Article
Crystallography
Nabyl Merbouh, Simon Cassegrain, Wen Zhou
Summary: The crystal structures of two unsubstituted arylnaphthalene lactones and one non-aromatic dihydro arylnaphthene lactone were reported in the study, showing only minor differences in geometrical parameters and the presence of both isomers in the same asymmetric unit cell in certain cases.
Article
Thermodynamics
Mojgan Ebrahiminejadhasanabadi, Wayne Michael Nelson, Paramespri Naidoo
Summary: In this study, the solubility of methane and ethane in n-methyl-2-pyrrolidone and monoethanolamine-based solvents was determined. The results showed that replacing the aqueous part of monoethanolamine solvents with n-methyl-2-pyrrolidone increased the solubility of desirable components of natural gas. Adding monoethanolamine to n-methyl-2-pyrrolidone outperformed the Purisol solvent in terms of carbon dioxide absorption and decreased hydrocarbon solubility.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Cell Biology
Rafal Lenda, Michal Padjasek, Artur Krezel, Andrzej Ozyhar, Dominika Bystranowska
Summary: This study analyzed the effect of Zn(II) and Ca(II) on the structure of human nesfatin-1, -2, and -1/2. The results revealed that human nesfatin-1 is an intrinsically disordered protein, while nesfatin-2 and nesfatin-1/2 have globular structures with intrinsically disordered regions. Zn(II) treatment led to structurization and compaction of nesfatin-1, as well as destabilization of nesfatin-2 and nesfatin-1/2. Furthermore, nesfatin-1 and -2 seemed to be interdependent when linked together, as the properties of nesfatin-1/2 were not a simple sum of the properties exhibited by the individual peptides.
CELL COMMUNICATION AND SIGNALING
(2022)
Article
Chemistry, Organic
Elif Serel Yilmaz, Metin Zora
Summary: This study reports a novel method for the synthesis of 2-(prop-2-yn-1-ylidene)-2,3-dihydro-1,4-thiazepines from N-(2,4-pentadiynyl) beta-enaminones. The method involves thionation and cyclization reactions, demonstrating broad functional group tolerance and potentially providing quick access to a library of functionalized 1,4-thiazepines in pharmaceutical chemistry.
SYNTHETIC COMMUNICATIONS
(2021)
Article
Thermodynamics
Chuangchuang Cao, Jianguo Zhang, Bowen Mei, Wei Li, Tianyou Lian, Yuyang Li
Summary: The laminar flame propagation of branched hexene isomers/air mixtures was studied under different conditions. The fuel molecular structure effects were found to be distinct, with different burning velocities observed for each isomer. A kinetic model was developed and analyzed, revealing the fuel-specific flame chemistry of the isomers. Key reactions and intermediates were identified and their distributions and effects on flame propagation were examined.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Chemistry, Organic
Wei Wang, Zhi-Peng Bao, Xinxin Qi, Xiao-Feng Wu
Summary: A nickel-catalyzed one-pot carbonylation reaction has been established for the synthesis of thiochromenones, producing a wide range of 2-mono- and 2,3-disubstituted products in moderate to good yields with high functional group compatibility. This study represents the first example of nickel-catalyzed carbonylative synthesis of thiochromenones using 2-bromobenzenesulfonyl chlorides as a promising sulfur precursor.
Article
Multidisciplinary Sciences
Yi-Dan Du, Shan Wang, Hai-Wu Du, Xiao-Yong Chang, Xiao-Yi Chen, Yu-Long Li, Wei Shu
Summary: In this study, an organophotocatalytic strategy was developed for the one-step synthesis of diverse 2-piperidinones. This mild and efficient protocol exhibits exclusive chemoselectivity and broad substrate tolerance.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Elmira Meghrazi Ahadi, Alireza Abbasi Kejani, Hormoz Khosravi, Vaezeh Fathi Vaysari, Saeed Balalaie, Frank Rominger, Hamid Reza Bijanzadeh
Summary: Practical Pd-catalyzed 2-pyridones were designed to synthesize chromeno[2,3-b]pyridine-2-ones through domino nucleophilic addition and decarboxylative arylation. This methodology offers an efficient approach to construct bioactive fused-heterocyclic skeletons in a single step with high selectivity and good yields.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Bin He, Phannarath Phansavath, Virginie Ratovelomanana-Vidal
Summary: The kinetic resolution of 2-aryl tetrahydro-4-quinolone derivatives was efficiently achieved through rhodium-catalysed asymmetric transfer hydrogenation using HCO2H/DABCO as the hydrogen source, providing enantiomerically enriched products with high enantioselectivity and selectivity factors.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Organic
Yu Zheng, Tianting Ma, Bingcong Liu, Shenlin Huang
Summary: A direct and efficient method for the synthesis of 3-chloro-2-formylindoles using SO2ClF is reported. This tandem system involves electrophilic chlorination, deprotonation, nucleophilic addition, and oxidation. Under mild conditions, various 2-methylindoles can be successfully transformed into 2,3-difunctionalized indoles in good yields.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Thermodynamics
