyst loading, complicated reactivation or indeterminate activity