Iron-Catalyzed Oxidative Amidation of Tertiary Amines with Aldehydes
作者:Yuanming Li、Fan Jia、Zhiping Li
DOI:10.1002/chem.201203824
日期:2013.1.2
A new oxidative coupling protocol for amide bond formation has been developed (see scheme). The method provides an efficient and practical route for the synthesis of tertiary amides from readily available tertiary amines and aldehydes in the presence of a simple FeCl2 catalyst. Mechanistic studies indicated that a peroxide and an iminium ion act as the reactive intermediates in this oxidative amidation
An unprecedented N-demethylation of N-methyl amides has been developed by use of N-fluorobenzenesulfonimide as an oxidant with the aid of a copper catalyst. The conversion of amides to carbinolamines involves successive single-electron transfer, hydrogen-atom transfer, and hydrolysis, and is accompanied by formation of N-(phenylsulfonyl)benzenesulfonamide. Carbinolamines spontaneously decompose to
One-step conversion to tertiary amines: InBr3/Et3SiH-mediated reductive deoxygenation of tertiary amides
作者:Norio Sakai、Kohji Fujii、Takeo Konakahara
DOI:10.1016/j.tetlet.2008.09.086
日期:2008.11
We have developed a simple and practical procedure for a direct reductiveconversion from a variety of tertiaryamides to the correspondingtertiaryamines using an InBr3/Et3SiH reducing system. This reducing system can be applied to the reduction of a secondary amide and provides a more efficient alternative to conventional methods that use aluminum and boron hydrides.
我们开发了一种简单实用的程序,可使用InBr 3 / Et 3 SiH还原系统将多种叔酰胺直接还原为相应的叔胺。该还原系统可用于还原仲酰胺,并为使用氢化铝和氢化硼的常规方法提供了更有效的替代方法。
Tandem radical translocation and homolytic aromatic substitution: a convenient and efficient route to oxindoles
作者:Athelstan L. J. Beckwith、John M. D. Storey
DOI:10.1039/c39950000977
日期:——
Suitable o-bromo-N-methylanilides are efficiently converted into oxindoles by treatment with tributylstannane at 160 °C tanden translocation of the initially formed aryl radical and intramolecular homolytic substitution.
在 160 °C 温度下用三丁基锡烷处理最初形成的芳基并进行分子内均聚取代,可将合适的邻溴-N-甲基苯胺有效地转化为羰基吲哚。