Article
Chemistry, Applied
Vinita Yadav, Ekambaram Balaraman, Santosh B. Mhaske
Summary: This study reports an air-stable, molecularly defined NNN-Mn(II) pincer complex catalyzing acceptorless dehydrogenative coupling of alcohols with indoles, successfully synthesizing various bis(indolyl)methane derivatives and important structurally relevant products. Mechanistic studies highlight the significance of the NH moiety in the complex and the crucial role of metal-ligand cooperation during catalysis.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Qi Wang, Zhongxia Shang, Haiyan Wang, Alexander Wei
Summary: Colloidal Ag particles decorated with Fe3O4 islands can be activated as inverse catalysts for C(sp(2))-H heteroarylation either electrochemically or photochemically. The silver-iron oxide (SIO) particles are reduced into redox-active forms by cathodic charging at mild potentials or short-term light exposure, and can be reused multiple times by magnetic cycling without further activation. The reduction peak shift is attributed to the overpotential produced by surface Fe3O4, which separates residual Ag ions or clusters from bulk silver. The catalytic efficiency of SIO is maintained even with acid degradation, and can be counteracted by simple addition of water to the reaction medium.
Article
Chemistry, Multidisciplinary
Jairus L. Lamola, Paseka T. Moshapo, Cedric W. Holzapfel, Munaka Christopher Maumela
Summary: A new family of biaryl phosphacyclic ligands have been developed for efficient Suzuki-Miyaura cross-coupling of aryl bromides and chlorides, with successful coupling of sterically hindered and heterocyclic substrates at room temperature.
Review
Chemistry, Multidisciplinary
Fatemeh Mohajer, Majid M. Heravi, Vahideh Zadsirjan, Nargess Poormohammad
Summary: The Sonogashira reaction is a key cross-coupling reaction in organic synthesis, forming a C-C bond between a vinyl or aryl halide and a terminal alkyne. While traditionally requiring copper and phosphines or amines as co-catalysts and bases, recent developments have enabled the reaction to proceed without these components. This advancement could promote the principles of green chemistry and enhance the economic feasibility of the reaction.
Article
Multidisciplinary Sciences
Samuel H. Newman-Stonebraker, Sleight R. Smith, Julia E. Borowski, Ellyn Peters, Tobias Gensch, Heather C. Johnson, Matthew S. Sigman, Abigail G. Doyle
Summary: In this study, a classification workflow using monodentate phosphine ligands was developed to identify reactivity cliffs in 11 Ni- and Pd-catalyzed cross-coupling datasets. The minimum percent buried volume descriptor was found to be a physically meaningful and predictive representation of ligand structure in catalysis.
Article
Chemistry, Multidisciplinary
Jingjing Cui, Fukang Liu, Zhe Lu, Shiwei Feng, Chen Liang, Yongding Sun, Jin Cui, Biao Zhang
Summary: Photo-curing 3D printing technology has advanced manufacturing but worsened the environmental crisis. The authors developed catalyst-free dynamic thermosetting photopolymers through photopolymerization and transesterification, enabling repeatable 3D printing as a practical solution to environmental challenges.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jialei Du, Daili Xiang, Jie Chen, Hehuan Xia, Leichen Wang, Fushan Liu, Yiwei Zhao, Yuanyuan Zhang, Caixia Xu, Bin Wang
Summary: Nanoporous PdCu (NP-PdCu) is a competent self-supported heterogeneous catalyst prepared from a PdCuAl alloy precursor, suitable for Suzuki-Miyaura cross-coupling with high efficiency and yields, and can be reused multiple times without obvious loss of catalytic performance.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Seyyedeh Ameneh G. Alavi, Mohammad Ali Nasseri, Milad Kazemnejadi, Ali Allahresani, Mandi HussainZadeh
Summary: The magnetic Cu-Co bimetallic nanoparticles catalyst shows excellent performance in various cross-coupling reactions, with high efficiency and recyclability. It is characterized by its simplicity, lack of heavy metals, and environmental friendliness.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Organic
Tingting Yan, Kaki Raveendra Babu, Yong Wu, Yang Li, Yuhai Tang, Silong Xu
Summary: A phosphine-catalyzed olefinic cross-coupling reaction between benzyl halides and fumarates has been described, providing trisubstituted alkenes with good yields and excellent E-selectivity under metal-free conditions. Mechanistic studies suggest a catalytic cycle involving phosphorus ylide formation, Michael addition, water-assisted hydrogen transfer, and phosphine elimination.
