first cobalt‐catalyzed hydrogenative N‐methylation and alkylation of amines with readily available carboxylic acid feedstocks as alkylating agents and H2 as ideal reductant is described. Combination of tailor‐made triphos ligands with cobalt(II) tetrafluoroborate significantly improved the efficiency, thus promoting the reaction under milder conditions. This novel protocol allows for a broad substrate scope
Reductive and Catalytic Monoalkylation of Primary Amines Using Nitriles as an Alkylating Reagent
作者:Hironao Sajiki、Takashi Ikawa、Kosaku Hirota
DOI:10.1021/ol047871o
日期:2004.12.1
and catalytic mono-N-alkylation method of both aromatic and aliphatic amines using nitriles as an alkylating agent with Pd/C or Rh/C as a catalyst is described. This method is particularly attractive to provide an environmentally benign and applicable alkylation method of amines without using toxic and corrosive alkylating agents such as alkyl halides and carbonyl compounds.
Catalytic N-Alkylation of Amines Using Carboxylic Acids and Molecular Hydrogen
作者:Iván Sorribes、Jose R. Cabrero-Antonino、Cristian Vicent、Kathrin Junge、Matthias Beller
DOI:10.1021/jacs.5b07994
日期:2015.10.28
green N-alkylation of amines has been accomplished by applying readily available carboxylic acids in the presence of molecular hydrogen. Applying an in situ formed ruthenium/triphos complex and an organic acid as cocatalyst, a broad range of alkylated secondary and tertiary amines are obtained in good to excellent yields. This novel method is also successfully applied for the synthesis of unsymmetrically
通过在分子氢存在下应用容易获得的羧酸,已经实现了胺的方便、实用和绿色的 N-烷基化。应用原位形成的钌/三磷配合物和有机酸作为助催化剂,可以以良好到极好的收率获得范围广泛的烷基化仲胺和叔胺。这种新方法还成功地应用于通过相应胺、羧酸和作为 C1 源的 CO2 的直接三组分偶联反应合成不对称取代的 N-甲基/烷基苯胺。
This invention provides a compound of formulae (I) or (II) having the structure or a pharmaceutically acceptable salt thereof which are useful for the treatment of the inflammatory component of diseases and are particularly useful in treating atherosclerosis, myocardial infarction, congestive heart failure, inflammatory bowel disease, arthritis, type II diabetes, and autoimmune diseases such as multiple sclerosis and rheumatiod arthritis.
Nickel-Catalyzed Amination of Aryl Chlorides with Ammonia or Ammonium Salts
作者:Rebecca A. Green、John F. Hartwig
DOI:10.1002/anie.201500404
日期:2015.3.16
The nickel‐catalyzed amination of aryl chlorides to form primary arylamines occurs with ammonia or ammonium sulfate and a well‐defined single‐component nickel(0) precatalyst containing a Josiphos ligand and an η2‐bound benzonitrile ligand. This system also catalyzes the coupling of aryl chlorides with gaseous amines in the form of their hydrochloride salts.