Article
Chemistry, Multidisciplinary
Yang Shi, Zhengyang Bin, Jiahui Liu, Weiguo Han, Ge Yang, Bowen Lei, Jingsong You
Summary: In this study, a 3D molecular interaction architecture strategy was proposed to design high-performance electron-transporting materials (ETMs). By synthesizing structurally nontraditional ETMs with a benzo[c]cinnoline (BZC) skeleton, the materials exhibited strong intermolecular interactions and high glass transition temperatures, providing a new approach for the development of high-quality organic light-emitting diodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Jiayue Fu, Bingbing Li, Xiugui Wang, Qida Liang, Xiaoshi Peng, Lu Yang, Tao Wan, Xinxiu Wang, Bin Lin, Maosheng Cheng, Yongxiang Liu
Summary: In this study, a gold(I)-catalyzed 6-endo-dig cyclization of aromatic 1,5-enynes was developed to synthesize 2-(naphthalen-2-yl)anilines. The functional group tolerance of this cyclization was systematically examined, and a possible mechanism was proposed. Derivatization of 2-(naphthalen-2-yl)aniline was carried out to access benzo[alpha]carbazole, benzo[c,h]cinnoline and dibenzo[i]phenanthridine derivatives in a divergent manner.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Organic
Ling Tang, Shuangshuang Jiang, Xinmiao Huang, Zhiyong Song, Jian-bo Wang, Ming Ma, Bo Chen, Yuanhong Ma
Summary: This study presents a novel cascade reaction and a metal-free coupling process facilitated by a commercially available catalyst, enabling the synthesis of benzo[a]carbazole derivatives with high yields and a straightforward procedure.
Article
Chemistry, Inorganic & Nuclear
Hongsheng Li, Junhao Zhao, Songjian Yi, Kongzhen Hu, Pengju Feng
Summary: A highly efficient palladium-catalyzed cascade annulation has been developed to access various benzo[c]cinnoline derivatives at 80 degrees C, with a pyridine-type ligand improving the reaction efficiency to yield up to 94%. This novel approach offers a one-pot dual C-H activation strategy with good functional group tolerance and easy conversion into cinnoline derivatives.
Article
Chemistry, Organic
Jiaao Ge, Hongli Wu, Deping Kong, Genping Huang
Summary: Density functional theory calculations were used to investigate the cobalt-catalyzed intermolecular hydroacylation/cyclization of 1,6-enynes with aldehydes. The study showed that the initial oxidative cyclization is the rate-determining step of the overall reaction, and the enantioselectivity is mainly caused by steric repulsion between the aldehyde moiety and the aryl substituent of the 1,6-enyne.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Engineering, Environmental
Chunlei Jiao, Chaonan Dong, Changjian Xie, Wenhe Luo, Junzhe Zhang, Shixian Fan, Yabo Liu, Yuhui Ma, Xiao He, Zhiyong Zhang
Summary: This study investigated the dissolution and retention of CeO2 nanoparticles in soil under dynamic redox conditions, highlighting the influence of occasional reductive conditions on the migration and diffusion of Ce species. Results showed that reductant-induced initial reductive conditions led to temporary reductive dissolution of Ce(IV), followed by slow retention, while dissolution and retention were not significant without added reductant. XANES analysis revealed that most Ce species existed as Ce(IV) after long-term aging, indicating that soil redox conditions determined the behavior of CeO2 NPs. Time-course studies are important for understanding nano-soil interactions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Cheng Zhang, Qian Chen, Lei Wang, Qiaoying Sun, Yangyang Yang, Matthias Rudolph, Frank Rominger, A. Stephen K. Hashmi
Summary: Here, we present a general and modular strategy for the rapid assembly of benzo[c]phenanthridine (BCP) derivatives using homogeneous gold catalysis. This strategy involves a selectively intramolecular cascade reaction followed by an intermolecular cyclization to form successive C-N and C-C bonds. By utilizing readily available nitriles as the nitrogen source, the products are obtained in good yield with excellent functional group compatibility.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Organic
Jaqueline S. A. Badaro, Beata Koszarna, Manon H. E. Bousquet, Erik T. Ouellette, Denis Jacquemin, Daniel T. Gryko
Summary: Benzo[a]indolizines with ordered electron-withdrawing substituents were synthesized. This method allows for refined control of the photophysical properties of the compounds. The ability to substitute various groups on the heterocyclic skeleton offers unprecedented opportunities to study their fate in the excited state.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Organic
Siyu Wang, Yuhan Li, Zhuoqi Zhang, Jinbao Xiang, Lianyou Zheng
Summary: A mild and efficient catalyst-free alpha-allylation of 3,4-dihydroisoquinoline imines with Morita-Baylis-Hillman (MBH) carbonates was successfully achieved. The study includes the investigation of the scope of 3,4-dihydroisoquinolines and MBH carbonates, as well as gram-scale synthesis. Densely functionalized adducts were obtained in moderate to good yields, demonstrating the synthetic utility of these versatile synthons.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Haoyu Tang, Min-Hao Wu, Hsiao-Yu Lin, Meng-Ru Han, Yueh-Hua Tu, Zhi-Jie Yang, Tun-Cheng Chien, Nei-Li Chan, Wei-chen Chang
Summary: This study reports the structure and catalytic mechanism of deoxypodophyllotoxin synthase, and finds that the cyclization reaction likely proceeds through hydrogen atom abstraction, ring closure, and rearomatization. This finding provides guidance for the synthesis of deoxypodophyllotoxin analogs.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biochemistry & Molecular Biology
Luis G. Ardon-Munoz, Jeanne L. Bolliger
Summary: Many nitrogen- and sulfur-containing heterocyclic compounds with biological activity have been discovered. This study focuses on the synthesis of benzo[4,5]thiazolo[2,3-c][1,2,4]triazoles, an important class of heterocycles. A new synthetic protocol involving oxidation and subsequent C-H bond functionalization is reported, which provides a short reaction time and high yields.
