and green method for the selectivesynthesis of tertiary amines has been developed that involves iridium-catalyzed alkylation of various primary amines with aromatic or aliphatic alcohols. Notably, the catalytic protocol enables this transformation in the absence of additional base and solvent. Furthermore, the alkylation of nitrobenzene with primary alcohol to tertiary amine has also been achieved by
BF<sub>3</sub>·Et<sub>2</sub>O as a metal-free catalyst for direct reductive amination of aldehydes with amines using formic acid as a reductant
作者:Zhenli Luo、Yixiao Pan、Zhen Yao、Ji Yang、Xin Zhang、Xintong Liu、Lijin Xu、Qing-Hua Fan
DOI:10.1039/d1gc01468d
日期:——
direct reductive amination of aldehydes with amines using formic acid as a reductant under the catalysis of inexpensive BF3·Et2O has been developed. A wide range of primary and secondary amines and diversely substitutedaldehydes are compatible with this transformation, allowing facile access to various secondary and tertiary amines in high yields with wide functional group tolerance. Moreover, the
A new class of hypervalentiodinereagents containing phthalimidate was synthesized, and structurally characterized by X‐ray analysis. The benziodoxole‐based reagent displays satisfactory solubility in common organic solvents and is reasonably stable in solution as well as in the solid state. The reagent was used for the oxidative amination of the C(sp3)H bond of N,N‐dimethylanilines. In addition
N-alkylation of amines by homogeneous ruthenium complexes in the presence of free diphosphines
作者:Bahareh Tamaddoni Jahromi、Ali Nemati Kharat
DOI:10.1080/00958972.2013.844340
日期:2013.10.10
Chemoselective N-alkylation of amines by ruthenium complexes in the presence of free diphosphine ligands under mild conditions is described. Octyl amine and aniline were chosen as aliphatic and aromatic amines to investigate the effect of different phosphines, reaction times, and temperature on conversion, as well as selectivity towards related secondary and tertiary amines. After optimization of the reaction
描述了在温和条件下在游离二膦配体存在下通过钌配合物对胺进行化学选择性 N-烷基化。选择辛胺和苯胺作为脂肪族和芳香族胺,以研究不同膦、反应时间和温度对转化率的影响,以及对相关仲胺和叔胺的选择性。在优化反应条件后,该催化体系用于其他胺的 N-烷基化,并显示出中等至非常好的产率。通过GC-MS监测反应产物。[Ru(NO3)2CO(PPh3)2] 具有单齿和双齿硝酸盐的晶体结构通过 X 射线晶体学分析确定。
Preparation of secondary and tertiary amines from nitroarenes and alcohols
作者:Chun-Chin Lee、Shiuh-Tzung Liu
DOI:10.1039/c1cc11609f
日期:——
Various secondaryamines were obtained selectively from the reaction of nitroarenes with primary alcohols in the presence of ruthenium(II) complexes having phosphine-amine ligands as the catalyst. Secondaryamines could be further alkylated with a primary alcohol using the same catalyst, but different conditions.