Glycerol as a Building Block for Prochiral Aminoketone,<i>N</i>-Formamide, and<i>N</i>-Methyl Amine Synthesis
作者:Xingchao Dai、Jabor Rabeah、Hangkong Yuan、Angelika Brückner、Xinjiang Cui、Feng Shi
DOI:10.1002/cssc.201600972
日期:2016.11.23
Prochiral aminoketones are key intermediates for the synthesis of optically active amino alcohols, and glycerol is one of the main biomass‐based alcohols available in industry. In this work, glycerol was catalytically activated and purposefully converted with amines to generate highly valuable prochiral aminoketones, as well as N‐formamides and N‐methyl amines, over CuNiAlOx catalyst. The catalyst structure
Provided is a method for preparing a structure directing agent (SDA) for crystalline molecular sieve synthesis comprising the steps of (a) hydrolyzing analkyl sulfate counterion of a quaternary ammonium salt to produce an organic ammonium salt having a hydrogen sulfate counterion; and (b) contacting the organic ammonium salt having the hydrogen sulfate counterion with a source of hydroxide in solution to form an organic ammonium salt having a hydroxide counterion; wherein the organic ammonium salt is a structure directing agent (SDA) for crystalline molecular sieve synthesis.
N-Methylation of amine and nitro compounds with CO<sub>2</sub>/H<sub>2</sub>catalyzed by Pd/CuZrO<sub>x</sub>under mild reaction conditions
作者:Xinjiang Cui、Yan Zhang、Youquan Deng、Feng Shi
DOI:10.1039/c4cc05119j
日期:——
An active Pd/ZrCuOx catalyst was prepared for the reductive amination of CO2. The N-methylation of amines and nitro compounds with CO2/H2 can be realized with up to 97% yield under relatively mild reaction conditions. N-Formylation becomes the main reaction if the reaction was performed under milder conditions or using Pd/ZnZrOx as the catalyst.
Selective synthesis of formamides, 1,2-bis(N-heterocyclic)ethanes and methylamines from cyclic amines and CO<sub>2</sub>/H<sub>2</sub> catalyzed by an ionic liquid–Pd/C system
作者:Ruipeng Li、Yanfei Zhao、Huan Wang、Junfeng Xiang、Yunyan Wu、Bo Yu、Buxing Han、Zhimin Liu
DOI:10.1039/c9sc03242h
日期:——
N-methylated compounds over different catalysts. Herein, we report the selective synthesis of formamides, 1,2-bis(N-heterocyclic)ethanes, and methylamines, which is achieved over an ionicliquid (IL, e.g., 1-butyl-3-methylimidazoliumtetrafluoroborate, [BMIm][BF4])-Pd/C catalytic system. By simply varying the reaction temperature, formamides and methylamines can be selectively produced, respectively
[EN] CXCR3 RECEPTOR AGONISTS<br/>[FR] AGONISTES DU RÉCEPTEUR CXCR3
申请人:CELGENE INT II SARL
公开号:WO2018045246A1
公开(公告)日:2018-03-08
Compounds are provided having the structure of the following Formula I: where R, R1, R2, R3a and R3b are as defined herein. Pharmaceutical compositions comprising such compounds, as well as methods related to their manufacture and use, are also provided.