Article
Chemistry, Multidisciplinary
Rosalyn L. Falconer, Gary S. Nichol, Ivan Smolyar, Scott L. Cockroft, Michael J. Cowley
Summary: This study presents a new class of organometallic compounds, dihydrodialanes supported by amidophosphine ligands. The ligand acts as a stereochemical reporter for reversible reductive elimination/oxidative addition chemistry involving Al-I and Al-III intermediates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Vasily A. Migulin
Summary: A new cascade reaction was reported, in which unsaturated 1,2-diiodides participate in a double Heck coupling with an unprecedented nucleophile inclusion. The target molecule's complex structure is constructed from four independent components in one domino procedure. The reaction's mechanism and synthetic protocols for different substrates were discussed.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Analytical
Raphael P. Bacil, Pedro H. M. Garcia, Silvia Helena Pires Serrano
Summary: The classic epinephrine's ECE mechanism is revisited and found to be a multi-step irreversible electron transfer with a very fast intramolecular cyclization. It involves an EECEE with a potential inversion, instead of a couple of two-electron processes in a single-step transfer. The electrochemical and chemical steps are found to be pH dependent.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Suman Maji, Sukumar Pradhan, Karishma Pidiyara, Siddhartha Maiti, Shaeel A. Al-Thabaiti, Debabrata Maiti
Summary: This work presents a palladium(II)-catalyzed regioselective C8-H olefination of 1-naphthamides. Notably, naphthamide fused lactam 2,3-dihydro-1H-benzo[de]isoquinolin-1-one derivatives were synthesized in a particular class of napthamides. The reaction showed good compatibility with a diverse range of acrylates and styrenes, providing the desired products with high yields and tolerance to various functional groups. The developed strategy was further employed for the synthesis of different drug derivatives.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Marko Tomin, Igor Roncevic, Zlatko Mihalic
CROATICA CHEMICA ACTA
(2016)
Article
Chemistry, Physical
Petar Bibulic, Igor Roncevic, Katarina Varga, Zlatko Mihalic, Hrvoj Vancik
JOURNAL OF MOLECULAR STRUCTURE
(2016)
Article
Chemistry, Multidisciplinary
Tomislav Masek, Natasa Perin, Livio Racane, Maja Cindric, Hana Cipcic Paljetak, Mihaela Peric, Mario Matijasic, Donatella Verbanac, Bozo Radic, Jelena Suran, Kristina Starcevic
CROATICA CHEMICA ACTA
(2018)
Article
Chemistry, Physical
Katarina Varga, Ivana Biljan, Vladislav Tomisic, Zlatko Mihalic, Hrvoj Vancik
JOURNAL OF PHYSICAL CHEMISTRY A
(2018)
Article
Biochemistry & Molecular Biology
Livio Racane, Lucija Pticek, Mirela Sedic, Petra Grbcic, Sandra Kraljevic Pavelic, Branimir Bertosa, Irena Sovic, Grace Karminski-Zamola
MOLECULAR DIVERSITY
(2018)
Article
Biochemistry & Molecular Biology
Livio Racane, Lucija Pticek, Glorija Fajdetic, Vesna Tralic-Kulenovic, Marko Klobucar, Sandra Kraljevic Pavelic, Mihaela Peric, Hana Cipcic Paljetak, Donatella Verbanac, Kristina Starcevic
BIOORGANIC CHEMISTRY
(2020)
Article
Biochemistry & Molecular Biology
Livio Racane, Maja Cindric, Ivo Zlatar, Tatjana Kezele, Astrid Milic, Karmen Brajsa, Marijana Hranjec
Summary: Newly synthesised benzimidazole/benzothiazole derivatives were evaluated for potential antitumor activity in vitro, with benzothiazole compounds showing higher activity compared to benzimidazole analogues. The compounds exhibited a similar mode of action on A549 cells as the standard doxorubicin. ADME analysis revealed that one active benzimidazole derivative had lower lipophilicity and higher metabolic instability. No significant differences were observed in ADME profiles between active and non-active compounds.
JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Iva Zonjic, Lidija-Marija Tumir, Ivo Crnolatac, Filip Supljika, Livio Racane, Sanja Tomic, Marijana Radic Stojkovic
Summary: Interactions between a series of benzothiazole ligands and nucleic acid structures were screened using competition dialysis. Two compounds demonstrated high affinities against 13 nucleic acid structures, while another compound showed high selectivity among the studied compounds. Additionally, some compounds exhibited specific effects on certain nucleic acid structures.
Article
Chemistry, Medicinal
Anja Bec, Livio Racane, Teo Tomic, Leentje Persoons, Dirk Daelemans, Mihailo Banjanac, Vedrana Radovanovic, Marijana Hranjec
Summary: The aim of this study was to synthesize novel benzazoles with amidino and 2-hydroxyphenyl substituents and explore their biological activity. New benzazoles were synthesized by condensation of 5-substituted salicylaldehydes and intermediates using previously developed procedures, and were tested for antibacterial and antiproliferative activity in vitro. The results showed that benzimidazole with a 2-imidazolinyl group 27 and benzothiazole with an unsubstituted amidine 48 exhibited the best antibacterial activity (minimum inhibitory concentration 8 μg/ml). Benzothiazole 53 was found to be the most potent compound in inhibiting the proliferation of various cancer cells (IC50: 1.2-2.0 μM). In conclusion, the most active compounds have been identified as lead compounds for further optimization to enhance their biological activity. The type of amidine moiety significantly influenced the biological activity, with benzothiazoles showing superior antiproliferative activity compared to benzimidazoles.
FUTURE MEDICINAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Anja Bec, Livio Racane, Lucija Zonja, Leentje Persoons, Dirk Daelemans, Kristina Starcevic, Robert Vianello, Marijana Hranjec
Summary: In this study, novel substituted coumarin-benzimidazole/benzothiazole hybrids with a cyclic amidino group on the benzazole core were designed and synthesized as biologically active agents. The prepared compounds were evaluated for their antiviral, antioxidative, and antiproliferative activities. Coumarin-benzimidazole hybrid 10 exhibited the most promising broad spectrum antiviral activity, while hybrids 13 and 14 demonstrated the highest antioxidative capacity. Computational analysis supported these results and showed the importance of the cationic amidine unit and the electron-donating diethylamine group in the coumarin core. The substitution of the coumarin ring at position 7 with a N,N-diethylamino group also enhanced the antiproliferative activity, with derivatives 13 and 18 being the most active.
RSC MEDICINAL CHEMISTRY
(2023)
Article
Chemistry, Organic
Lucija Pticek, Lucija Hok, Petra Grbcic, Filip Topic, Mario Cetina, Kari Rissanen, Sandra Kraljevic Pavelic, Robert Vianello, Livio Racane
Summary: A new library of 5- and 6-amidino substituted 2-arylbenzoxazoles was synthesized using the Pinner reaction, and these compounds exhibited sub-micromolar activities against SW620 tumor cells.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Katarina Varga, Hrvoj Vancik, Zlatko Mihalic
CROATICA CHEMICA ACTA
(2020)
Article
Chemistry, Multidisciplinary
Livio Racane, Kristina Butkovic, Irena Martin-Kleiner, Marijeta Kralj, Grace Karminski-Zamola, Marijana Hranjec
CROATICA CHEMICA ACTA
(2019)
Article
Oncology
Livio Racane, Mirela Sedic, Natasa Ilic, Maja Aleksic, Sandra Kraljevic Pavelic, Grace Karminski-Zamola
ANTI-CANCER AGENTS IN MEDICINAL CHEMISTRY
(2017)
Article
Chemistry, Multidisciplinary
Livio Racane, Maja Cindric, Natasa Perin, Petra Roskaric, Kristina Starcevic, Tomislav Masek, Maja Mauric, Jasna Dogan, Grace Karminski-Zamola
CROATICA CHEMICA ACTA
(2017)
Article
Chemistry, Organic
Fuying Zhu, Yamei Lin
Summary: In this study, a low-metal iron-supported catalyst (Fe20/NC-Mg) was reported for the efficient synthesis of quinoxaline compounds, using water as a solvent and without additional bases. The synergistic effect of FeNx site and Mg (OH)2 nanorods in the catalyst played a key role in achieving high yields (82-91%) in 16 examples. The gram-level synthesis and reusability of the catalysts after four cycles demonstrated its industrial application potential.
Article
Chemistry, Organic
Mikhail Kozlov, Alexey Tyurin, Andrey Dmitrenok, Vyacheslav Rusak, Aleksander Fedorov, Igor Zavarzin, Yulia Volkova
Summary: This study presents a novel and practical synthesis method for phosphorus-substituted 1,3,4-thiadiazolines using phosphorylthioformic acid hydrazides and ketones. The protocol demonstrates operational simplicity, availability of reagents, and tolerance towards different functional groups.
Article
Chemistry, Organic
Jisna Jose, Thomas Mathew
Summary: 2-Cyclopentenone and its derivatives are highly esteemed synthetic intermediates with exceptional utility in organic synthesis. They are favored structural motifs in numerous pharmaceutical drugs and natural products, highlighting their significance. The review discusses the various methods used to synthesize cyclopentenones from 2016 to 2023.