Formation of<i>N</i>,<i>N</i>′-Disubstituted Methanediamine Derivatives from Hexamethyldisilazane and Aldehydes via Stepwise Reactions
作者:Kozaburo Nishiyama、Masaki Saito、Makoto Oba
DOI:10.1246/bcsj.61.609
日期:1988.2
The ZnCl2-catalyzed reaction of aldehydes with hexamethyldisilazane (HMDS) resulted in the formation of N,N′-disubstituted methanediamines, which were found to be formed stepwisely via 1 : 1- and 1 : 2-adducts of HMDS and aldehydes.
A catalytic amount of copper(II) trifluoromethanesulfonate (Cu(OTf)(2)) in the presence of trimethylchlorosilane (TMSCl) effectively promoted the aminomethylation of indoles bearing a variety of functional groups kith a N-sifyl-N,O-acetal in good to excellent Yields. (C) 2002 Elsevier Science Ltd. All rights reserved.
The Aminomethylation of Electron-Rich Aromatics with an <i>N</i>-Silyl-<i>N</i>,<i>O</i>-Acetal Catalyzed by a Metal Triflate-TMSCl System: Facile Synthesis of Aromatic Primary Amines, 1-Aryl-trichloroethylamines
The copper(II) triflate- and hafnium(IV) triflate-catalyzed aminomethylation of indole (2) with an N-silyl-N,O-acetal 1 containing a trichloromethyl group provides the primary amine derivative (3a) in modest yield. When 1 equiv of trimethylchlorosilane (TMSCl) was added to the reaction mixture, the reaction proceeded smoothly, and the yield of 3a was dramatically improved (>90%). The use of this catalytic
Synthesis of N-(2,2,2-trichloro-1-hydroxyethyl)aldimines and their derivatives
作者:Yu. N. Firsova、S. R. Engel、N. A. Lozinskaya、S. E. Sosonyuk、M. V. Proskurnina、N. S. Zefirov
DOI:10.1007/s11172-015-0823-8
日期:2015.1
The preparative procedure for the synthesis of N-(2,2,2-trichloro-1-hydroxyethyl)aldimines from the corresponding aldehyde, chloral, and ammonium acetate was developed. Preparative silylation and acylation of their hydroxy groups were acomplished for the first time. The possibility to use the synthesized O-trimethylsilyl and O-acetyl derivatives as the synthetic equivalents of N-nonsubstituted imines