Article
Chemistry, Multidisciplinary
Angad B. Barkule, Yatin U. Gadkari, Simren S. Salim, Savita B. Lomte, Vikas N. Telvekar
Summary: An expeditious and highly efficient methodology for the synthesis of pyrazolopyranopyrimidine under aqueous conditions using guanidine hydrochloride as a catalyst is reported. The one-pot multicomponent synthesis from aryl/heterocyclic aldehyde, ethyl acetoacetate, barbituric acid, and hydrazine hydrate yields the final compound in moderate to excellent yield. The guanidine hydrochloride shows recyclability (up to 4 cycles), safety, low cost, and wide stability profile, making it an ideal catalyst. The current protocol offers advantages such as environmentally benign nature, shorter reaction time, high yield, simple work-up procedure, broad substrate tolerance, and absence of hazardous organic solvent.
Article
Chemistry, Multidisciplinary
T. T. Wen, L. Z. Wang
Summary: A magnetic core-shell copper-based nanocatalyst was successfully prepared and characterized using various analytical techniques. The highly efficient catalyst exhibited excellent catalytic activity and selectivity in the one-pot synthesis of diester/methyl-substituted polycyclic fused 1,5-benzodiazepines. The catalyst's easy recovery and reusability, along with its practicality, environmental friendliness, and economic attractiveness, make it a promising candidate for various applications.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Challa Madhavi, Alice Rinky Robert, Kranthi Kumar Gangu, Nagaraju Kerru, Suresh Maddila
Summary: A novel, environmentally friendly catalyst SeO2/HAp has been synthesized and characterized. The catalyst exhibits high stability and can be successfully used for the synthesis of morpholino1,4-dihydropyridine-2,3-dicarboxylates with excellent product yields. The catalyst can be easily recycled without activity loss, making it a promising candidate for green chemistry applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Gaurav Verma, Katherine Forrest, Benjamin A. Carr, Harsh Vardhan, Junyu Ren, Tony Pham, Brian Space, Sanjay Kumar, Shengqian Ma
Summary: The In-based MOF In-pbpta with soc topology showed high surface area and pore volume, making it a promising catalyst for the one-pot multicomponent Strecker reaction. The strong interactions between substrates and the In-oxo cluster in the MOF lead to efficient catalytic conversion within a short period of time, indicating its potential as a new class of efficient heterogeneous catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Sujuan Ge, Yuming Zhou, Xiaoli Sheng, Chunfeng Mao, Lina Zhao, Jianxing Xu, Lei Qiu
Summary: Piperidinium-based ionic liquids were synthesized to achieve high catalytic activity and stability. The optimal reaction conditions include a reaction temperature of 40°C, ILs/O molar ratio of 0.2:1, px/O molar ratio of 12:1, and a reaction time of 30 minutes, with [Pip(1,8)]Br-2AlCl(3) being able to be recycled 14 times.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Archana Rajmane, Rupesh Bandal, Sunita Shirke, Utkarsh More, Suresh Patil, Arjun Kumbhar
Summary: We successfully synthesized a new surfactant called [DABCO-C18]Br, which showed good yield and surfactant properties. The surfactant was used as a catalyst for the synthesis of dihydropyrano [3,2-c]chromenes and 2-aminobenzochromenes in water, demonstrating high catalytic efficiency. The method is fast, energy-efficient, environmentally friendly, and can be used for large-scale synthesis.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Jia-Yi Shou, Feng-Ling Qing
Summary: This study reports a three-component radical addition reaction for the selective formation of alpha-alkyl-alpha-SF5 carbonyl compounds. The reaction proceeds through the reaction of SF5 radical with diazo compounds, followed by the addition of a carbon radical to alkene. Additionally, the reaction can be used to prepare alpha-allyl-alpha-SF5 carbonyl compounds, and the three-component adducts formed can be converted into pentafluorosulfanylfurans.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Analytical
Rongbin Li, Hongde Xia, Qian Huang, Peter Hedstrom, Wangzhong Mu, Kai Wei, Fengqin Liu, Hongliang Zhao
Summary: Quantitative mass spectrometry analysis for multi-component gas phase reaction processes is a complex nonlinear problem with multiple inputs and outputs. Conventional linear calibration and analytical methods may lead to misjudgment of reaction mechanisms and inaccuracies in determining reaction kinetics. This study confirms the nonlinearity of mass spectrometry and proposes methods to properly handle the nonlinearity, allowing accurate determination of physical parameters and characterization of reaction mechanisms and dynamics.
