酰胺加氢成胺是重要的反应,但是需要高温和H 2压力是一个问题。在温和的反应条件下(低于30 bar H 2和70°C)有效的催化剂尚未见报道。在此,通过使用Pt-V双金属催化剂首次实现了酰胺的温和氢化。酰胺氢化,在70°C下1 bar H 2或5 bar H 2下使用双金属催化剂达到室温。温和的反应条件能够在抑制芳烃氢化的同时,将各种酰胺高度选择性地氢化为相应的胺。催化剂表征表明,双金属催化剂催化活性的起源是亲氧性的V-修饰的Pt纳米颗粒,其直径为2 nm。
Al2O3-supported Pd nanoclusters with an average particle size of 1.8 nm act as a reusable catalyst for the selective cross-coupling of amines. The reaction is a structure-sensitive reaction, demanding coordinatively unsaturated Pd atoms on a metallic nanocluster. The support also affects the activity, an amphoteric oxide (Al2O3) is most effective.
Alkylation of amines using trivalent bismuth derivatives
作者:Derek H.R. Barton、Nubar Ozbalik、Manian Ramesh
DOI:10.1016/s0040-4039(00)82466-1
日期:1988.1
Mixed alkylaryl BiIII derivatives have been prepared by both anionic and free radical methods. The thermal stability of these compounds permits them to be used in the presence of cupric acetate for the alkylation of amines. Trialkylbismuth compounds can also be used in the same way.
B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-catalyzed tandem protonation/deuteration and reduction of <i>in situ</i>-formed enamines
作者:Rongpei Wu、Ke Gao
DOI:10.1039/d1ob00316j
日期:——
protonation/deuteration and reduction of in situ-formed enamines in the presence of water and pinacolborane was developed. Regioselective β-deuteration of tertiary amines was achieved with high chemo- and regioselectivity. D2O was used as a readily available and cheap source of deuterium. Mechanisticstudies indicated that B(C6F5)3 could activate water to promote the protonation and reduction of enamines.
开发了一种高效的B(C 6 F 5)3催化串联质子化/氘代和在水和频哪醇硼烷存在下还原原位形成的烯胺的方法。叔胺的区域选择性β-氘化具有高的化学和区域选择性。D 2 O被用作一种容易获得且廉价的氘源。机理研究表明,B(C 6 F 5)3可以活化水以促进烯胺的质子化和还原。
SUBSTITUTED BENZAMIDES AND THEIR USES
申请人:The Board of Trustees of the Leland Stanford Junior University
公开号:US20150329503A1
公开(公告)日:2015-11-19
Provided herein are Substituted Benzamides, compositions, and method of their manufacture and use.
本文提供了取代苯甲酰胺、其组合物的制备方法和使用方法。
Development of a General Non-Noble Metal Catalyst for the Benign Amination of Alcohols with Amines and Ammonia
作者:Xinjiang Cui、Xingchao Dai、Youquan Deng、Feng Shi
DOI:10.1002/chem.201203417
日期:2013.3.11
The N‐alkylation of amines or ammonia with alcohols is a valuable route for the synthesis of N‐alkyl amines. However, as a potentially clean and economic choice for N‐alkyl amine synthesis, non‐noble metal catalysts with high activity and good selectivity are rarely reported. Normally, they are severely limited due to low activity and poor generality. Herein, a simple NiCuFeOx catalyst was designed