Aromatic N-Arylations Catalyzed by Copper-Anchored Porous Zinc-Based Metal-Organic Framework under Heterogeneous Conditions
作者:Tanmoy Maity、Debraj Saha、Subratanath Koner
DOI:10.1002/cctc.201400056
日期:2014.8
A highly porous Zn‐based metal–organicframework (MOF) IRMOF‐3 was covalently decorated with pyridine‐2‐aldehyde. The free amine group of IRMOF‐3 upon condensation with pyridine‐2‐aldehyde affords a bidentate Schiff‐base moiety in the porous matrix. The Schiff base moieties are availed to anchor copper(II) ions to display the catalyst’s utility towards catalytic reactions. The catalyst was characterized
高度多孔的锌基金属-有机骨架(MOF)IRMOF-3与吡啶-2-醛共价修饰。与吡啶-2-醛缩合后,IRMOF-3的游离胺基在多孔基质中提供双齿席夫碱部分。席夫碱部分可用于锚定铜(II)离子,以显示催化剂对催化反应的效用。通过紫外/可见光和红外光谱,粉末XRD光谱,SEM能量色散X射线光谱和氮吸附测量对催化剂进行了表征。在Cs 2 CO 3存在下,在温和条件下(90°C),该催化剂在DMSO介质中催化含氮杂环与芳基溴的N-芳基化反应具有出色的催化活性。。由于MOF的孔内存在活性位点,因此多孔催化剂表现出对底物的尺寸选择性。在多达五个连续的催化循环中,锚固的配合物似乎在催化反应过程中不会被浸出或分解,这显示出优于均相催化的实际优势。
Facile One-Pot Synthesis of Monosubstituted 1-Aryl-1H-1,2,3-triazoles from Arylboronic Acids and Prop-2-ynoic Acid (=Propiolic Acid) or Calcium Acetylide (=Calcium Carbide) as Acetylene Source
作者:Qing Yang、Yubo Jiang、Chunxiang Kuang
DOI:10.1002/hlca.201100256
日期:2012.3
monosubstituted 1‐aryl‐1H‐1,2,3‐triazoles was achieved in a one‐pot reaction from arylboronic acids and prop‐2‐ynoic acid or calcium acetylide (=calcium carbide), respectively, as a source of acetylene, with yields ranging from moderate to excellent (Scheme 1, Table 2). The reaction conditions were successfully applied to arylboronic acids, including analogs with various functionalities. Unexpectedly
单取代的1-芳基-1 H 1,2,3-三唑的合成是通过一锅法反应分别由芳基硼酸和prop-2-壬酸或乙炔化钙(=碳化钙)作为来源乙炔,收率从中等到优异(方案1,表2)。反应条件已成功应用于芳基硼酸,包括具有各种功能的类似物。出乎意料的是,1,2,3-三唑部分促进了区域选择性加氢脱溴(方案2)。
Synthesis of Thermally Stable Energetic 1,2,3-Triazole Derivatives
作者:A. Sudheer Kumar、Vikas D. Ghule、S. Subrahmanyam、Akhila K. Sahoo
DOI:10.1002/chem.201203192
日期:2013.1.7
Various thermallystableenergetic polynitro‐aryl‐1,2,3‐triazoles have been synthesized through Cu‐catalyzed [3+2] cycloaddition reactions between their corresponding azides and alkynes, followed by nitration. These compounds were characterized by analytical and spectroscopic methods and the solid‐state structures of most of these compounds have been determined by using X‐ray diffraction techniques
[EN] CYCLOHEXANEDIAMINE COMPOUNDS AND METHODS FOR THEIR PREPARATION<br/>[FR] COMPOSÉS DE CYCLOHEXANEDIAMINE ET LEURS PROCÉDÉS DE PRÉPARATION
申请人:PORTOLA PHARM INC
公开号:WO2014152768A1
公开(公告)日:2014-09-25
The present invention provides processes for the preparation of cyclohexanediamine compounds of formula Ia and intermediates thereof. The compounds are useful as Syk kinase inhibitors and in various pharmaceutical compositions, and particularly useful for treating conditions mediated at least in part by Syk kinase activity.
The synthesis of 1-monosubstituted1,2,3-triazoles was achieved using azides and propiolicacid by copper-catalyzed clickcycloaddition/decarboxylation, which was easily carried out in N,N-dimethylformamide at room temperature or 60 ˚C with yields ranging from moderate to excellent. The reaction conditions were found to be successful for aryl and vinyl azide reactants, including analogues with various