ANALYTICA CHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Kai Sun, Shuchang Song, Anuj Kumar, Zhicheng Shang, Xinxuan Duan, Shiyuan Wang, Shubo Tian, Jialun Tang, Daojin Zhou, Xiaoming Sun
Summary: The study demonstrated a synthesis method assisted by formamide to successfully synthesize seven metal sulfide nanocrystals, providing a new approach for ecofriendly, fast, and general strategies in green chemistry.
ACS APPLIED NANO MATERIALS
(2021)
Article
Polymer Science
Elena Platonova, Islam Chechenov, Alexander Pavlov, Vitaliy Solodilov, Egor Afanasyev, Alexey Shapagin, Alexander Polezhaev
Summary: A series of thermally remendable and recyclable polyurethanes crosslinked via reversible furan-maleimide Diels-Alder reaction showed strong dependency of Young modulus on BMI content, allowing for materials with varying elasticity. The DA and retro-DA reactions between furan and maleimide were investigated by various analytical techniques, demonstrating high strengths and recyclability in at least five reprocessing cycles.
Article
Chemistry, Organic
Sachie Yamamoto, Naruki Ishida, Takeshi Yasuda, Takaki Kanbara, Junpei Kuwabara
Summary: The Povarov reaction was utilized to synthesize nitrogen-containing aromatic compounds through a triple Povarov reaction of 1,3,5-triaminobenzene with aromatic aldehydes and phenylacetylene. The reactions with arylaldehydes containing electron-donating groups proceeded smoothly while those with electron-withdrawing groups resulted in low yields. The study also investigated the crystal structures and physical properties of pi-extended nitrogen-containing aromatic compounds.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Ben-Jie Jiang, Song-Lin Zhang
Summary: A general method is developed for the synthesis of quinolines and C2-functionalized quinolines from ortho-alkenyl anilines using a difluorocarbene precursor. The method involves the in-situ generation of isocyanides from primary aniline and difluorocarbene, which then undergo alpha-addition by neighboring alkenyl groups to form the quinoline ring. In the presence of Se, selenoisocyanate intermediates are generated, leading to the synthesis of 2-SeH quinolines. The method allows for the modular synthesis of various C2-functionalized quinolines in one step, using readily available starting compounds.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Applied
Hongmei Zhu, Lei Chen, Rongxian Bai, Yanlong Gu
Summary: Two classes of indole-tetrahydropyridine hybrid molecules were synthesized via three-component reactions, providing a straightforward approach for accessing diverse molecular structures. The reactions were likely triggered by Michael addition, leading to the formation of indol-3-ylimine intermediate, which was then trapped by the indole component. The resulting indol-3-yl-substituted tetrahydropyridines could be converted into indole-pyridine hybrid molecules with the aid of DDQ.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Zhongxin Chen, Jingting Song, Xinwen Peng, Shibo Xi, Jia Liu, Wenhui Zhou, Runlai Li, Rile Ge, Cuibo Liu, Haisen Xu, Xiaoxu Zhao, Haohan Li, Xin Zhou, Lu Wang, Xing Li, Linxin Zhong, Alexandre I. Rykov, Junhu Wang, Ming Joo Koh, Kian Ping Loh
Summary: The study focuses on the development of mechanically strong, hierarchically porous carbon plates for the immobilization of single-atom catalysts (SACs) to enhance catalytic activity and stability. The carbon-based SACs exhibit excellent activity and selectivity for the synthesis of a wide assortment of quinolines through a three-component oxidative cyclization. The strategy is also applicable to challenging reactions such as the deuteration of quinolines at the fourth position.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Applied
Fathali Gholami Orimi, Behrooz Mirza, Zinatossadat Hossaini
Summary: In this research, imidazole derivatives were synthesized in high yields using a five component reaction in water at room temperature, with Fe3O4/ZnO/MWCNTs nanocomposites as catalyst. The synthesized compounds showed significant antioxidant and antimicrobial activity, demonstrating the effectiveness of the process.
APPLIED ORGANOMETALLIC 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)
