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Pd NPs Decorated on POPs as Recyclable Catalysts for the Synthesis of 2‐Oxazolidinones from Propargylic Amines via Atmospheric Cyclizative CO2 Incorporation
ChemNanoMat ( IF 2.6 ) Pub Date : 2019-11-27 , DOI: 10.1002/cnma.201900505 Swarbhanu Ghosh 1 , Sk Riyajuddin 2 , Somnath Sarkar 1 , Kaushik Ghosh 2 , Sk. Manirul Islam 1
ChemNanoMat ( IF 2.6 ) Pub Date : 2019-11-27 , DOI: 10.1002/cnma.201900505 Swarbhanu Ghosh 1 , Sk Riyajuddin 2 , Somnath Sarkar 1 , Kaushik Ghosh 2 , Sk. Manirul Islam 1
Affiliation
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A novel approach has been taken for the synthesis of a microporous polymeric materials of BBA‐1 and BBA‐2 (benzene−benzylamine), which is a POP (porous organic polymer) with its excellent surface area determined by BET study, via Friedel‐Crafts alkylation of benzene and benzylamine (or 4‐methoxybenzylamine) by utilizing a cross‐linker (formaldehyde dimethyl acetal) and a promoter (anhydrous FeCl3). Pd NPs were decorated over BBA‐1 and modified BBA‐2 to generate the desired catalysts (Pd@BBA‐1 and Pd@BBA‐2 respectively). The characterizations of the synthesized nanomaterials have been conducted by FE‐SEM, wide‐angle powder XRDmethods, N2 adsorption/desorption studies and high resolution transmission electron microscopy (TEM). Pd NPs decorated porous polymers are described here to facilitate the carboxylative cyclization of several propargylamine derivatives leading to the corresponding desired products (2‐oxazolidinone) under the application of ambient conditions (0.1 MPa of CO2, DMSO, 40–80 °C, 30–60 mg nanocatalyst). The Pd NPs‐loaded POP is competitive with previously reported catalytic systems. These pure polymeric microporous catalytic systems exhibited outstanding catalytic performances for the generation of oxazolidinones from several propargylic amines in the absence of organic and inorganic bases through atmospheric cyclizative CO2 incorporation. The modified nanocatalyst (Pd@BBA‐2) displayed exceptional recycling efficiency for the generation of oxazolidinones up to five runs without any noticeable decay in the activity of Pd@BBA‐2.
中文翻译：
持久性有机污染物上装饰的Pd NPs作为可回收的催化剂，通过大气环化CO2的掺入从炔丙基胺合成2-恶唑烷酮
采用了一种新颖的方法来合成BBA-1和BBA-2（苯苄胺）的微孔聚合材料，这是一种POP（多孔有机聚合物），通过BET研究确定其具有出色的表面积，通过Friedel-利用交联剂（甲醛二甲基乙缩醛）和促进剂（无水FeCl 3）使苯和苄胺（或4-甲氧基苄胺）烷基化。在BBA-1和修饰的BBA-2上装饰Pd NP以生成所需的催化剂（分别为Pd @ BBA-1和Pd @ BBA-2）。合成的纳米材料的表征已通过FE-SEM，广角粉末XRD方法，N 2进行吸附/解吸研究和高分辨率透射电子显微镜（TEM）。此处描述了用Pd NPs装饰的多孔聚合物，以促进在环境条件下（0.1 MPa CO 2，DMSO，40-80°C，30的应用）下几种炔丙基胺衍生物的羧基环化，生成相应的所需产物（2-恶唑烷酮）–60 mg纳米催化剂）。负载Pd NPs的POP与以前报道的催化系统相比具有竞争力。这些纯的聚合物微孔催化体系在不存在有机碱和无机碱的情况下，通过大气环化CO 2可以从几种炔丙基胺生成恶唑烷酮，表现出出色的催化性能。成立。改性的纳米催化剂（Pd @ BBA-2）表现出优异的回收效率，最多可生成五次恶唑烷酮，而Pd @ BBA-2的活性没有任何明显的下降。
更新日期：2019-11-27
中文翻译：
持久性有机污染物上装饰的Pd NPs作为可回收的催化剂，通过大气环化CO2的掺入从炔丙基胺合成2-恶唑烷酮
采用了一种新颖的方法来合成BBA-1和BBA-2（苯苄胺）的微孔聚合材料，这是一种POP（多孔有机聚合物），通过BET研究确定其具有出色的表面积，通过Friedel-利用交联剂（甲醛二甲基乙缩醛）和促进剂（无水FeCl 3）使苯和苄胺（或4-甲氧基苄胺）烷基化。在BBA-1和修饰的BBA-2上装饰Pd NP以生成所需的催化剂（分别为Pd @ BBA-1和Pd @ BBA-2）。合成的纳米材料的表征已通过FE-SEM，广角粉末XRD方法，N 2进行吸附/解吸研究和高分辨率透射电子显微镜（TEM）。此处描述了用Pd NPs装饰的多孔聚合物，以促进在环境条件下（0.1 MPa CO 2，DMSO，40-80°C，30的应用）下几种炔丙基胺衍生物的羧基环化，生成相应的所需产物（2-恶唑烷酮）–60 mg纳米催化剂）。负载Pd NPs的POP与以前报道的催化系统相比具有竞争力。这些纯的聚合物微孔催化体系在不存在有机碱和无机碱的情况下，通过大气环化CO 2可以从几种炔丙基胺生成恶唑烷酮，表现出出色的催化性能。成立。改性的纳米催化剂（Pd @ BBA-2）表现出优异的回收效率，最多可生成五次恶唑烷酮，而Pd @ BBA-2的活性没有任何明显的下降。
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