Article
Crystallography
Lixin You, Rui Tan, Xiaojuan Wang, Jianhong Hao, Shiyu Xie, Gang Xiong, Fu Ding, Andrei S. Potapov, Yaguang Sun
Summary: In this study, a new heterogeneous catalyst Pd-NHC@Eu-BCI was synthesized by incorporating N-heterocyclic carbene-palladium active sites into a 2D coordination polymer based on a 1,3-bis(carboxymethyl)imidazolium ligand. The catalyst was thoroughly characterized using various analytical techniques. The Pd-NHC@Eu-BCI catalyst exhibited excellent catalytic activity in the Suzuki-Miyaura cross-coupling reaction. It could be easily recovered from the reaction mixture and maintained its catalytic activity and structure even after five cycles.
Article
Materials Science, Paper & Wood
Arnet Maria Antony, Masira Imtiyaz Chamanmalik, Vishal Kandathil, Harini G. Sampatkumar, B. S. Sasidhar, C. V. Yelamaggad, Siddappa A. Patil
Summary: A new N-heterocyclic carbene-palladium(II) complex grafted on cellulose was synthesized as a heterogeneous catalyst. The structure, morphology, thermal stability and chemical composition of the catalyst were confirmed by various analytical techniques. The catalyst exhibited excellent catalytic ability in Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with good tolerance to various functional groups and easy recovery by filtration.
Review
Chemistry, Inorganic & Nuclear
Liza Roos, P. Malan Frederick, Marile Landman
Summary: The review provides an overview of 82 N-heterocyclic carbene metal complexes containing a naphthalimide-NHC moiety, which have diverse applications. These complexes may exhibit notable conformations in the solid state, and play important roles in catalysis and biology.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ceren Akpunar, Namik Ozdemir, Mert Olgun Karatas, Bulent Alici, Ismail Ozdemir
Summary: In this study, we synthesized five new coumarin-functionalised PEPPSI type Pd-NHC complexes to examine their catalyst properties. The complexes showed slightly distorted square-planar geometry and exhibited catalytic activity in the Suzuki-Miyaura reaction of phenylboronic acid and aryl bromide derivatives.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Mitat Akkoc, Nesrin Bugday, Serdar Altin, Sedat Yasar
Summary: The Magnetite@MCM-41@NHC@Pd catalyst was characterized and shown to have high catalytic activity in Suzuki-Miyaura reactions. It could be recovered and reused multiple times without substantial loss in performance.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Peng Lei, Yibo Wang, Caixia Zhang, Yuge Hu, Juntao Feng, Zhiqing Ma, Xili Liu, Roman Szostak, Michal Szostak
Summary: In this study, the Sonogashira cross-coupling of aryl ammonium salts was successfully catalyzed by [Pd(NHC)(3-CF3-An)Cl2]. The catalyst exhibited broad scope and excellent C-N activation selectivity. The replacement of pyridine with aniline as an ancillary ligand in the Pd(II)-NHC complex was proven to be highly effective in stabilizing the catalyst.
Article
Chemistry, Inorganic & Nuclear
Hatice Arici, Buse Sundu, Rukiye Firinci, Engin Ertugrul, Namik Ozdemir, Bekir Cetinkaya, Onder Metin, Muhammet Emin Gunay
Summary: Six new N-heterocyclic carbene (NHC) ligands with long-chain alkyl groups were successfully synthesized, and their Pd(II) complexes were utilized as stable catalysts for Suzuki-Miyaura cross-coupling reactions and in situ synthesis of NHC-stabilized Pd(0) nanoparticles. The study showed that the length of the alkyl chain on the N atom of NHC ligands significantly affects their catalytic activity and influences the particle size, morphology, and catalytic activity of in situ generated Pd(0) nanoparticles.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Mitat Akkoc, Nesrin Bugday, Serdar Altin, Ismail ozdemir, Sedat Yasar
Summary: A novel Pd-NHC functionalized magnetic Fe3O4@SBA-15@NHC-Pd catalyst was synthesized and demonstrated high efficiency in Suzuki-Miyaura C-C bond formation reactions. The catalyst was characterized using various techniques to determine its structure and content, and was found to be effective in facilitating chemical reactions in aqueous media at room temperature.
Article
Biochemistry & Molecular Biology
Wei Huang, Huixian Ye, Xiaodan Li, Yuntong Li, Junyue Lin
Summary: In this study, a polymer network containing N-heterocyclic carbene palladium (PNNHC-Pd) catalytic active sites was fabricated through an immobilization process. The N-heterocyclic carbene palladium dispersed homogeneously in the polymer network, leading to excellent catalytic activity, high stability, and superior reusability in the palladium-catalyzed Suzuki-Miyaura coupling reaction in aqueous medium. This work provides a new insight into the heterogenization of homogeneous catalysts based on polymer network.