Article
Chemistry, Multidisciplinary
Jiajia Li, Junmin Chen, Hefeng Zhu, Mingzhong Cai
Summary: A new mesoporous SBA-15-anchored triphenylphosphine-gold(i) complex [SBA-15-Ph(3)PauNTf(2)] was synthesized and characterized. This catalyst allowed for the photosensitizer-free cross-coupling reaction of aryldiazonium tetrafluoroborates and alkynyltrimethylsilanes under blue LED irradiation, yielding diverse arylalkynes with good yields and high functional group tolerance. The catalyst could be easily recovered and reused multiple times without significant loss in activity.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Lu Ye, Xiaojing Liu, Yangcheng Lu
Summary: In this study, a highly efficient palladium catalyst was successfully immobilized on the surfaces of magnetic nanoparticles with the coordination of N-heterocyclic carbene. The catalyst showed outstanding catalytic performance in the Suzuki-Miyaura cross-coupling reaction and good recyclability after being reused multiple times. The prepared Pd-NHC@NCPs could be conveniently separated from the reactions system with an external magnet, displaying promising potential for practical applications.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Gaspard Hedouin, Sudripet Sharma, Karanjeet Kaur, Ramesh Hiralal Choudhary, Jacek B. Jasinski, Fabrice Gallou, Sachin Handa
Summary: In this study, recyclable ligand-free iridium (Ir)-hydride based Ir-0 nanoparticles (NPs) were developed for the selective partial hydrogenation of P-V-substituted naphthalenes. Both isolated and in situ generated NPs showed catalytic activity. Metal-surface-bound hydrides were observed in the NMR study, likely formed from Ir-0 species. Hexafluoroisopropanol as a solvent was found to activate the substrate through hydrogen bonding. The highly regioselective aromatic ring reduction was demonstrated in different phosphine oxides or phosphonates using the NPs as catalysts. The study also presented a novel approach for preparing H-8-BINAP and its derivatives without losing enantioselectivity during catalytic events.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Dhanaji Jawale, Valerie Geertsen, Frederic Miserque, Patrick Berthault, Edmond Gravel, Eric Doris
Summary: Platinum nanoparticles stabilized on the surface of carbon nanotubes function as a catalyst for the hydrosilylation of alkenes and alkynes, demonstrating improved stability and recyclability under sustainable conditions.
Article
Chemistry, Physical
Kazem Karami, Sedigheh Abedanzadeh, Mahdieh Afroomand, Pablo Herves, Parvaneh Bayat
Summary: This work presents the preparation and characterization of a highly dispersed Pd catalyst derived from pincer-type orthopalladated azo-complex on titania support. The catalyst showed efficient performance in copper-free Sonogashira cross-coupling reactions with aryl iodides, bromides, and chlorides, yielding high amounts of coupling products in environmentally friendly reaction media.
Article
Chemistry, Multidisciplinary
Pavel A. Volkov, Anton A. Telezhkin, Kseniya O. Khrapova, Nina I. Ivanova, Alexander I. Albanov, Nina K. Gusarova, Boris A. Trofimov
Summary: This study demonstrates that terminal acylacetylenes can catalyze the reaction of pyridines with secondary phosphine chalcogenides to produce chalcogenophosphorylpyridines under metal-free mild conditions. The mechanism involves migration of chalcogenophosphoryl groups in the intermediate and simultaneous redox elimination of vinyl ketone oligomers.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Organic
Geeta Devi Yadav, Pooja Chaudhary, Balaram Pani, Surendra Singh
Summary: Chiral transition metal complexes with privileged ligands are efficient catalysts for various asymmetric organic transformations. Transition metal complexes of C1-symmetric pyrrolidine-based ligands have been widely used in asymmetric organic reactions. However, a comprehensive review article on the transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline has not been published.
TETRAHEDRON LETTERS
(2024)