Valeriy Zhuchkov, Anastasia Frolkova, Alla Frolkova
Summary: This study experimentally investigated the liquid-liquid equilibrium of the ternary system cyclohexene (cyclohexanone) + water + 1-methylpyrrolidin-2-one (N,N-dimethylacetamide) and proposed an efficient separation flowsheet for the production of cyclohexanone. The experimental data were correlated using the nonrandom two-liquid model and found to be in good agreement with the calculated results. The topological structure of the phase diagram was also discussed.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2022)
Article
Chemistry, Organic
Denis S. Baranov, Alexander A. Popov, Danil A. Nevostruev, Alexey A. Dmitriev, Yurii Gatilov, Elena S. Kobeleva
Summary: The method described in this study efficiently synthesizes 2-R-naphtho[2,3-b]thiophene-4,9-diones via a series of reactions starting from 2-bromo-1,4-naphthoquinone and alkynes. The protocol offers mild reaction conditions, good functional group tolerance, and readily available starting materials.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Jae Eun Jung, Yunseong Jang, Hee Jin Jeong, Sung Joon Kim, Kichul Park, Do Hee Oh, Ahran Yu, Chan Sun Park, Seo-Jung Han
Summary: This study discovered that 3,4-dihydropyrimido[4,5-d]pyrimidin-2(1H)-one and 3,4-dihydropyrido[2,3-d]pyrimidin-2(1H)-one derivatives are potent ENPP1 inhibitors with high microsomal stabilities.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Organic
R. Chandran, Abha Sharma, Keshri Nath Tiwari
Summary: We disclose a practical and efficient strategy to synthesize 2,3-dihydroquinazolin-4-(1H)-one derivatives by inserting one carbon into a cyclic N-N bond. The developed protocol is characterized by its simple operation procedures and the ability to produce pharmaceutically useful compounds. Mechanistic studies demonstrate that the predicted intramolecular rearrangement occurs through consecutive ring-opening and cyclization sequences. Additionally, a gram-scale reaction and synthetic transformation of products to quinazolinone derivatives have been presented.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xinyu Zhang, Hui Wang, Lili Xie, Chenhui You, Xiaoyan Han, Zhiqiang Weng
Summary: An efficient synthesis protocol for 5-aryl-6-(trifluoromethyl)-2,3-dihydropyrazolo[1,2-a]pyrazol-1(5H)-one derivatives was developed via copper-catalyzed [3+2]-cycloaddition, with subsequent oxidation and nucleophilic substitution/aromatization providing a new approach to 4-trifluoromethylated pyrazol-1-yl propanoic acids. The transformation boasts a broad substrate scope and good functional group compatibility.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Dina Boyarskaya, Evgeny Bulatov, Irina A. Boyarskaya, Tatiana G. Chulkova, Valentin A. Rassadin, Elena G. Tolstopjatova, Ilya E. Kolesnikov, Margarita S. Avdontceva, Taras L. Panikoroyskii, Vitalii V. Suslonov, Matti Haukka
Article
Chemistry, Physical
Anastasiia M. Afanasenko, Alexander S. Novikov, Tatiana G. Chulkova, Yakov M. Grigoriev, Ilya E. Kolesnikov, Stanislav Selivanov, Galina L. Starova, Andrey A. Zolotarev, Anatoly N. Vereshchagin, Michail N. Elinson
JOURNAL OF MOLECULAR STRUCTURE
(2020)
Article
Chemistry, Physical
Evgeny Bulatov, Elmeri Lahtinen, Lauri Kivijarvi, Evamarie Hey-Hawkins, Matti Haukka
Article
Chemistry, Applied
Mikko K. Makela, Evgeny Bulatov, Kiia Malinen, Juulia Talvitie, Martin Nieger, Michele Melchionna, Anna Lenarda, Tao Hu, Tom Wirtanen, Juho Helaja
Summary: Oxidized active carbon catalyzes the formation of polysubstituted quinolines through a cascade manner involving condensation, electrocyclization, and dehydrogenation, allowing access to a wide range of quinolines. The metal-free catalytic procedure provides a heterogeneous protocol for the synthesis of various polysubstituted quinolines, with mechanistic studies indicating the importance of acid and quinoidic groups in oAC for the catalytic reaction.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Physical
Evgeny Bulatov, Toni Eskelinen, Alexander Yu. Ivanov, Peter M. Tolstoy, Elina Kalenius, Pipsa Hirva, Matti Haukka
Summary: Coordination compounds of platinum(II) can engage in various noncovalent axial interactions involving the metal center, with simultaneous axial interactions with two nucleophilic ligands being almost unprecedented. Structural and computational studies show that these interactions are weak, dispersive, and anti-cooperative in the ground state, but substantially strengthen and become partially covalent and cooperative in the lowest excited state. The strengthening of I...Pt...I contacts in the excited state is also predicted for the only previously reported complex with analogous axial interactions.
