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。
Photo-induced electron-transfer reaction of aryl perfluoroalkanesulfonates with anilines
作者:Qing-Yun Chen、Zhan-Ting Li
DOI:10.1016/0022-1139(93)02901-p
日期:1994.1
Irradiation of mixtures of aryl perfluoroalkanesulfonates (RfSO3C6H4X-p, X = H, Cl and Me) (1) and aniline (2a), N,N-dimethylaniline (2b) or N,N-dimethylaniline (2c) results in the formation of 2-coupling products 3 and 4-coupling products 4. However, in the reactions of 2b and 2c, in addition to 3 and 4, arenes 5 and N-methylaniline (6a) or N-ethylaniline (6b) are also detected. The presence of p-dinitrobenzene
辐照芳基全氟链烷磺酸盐(R f SO 3 C 6 H 4 X- p,X = H,Cl和Me)(1)和苯胺(2a),N,N-二甲基苯胺(2b)或N,N-二甲基苯胺的混合物(2c)导致形成2-偶合产物3和4-偶合产物4。但是,在2b和2c的反应中,除了3和4外,还有芳烃5和N-甲基苯胺(6a)或N-乙基苯胺(6b)也被检测到。存在p -dinitrobenzene,卜吨2 NO和氢醌显著抑制反应。提出了一种光致电子转移机理。
Visible-light-mediated Gomberg-Bachmann reaction: An efficient photocatalytic approach to 2-aminobiphenyls
作者:Ritu Kapoor、Ruchi Chawla、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2019.02.022
日期:2019.3
efficient, metal-free and highly selective protocol for the synthesis of 2-aminobiphenyls via visible-light-mediated arylation of anilines using aryl diazonium salts (Gomberg-Bachmannreaction) has been reported. The reaction is an example of photoredox catalysed direct C(sp2)–H arylation of anilines using eosin Y as an organophotoredox catalyst. The presented visible-light-mediated environmentally sustainable
Phsphorus-containing catalyst composition and process for hydroformylation reaction using the same
申请人:Jeon Moon You
公开号:US20060058558A1
公开(公告)日:2006-03-16
Provided are a catalyst composition including a transition metal catalyst and a nitrogen-containing bidentate phosphorus compound and a process for hydroformylation reaction of olefins to prepare aldehydes which includes stirring the catalyst composition, an olefin compound, and a gas mixture of of carbon monoxide and hydrogen, under high temperature and pressure condition. Therefore, very high catalytic activity and high selectivity in normal-aldehyde or iso-aldehyde according to the type of a substiuent are ensured.