Selective catalytic Hofmann N-alkylation of poor nucleophilic amines and amides with catalytic amounts of alkyl halides
作者:Qing Xu、Huamei Xie、Er-Lei Zhang、Xiantao Ma、Jianhui Chen、Xiao-Chun Yu、Huan Li
DOI:10.1039/c6gc00938g
日期:——
A selective Hofmann N-alkylation reaction of amines/amides catalytic in alkylhalides is achieved by using alcohols as the alkylating reagents, affording mono- or di-alkylated amines/amides in high selectivities.
Expeditious synthesis of multisubstituted indoles <i>via</i> multiple hydrogen transfers
作者:Taira Yoshida、Keiji Mori
DOI:10.1039/c8cc07009a
日期:——
types of hydrogen transfer processes ([1,5]-hydride shift, proton transfer, and [1,2]-hydride shift) occurred to give various 3-alkoxycarbonylindoles. Further study revealed that a [1,2]-alkyl shift instead of a [1,2]-hydride shift proceeded to afford 3-alkylindoles from the substrates with an amino group having tertiary carbons adjacent to a nitrogenatom.
N-Alkylation of Aniline and Its Derivatives by Alcohols in the Presence of Copper Compounds
作者:A. R. Bayguzina、Ch. F. Musina、R. I. Khusnutdinov
DOI:10.1134/s1070428018110052
日期:2018.11
N-Alkyl- and N,N-dialkyl-substituted anilines were obtained in the reaction of aniline and itsderivatives with primary and secondary alcohols in the presence of catalysts CuCl2·2H2O, CuBr2 and halomethanes as promoters.
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。
1,2-Aminohalogenation of arynes with amines and organohalides
作者:Sheng-Jun Li、Lu Han、Shi-Kai Tian
DOI:10.1039/c9cc05505c
日期:——
An unprecedented three-component reaction of amines, arynes, and organohalides provides convenient access to structurally diverse tertiary 2-haloanilines.