Article
Chemistry, Physical
Anastasiia M. Afanasenko, Danil V. Krutin, Artur E. Taishev, Alexander S. Novikov, Tatiana G. Chulkova, Ilya E. Kolesnikov, Ilya V. Kornyakov, Taras L. Panikorovskii, Anatoly N. Vereshchagin, Michail N. Elinson
Summary: This work investigates the substituent effect in 2,3-diarylfumaronitriles on optical properties and intermolecular interactions in the solid state. The study reveals that non-covalent bonds, such as N C···N C, C-H···Cl, and C-H···N C interactions, influence the solid-state luminescent properties of molecules, affecting electronic communication between molecules.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Organic
Juulia Talvitie, Iida Alanko, Evgeny Bulatov, Juho Koivula, Topias Pollanen, Juho Helaja
Summary: By using visible-light-excited 9,10-phenanthrenequinone (PQ*) as a photocatalyst, polysubstituted quinolines were successfully synthesized via the electrocyclization of 2-vinylarylimines. Experimental results showed that quantitative yields of 2,4-disubstituted quinolines could be obtained in a short period of time under blue LEDs excitation with the presence of MgCO3.
Article
Chemistry, Physical
Malgorzata Pamula, Evgeny Bulatov, Kaisa Helttunen
Summary: In this study, an aryl-extended calix[4]pyrrole with four meso-p-hydroxyphenyl substituents was used as a host molecule for chloride, acetate, and benzoate anions. Experimental results showed that chloride ions form hydrogen bonds with the upper rim hydroxyl groups, and the aromatic cations are bound to the shallow cavity of the host. Additionally, a dimeric capsule was formed by the inclusion of adiponitrile guest in the endo-cavity binding site. NMR titrations revealed that the host preferentially binds anionic guests in solution, with benzoate anion exhibiting the highest binding constant in acetonitrile. Density functional theory calculations indicated the preference of the exo-cavity complex with chloride anions over the endo-cavity complex, while the energies of the endo- and exo-cavity benzoate complexes were similar.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Inorganic & Nuclear
Andres F. Sierra, Evgeny Bulatov, Gemma Aragay, Pablo Ballester
Summary: We report the synthesis and characterization of two diastereomeric phosphoramidite calix[4]pyrrole cavitands and their corresponding gold(I) complexes. The catalytic activity of these complexes in the hydration reaction of propargyl esters was studied. The presence of polar hydrogen bond acceptor groups in the substrate was found to decrease the hydration rate constants, possibly due to coordination competition with the Au(I) metal center of the catalysts.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Anton A. Yakimanskiy, Ksenia I. Kaskevich, Elena V. Zhukova, Ivan A. Berezin, Larisa S. Litvinova, Tatiana G. Chulkova, Dmitriy A. Lypenko, Artem V. Dmitriev, Sergey I. Pozin, Natalia V. Nekrasova, Felix N. Tomilin, Daria A. Ivanova, Alexander V. Yakimansky
Summary: Using palladium-catalyzed Suzuki polycondensation, new light-emitting fluorene copolymers containing dicyano derivatives were synthesized and characterized. The synthesized polymers showed significant energy transfer, as confirmed by theoretical calculations. OLEDs based on these polymers exhibited yellow-green luminescence for copolymers with dicyanostilbene and greenish-blue emission for polymers with 9,10-dicyanophenanthrene. The device with 2.5 mol% of 9,10-dicyanophenanthrene showed a maximum brightness of 9230 cd/m2 and a maximum current efficiency of 3.33 cd/A.
Article
Chemistry, Physical
Kalle Kolari, Evgeny Bulatov, Rajendhraprasad Tatikonda, Kia Bertula, Elina Kalenius, Nonappa, Matti Haukka
Article
Multidisciplinary Sciences
Anastasiia M. Afanasenko, Alexander S. Novikov, Tatiana G. Chulkova, Yakov M. Grigoriev, Ilya E. Kolesnikov, Stanislav I. Selivanov, Galina L. Starova, Andrey A. Zolotarev, Anatoly N. Vereshchagin, Michail N. Elinson
Article
Chemistry, Inorganic & Nuclear
Evgeny Bulatov, Matti Haukka
DALTON TRANSACTIONS
(2019)
Article
Chemistry, Physical
Rajendhraprasad Tatikonda, Evgeny Bulatov, Zulal Ozdemir, Nonappa, Matti Haukka