CHEMISTRY & BIODIVERSITY
(2023)
Article
Chemistry, Physical
Arnet Maria Antony, Vishal Kandathil, Manjunatha Kempasiddaiah, B. S. Sasidhar, Shivaputra A. Patil, Siddappa A. Patil
Summary: A new h-BN@NHC-Pd heterogeneous catalyst was designed and synthesized, characterized by various techniques, and studied for its catalytic activity in Suzuki-Miyaura cross-coupling reactions. The catalyst showed excellent catalytic efficiency with easy recovery and high stability after multiple reuses. Overall, it has remarkable advantages such as simplicity of operation, high yields, short reaction times, and heterogeneity.
Article
Chemistry, Physical
Sandra Abi Fayssal, Timothee Naret, Vincent Huc, Julien Buendia, Cyril Martini, Emmanuelle Schulz
Summary: The scalable synthesis of Pd-NHC cinnamyl complexes supported on benzyloxycalix[8]arene is reported. These catalysts are highly active for Buchwald-Hartwig cross-coupling reactions, enabling the coupling of aryl chlorides and bromides with alkyl and aryl amines at low catalytic loadings. The supported complexes also produce attractive unsymmetrical triarylamines and can even facilitate the synthesis of unprecedented Pd-catalyzed C-H activation products. Through an easy to implement procedure, these characterized catalysts combine the best features of homogeneous and heterogeneous catalysis, achieving high efficiency and low Pd leaching levels.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
R. Ghavidel Kalishomi, S. Rostamizadeh
Summary: A novel Fe3O4@Si-NHC-Pd catalyst with N-heterocyclic carbenes (NHCs) as ligands has been synthesized and utilized in the Suzuki-Miyaura cross-coupling reaction of boronic acids and aryl halides in water, showing high efficiency and easy recyclability.
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Anindita Dewan, Manashi Sarmah, Prantika Bhattacharjee, Pankaj Bharali, Ashim J. Thakur, Utpal Bora
Summary: This study reports the design, synthesis, and application of naturally occurring cellulose from agro waste pomegranate peel as a novel support for active biogenic Pd nanoparticles for Suzuki-Miyaura and Sonogashira cross-coupling reactions at room temperature. The cellulose matrix enables well dispersion of Pd nanoparticles over the support to generate Pd@cellulose, exhibiting excellent catalytic activity and recyclability under ligand-free mild reaction conditions. The synthesized cellulose nanofibers and Pd-anchored heterogeneous nanofibers were characterized through various analytical techniques.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Chemistry, Physical
Jonathan De Tovar, Franck Rataboul, Laurent Djakovitch
Summary: The study on a series of palladium(II) complexes with bis(NHC) ligands immobilized on TiO2 surface reveals that these complexes evolve to Pd NPs at the TiO2 surface under reaction conditions, releasing Pd species in the liquid phase. The reactivity is enhanced by the in situ generation of Mott-Schottky heterojunctions, leading to new pathways for the design of heterogenized catalysts in reverse-flow reactors.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Organic
Vaishali Saini, Vimal Kumar Madduluri, Krishnan Pragya, Krishnan Rangan, Bharti Khungar
Summary: This study reports a palladium complex (LPdBr) bearing abnormal NHC that exhibits excellent catalytic activity in the Suzuki-Miyaura coupling reaction. The structure and abnormal coordination mode of the complex are confirmed by X-ray diffraction. The catalytic potential of LPdBr is demonstrated in the coupling of various aryl/heteroaryl chlorides with different aryl/naphthyl/phenanthryl boronic acids. The mechanism of the catalytic cycle is investigated and proposed by HRMS.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Ghazaleh Jahani, Masoume Malmir, Majid M. Heravi
Summary: A novel nitrogen- and sulfur-doped graphene carbon dot-modified magnetic nanocomposite was synthesized and characterized. The catalyst, Fe3O4/g-CSNCDs, showed excellent catalytic activity and selectivity in alcohol oxidation. The carbonation of reagents and magnetic nanoparticles were found to have an impact on the catalytic performance. The Fe3O4/g-CSNCDs catalyst not only exhibited recyclability and magnetic recovery, but also showed improved catalytic activity compared to the bare g-CSNCDs.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Heshmatollah Sepahvand, Majid M. Heravi, Mahyar Saber, Seyyed Emad Hooshmand
Summary: Enzymes play a key role in chemical industries as biological catalysts. Immobilization of enzymes using techniques like the Ugi multicomponent reaction can enhance their stability and activity, leading to a more robust catalyst system. Immobilized enzymes through Ugi MCR show good stability and activity, with the potential for synergistic effects on enzyme activities.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Majid M. Heravi, Reihaneh Malakooti, Kosar Kafshdarzadeh, Zahra Amiri, Vahideh Zadsirjan, Hassan Atashin
Summary: An eco-friendly method for the synthesis of substituted dihydropyrano[2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives has been developed through a multicomponent reaction. The method offers wide scope, high yields, short reaction times, and simple workup procedure. Furthermore, the nanocatalyst used in this method can be easily recovered and reused multiple times without significant loss in catalytic activity and performance.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Organic
Zahra Khademi, Majid M. Heravi
Summary: The Claisen condensation is a base-mediated reaction that generates alpha,beta-keto ester by reacting an ester with a molecule containing alpha-hydrogen atom. This review focuses on the applications of Claisen condensation in the total synthesis of natural products, covering relevant literature up to the beginning of 2021.
