报道了一种简单且操作上可行的方法,用于隔离和去除通过胺与芳基氟化物之间的S N Ar反应生成的氟化物。丙酸钙可作为氢氟酸副产物的廉价且对环境无害的原地洗涤器,在标准的水后处理过程中,氢氟酸副产物可以简单地从反应混合物中沉淀出来并过滤掉。该方法已在10到100 g的操作规模上进行了测试,显示在每种情况下氟化物含量均降低> 99.5%。两种规模的氟化钙都得到了全面的回收,这证明这是一种通用,有效且健壮的氟化物提取方法,有助于防止搪玻璃反应堆腐蚀。
Copper-Catalyzed Electrophilic Amination of Organozinc Nucleophiles: Documentation of <i>O</i>-Benzoyl Hydroxylamines as Broadly Useful R<sub>2</sub>N(+) and RHN(+) Synthons
作者:Ashley M. Berman、Jeffrey S. Johnson
DOI:10.1021/jo051999h
日期:2006.1.1
isolated analytically pure after a simple extractive workup. The amination process is shown to tolerate a significant degree of steric demand. The amination of nominally unreactive Caryl−H bonds via a sequential directedorthometalation/transmetalation/catalytic amination reaction sequence is detailed. The direct Cu-catalyzed amination of Grignard reagents using cocatalysis by ZnCl2 is described.
Zeolitte K-Y is effective as a promoter in the N-alkylation of anilinederivatives in comparison with γ-alumina.
与γ-氧化铝相比,Zeolitte KY在苯胺衍生物的N-烷基化中作为促进剂有效。
Copper-Catalyzed Electrophilic Amination of Functionalized Diarylzinc Reagents
作者:Ashley M. Berman、Jeffrey S. Johnson
DOI:10.1021/jo048168g
日期:2005.1.1
The copper-catalyzed electrophilicamination of functionalized diarylzinc reagents with O-acyl hydroxylamines allows for the preparation of functionalized tertiary arylamines in high yields, and is noteworthy for the mild reaction conditions employed. The functionalized diarylzinc reagents were prepared via an iodine/magnesium exchange of the corresponding aryl iodide followed by transmetalation of
A copper-catalyzedelectrophilicamination of aryl[(2-hydroxymethyl)phenyl]dimethylsilanes with O-acylated hydroxylamines has been developed to afford the corresponding anilines in good yields. The catalytic reaction proceeds very smoothly under mild conditions and tolerates a wide range of functional groups.
Ruthenium-Catalyzed Tertiary Amine Formation from Nitroarenes and Alcohols
作者:Chao Feng、Yong Liu、Shengming Peng、Qi Shuai、Guojun Deng、Chao-Jun Li
DOI:10.1021/ol1020527
日期:2010.11.5
A highly selective ruthenium-catalyzed C-N bond formation was developed by using the hydrogen-borrowing strategy. Various tertiary amines were obtained efficiently from nitroarenes and primary alcohols. The reaction tolerates a wide range of functionalities. A tentative mechanism was proposed for this direct amination reaction of alcohols with nitroarenes.