Chiral Cadmium(II) Metal–Organic Framework from an Achiral Ligand by Spontaneous Resolution: An Efficient Heterogeneous Catalyst for the Strecker Reaction of Ketones
作者:Ashish Verma、Kapil Tomar、Parimal K. Bharadwaj
DOI:10.1021/acs.inorgchem.7b01915
日期:2017.11.20
A thermally stable cadmium-based chiral metal–organic framework (MOF), [Cd2(L)(H2O)(DMF)]·3DMF·2H2O}n (1; DMF = N,N-dimethylformamide), has been synthesized from an achiral ligand by spontaneous resolution. The MOF features 1D open channels with a large density of active metal sites and has a 3,6-c binodal net with a rare sit 3,6-conn topology. The metal-bound water and DMF solvents could be easily
Nanosized Bispyrazole-Based Cryptand-Stabilized Palladium(0) Nanoparticles: A Reusable Heterogeneous Catalyst for the Suzuki–Miyaura Coupling Reaction in Water
作者:Ashish Verma、Kapil Tomar、Parimal K. Bharadwaj
DOI:10.1021/acs.inorgchem.8b03015
日期:2019.1.22
controlled synthesis and stabilization of ultrafine palladium nanoparticles (Pd NPs) of nearly ∼2 nm size. The as-synthesized Pd NPs were characterized by X-ray photoelectron spectroscopy, transmission electron microscopy, and powder X-ray diffraction. The well-dispersed cryptand-stabilized nanoparticles are found to catalyze the C–C bond-forming Suzuki–Miyaura reaction heterogeneously using water as a green
A Cu(<scp>ii</scp>) metal–organic framework with significant H<sub>2</sub> and CO<sub>2</sub> storage capacity and heterogeneous catalysis for the aerobic oxidative amination of C(sp<sup>3</sup>)–H bonds and Biginelli reactions
作者:Anoop K. Gupta、Dinesh De、Kapil Tomar、Parimal K. Bharadwaj
DOI:10.1039/c7dt04006g
日期:——
1′ exhibits excellent catalytic activity for the condensation–cyclization reaction between 2-benzoyl pyridine and different benzylamines via oxidativeamination of the C(sp3)–Hbond to form 1,3-diarylated imidazo[1,5-a]pyridines under mild aerobicconditions. In addition to this, 1′ shows excellent heterogeneous catalytic activity in Biginelli reactions. The solid catalyst could be recycled several
Enhancement of H<sub>2</sub>Adsorption in Coordination Framework Materials by Use of Ligand Curvature
作者:Sihai Yang、Xiang Lin、Anne Dailly、Alexander J. Blake、Peter Hubberstey、Neil R. Champness、Martin Schröder
DOI:10.1002/chem.200802292
日期:2009.5.4
Curvy ligands for H2 storage? Enhancement of H2adsorption has been observed in coordination framework materials, an example of which is depicted, by the introduction of phenanthrene and 9,10‐dihydrophenanthrene groups into porous CuII–carboxylate framework materials of NbO topology.
H 2 储存的弯曲配体?在配位骨架材料中观察到了H 2吸附的增强,通过将菲和9,10-二氢菲基团引入NbO拓扑结构的多孔Cu II-羧酸酯骨架材料中,可以描述一个例子。
The Origin of Catalytic Benzylic C−H Oxidation over a Redox‐Active Metal–Organic Framework
作者:Louis Kimberley、Alena M. Sheveleva、Jiangnan Li、Joseph H. Carter、Xinchen Kang、Gemma L. Smith、Xue Han、Sarah J. Day、Chiu C. Tang、Floriana Tuna、Eric J. L. McInnes、Sihai Yang、Martin Schröder
DOI:10.1002/anie.202102313
日期:2021.7.5
Selective oxidation of benzylic C−H compounds to ketones is important for the production of a wide range of fine chemicals, and is often achieved using toxic or precious metal catalysts. Herein, we report the efficientoxidation of benzylic C−H groups in a broad range of substrates under mild conditions over a robust metal–organic framework material, MFM-170, incorporating redox-active [Cu2II(O2CR)4]
苄基 C−H 化合物选择性氧化为酮对于多种精细化学品的生产非常重要,并且通常使用有毒或贵金属催化剂来实现。在此,我们报道了在温和条件下,在坚固的金属有机骨架材料 MFM-170 上,结合了氧化还原活性 [Cu 2 II (O 2 CR) 4 ] 的多种底物中的苄基 C−H 基团的有效氧化明轮节点。采用电子顺磁共振 (EPR) 光谱和同步加速器 X 射线衍射的综合研究确定了桨轮部分在通过部分还原为 [Cu II Cu(O 2 CR) 来激活氧化剂t BuOOH(叔丁基过氧化氢)中的关键作用。 ) 4 ]种。