performed in toluene, the catalytic study of complexes 2a‐d has carried out no additional solvent and alcohol acted both as solvent and reactant of alkylating by using a little excess of alcohols. Surprisingly, conversion and selectivity of amine product for alkylation reaction have been seen high in medium solvent‐free relative to in toluene.
在本文中,已经研究了胺与醇衍生物的直接N烷基化反应。为此,已经合成了带有N配位苯并咪唑配合物的新系列钌(II)配合物,并通过元素分析,FT-IR,1 H NMR和13 C NMR光谱进行了全面表征。此外,配合物2b和2c的结构已通过X射线晶体学确认。尽管N-烷基化反应通常在甲苯中进行,但配合物2a-d的催化研究没有使用额外的溶剂,并且通过使用少量过量的醇,醇既充当溶剂又充当烷基化反应物。令人惊讶的是,与甲苯相比,在无溶剂的中等溶剂中胺产物的烷基化反应转化率和选择性高。
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作者:I. Iovel、L. Golomba、J. Popelis、E. Lukevics
DOI:10.1023/a:1014899124792
日期:——
Triflic Imide Catalyzed [3+2] Cycloaddition of Aldimines with α,α-Dimethylallylsilane
Tf2NH-catalyzed [3+2] cycloaddition of N-aryl imines with alpha,alpha-dimethylallylsilane to give substituted pyrrolidines is described. We have found the mode of cycloaddition. depends upon alpha-substituents of allylsilanes.
Conversion of aldimines to secondary amines using iron-catalysed hydrosilylation
作者:Anu Saini、Cecilia R. Smith、Francis S. Wekesa、Amanda K. Helms、Michael Findlater
DOI:10.1039/c8ob01262h
日期:——
hydrosilylation of imines to amines using a well-defined iron complex is reported. This method employs relatively mild conditions, by reaction of imine, (EtO)3SiH in a 1 : 2 ratio in the presence of 1 mol% precatalyst ([BIAN]Fe(η6-toluene), 3, BIAN = bis(2,6-diisopropylaniline)acenaphthene) at 70 °C. A broad scope of imines was readily converted into the corresponding secondary amines without the need for