Article
Multidisciplinary Sciences
Samahe Sadjadi, Fatemeh Koohestani, Majid M. Heravi
Summary: 1-Butyl-3-vinylimidazolium chloride was synthesized and polymerized with acrylamide to form an ionic liquid-containing polymer, which was then used to create a composite with iron-based metal-organic framework. The resulting composite exhibited high catalytic activity and recyclability for ultrasonic-assisted Knoevenagel condensation.
SCIENTIFIC REPORTS
(2022)
Review
Chemistry, Multidisciplinary
Majid M. Heravi, Vahideh Zadsirjan
Summary: This review summarizes recent advances in the synthesis and aromatization of Hantzsch 1,4-dihydropyridines under microwave irradiation, highlighting the use of this green approach.
Review
Chemistry, Applied
Yalda Rangraz, Majid M. Heravi
Summary: The development of methodologies for carbon-nitrogen bond formation is crucial in organic synthesis, as the resulting products are widely used in pharmaceuticals, biologically active compounds, and natural products. Recently, nanosized metal catalysts have gained significant attention for their excellent catalytic performance, high product yields, mild reaction conditions, and environmental sustainability. This review provides an overview of the latest progress in the fabrication of nanocatalysts and their applications in constructing carbon-nitrogen bonds via cross-coupling reactions.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Leyla Mohammadkhani, Majid M. Heravi, Farhad Panahi
Summary: This paper reports the efficient conversion of nitroarenes to anilines using immobilized palladium nanoparticles on a silica-starch substrate. The catalyst system exhibited high efficiency and could be reused multiple times.
MONATSHEFTE FUR CHEMIE
(2022)
Review
Chemistry, Organic
Majid M. Heravi, Batoul Alipour, Vahideh Zadsirjan, Masoume Malmir
Summary: The Robinson annulation is a significant reaction for the synthesis of alpha,beta-unsaturated ketone ring that involves the generation of two C-C bonds. It has been frequently used in the total synthesis of biologically active natural products. These products and their derivatives play a major role in pharmacotherapy, especially for cancer and infectious diseases.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Masoume Malmir, Majid M. Heravi, Zahra Yekke-Ghasemi, Satar Saberi, Masoud Mirzaei
Summary: A new heterogeneous catalyst, TBA8[Zr(W5O18)2]middot17H2O (Zr(W5)2), was synthesized and characterized. It was found that the catalyst had a sandwich-type structure consisting of zirconium ions and mono-lacunary Lindqvist [W5O18 ]4- anions, encapsulated by TBA+ cations. This catalyst exhibited hydrophobic properties and improved catalytic efficiency by trapping reactants on its surface. Using Zr(W5)2 as a catalyst, a series of 1,5-benzodiazepines were successfully synthesized via mild and solvent-free reactions.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Applied
Masoume Malmir, Majid M. Heravi, Ghazaleh Jahani
Summary: Metal-organic frameworks (MOFs) are viable and environmentally friendly alternatives to traditional catalysts, and the magnetic Ox-CN-Cu-MOF catalyst has shown remarkable catalytic performance due to its unique structure and Lewis acidic properties. It also exhibits excellent recyclability.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Masoumeh Bagheri Bisafar, Masoume Malmir, Majid M. Heravi
Summary: In this study, a novel magnetic MOFs-based catalyst was synthesized and showed good catalytic activity and stability for the reduction of nitroarenes and organic dyes. The catalyst can be easily separated and recovered by magnetic separation, and it can be reused for multiple cycles.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Zahra Yekke-Ghasemi, Majid M. Heravi, Masoume Malmir, Masoud Mirzaei
Summary: In this study, a tri-component composite Zr/SiW12/GO was prepared using an ultrasonic-assisted method. This composite, acting as a remarkable heterogeneous catalyst, showed exceptional catalytic performance in the oxidation reaction of sulfides to sulfoxides. The composite also demonstrated exceptional stability and could be reused up to four times without significant loss in its catalytic activity.
SCIENTIFIC REPORTS
(2023)
Review
Chemistry, Multidisciplinary
Majid M. Heravi, Azadeh Nazari
Summary: Natural product synthesis is a constantly evolving field that evaluates new synthetic methods and reagents to address the complexities of structures and functions. SmI2, a widely-used reagent in chemical synthesis, has been highlighted in this review for its recent advances and strategies used in the total synthesis of natural products since 2004.
Review
Chemistry, Multidisciplinary
Majid M. Heravi, Vahideh Zadsirjan
Summary: The Hantzsch reaction is a well-known multi-component reaction for synthesizing 1,4-dihydropyridines, and microwave irradiation has been successfully utilized as a green energy source to promote this organic transformation. Literature survey shows that construction and aromatization of 1,4-DHPs can be effectively carried out under microwave irradiation in solution or dry media.
