Cyclizations of Alkenyl(Alkynyl)-Functionalized Quinazolinones and their Heteroanalogues: a Powerful Strategy for the Construction of Polyheterocyclic Structures
Chem Rec. 2023 Oct 13:e202300255. doi: 10.1002/tcr.202300255. Online ahead of print.ABSTRACTQuinazolin-4-one, its heteroanalogues, and derivatives represent an outstandingly important class of compounds in modern organic, medicinal, and pharmaceutical chemistry, as these molecular structures are noted for their wide synthetic and pharmacological potential. In the last years, ever-increasing research attention has been paid to quinazolinone derivatives bearing alkenyl and alkynyl substituents on the pyrimidinone nucleus. The original structural combination of synthetically powerful endocyclic amidine (or amidine-related) an...
Source: Chemical Record - October 13, 2023 Category: Chemistry Authors: Alla Vaskevych Maryna Dekhtyar Mykhailo Vovk Source Type: research
Cyclizations of Alkenyl(Alkynyl)-Functionalized Quinazolinones and their Heteroanalogues: a Powerful Strategy for the Construction of Polyheterocyclic Structures
Chem Rec. 2023 Oct 13:e202300255. doi: 10.1002/tcr.202300255. Online ahead of print.ABSTRACTQuinazolin-4-one, its heteroanalogues, and derivatives represent an outstandingly important class of compounds in modern organic, medicinal, and pharmaceutical chemistry, as these molecular structures are noted for their wide synthetic and pharmacological potential. In the last years, ever-increasing research attention has been paid to quinazolinone derivatives bearing alkenyl and alkynyl substituents on the pyrimidinone nucleus. The original structural combination of synthetically powerful endocyclic amidine (or amidine-related) an...
Source: Chemical Record - October 13, 2023 Category: Chemistry Authors: Alla Vaskevych Maryna Dekhtyar Mykhailo Vovk Source Type: research
Cyclizations of Alkenyl(Alkynyl)-Functionalized Quinazolinones and their Heteroanalogues: a Powerful Strategy for the Construction of Polyheterocyclic Structures
Chem Rec. 2023 Oct 13:e202300255. doi: 10.1002/tcr.202300255. Online ahead of print.ABSTRACTQuinazolin-4-one, its heteroanalogues, and derivatives represent an outstandingly important class of compounds in modern organic, medicinal, and pharmaceutical chemistry, as these molecular structures are noted for their wide synthetic and pharmacological potential. In the last years, ever-increasing research attention has been paid to quinazolinone derivatives bearing alkenyl and alkynyl substituents on the pyrimidinone nucleus. The original structural combination of synthetically powerful endocyclic amidine (or amidine-related) an...
Source: Chemical Record - October 13, 2023 Category: Chemistry Authors: Alla Vaskevych Maryna Dekhtyar Mykhailo Vovk Source Type: research
Chemoselective Reactions of Functionalized Sulfonyl Halides
Chem Rec. 2023 Oct 12:e202300256. doi: 10.1002/tcr.202300256. Online ahead of print.ABSTRACTChemoselective transformations of functionalized sulfonyl fluorides and chlorides are surveyed comprehensively. It is shown that sulfonyl fluorides provide an excellent selectivity control in their reactions. Thus, numerous conditions are tolerated by the SO2 F group - from amide and ester formation to directed ortho-lithiation and transition-metal-catalyzed cross-couplings. Meanwhile, sulfur (VI) fluoride exchange (SuFEx) is also compatible with numerous functional groups, thus confirming its title of "another click reaction". On t...
Source: Chemical Record - October 12, 2023 Category: Chemistry Authors: Oleksandr S Liashuk Vladyslav A Andriashvili Andriy O Tolmachev Oleksandr O Grygorenko Source Type: research
Recent Advances in Floating Photovoltaic Systems
Chem Rec. 2023 Oct 12:e202300229. doi: 10.1002/tcr.202300229. Online ahead of print.ABSTRACTIn recent years, floating photovoltaic (FPV) technologies have gained more importance as a key source of clean energy, particularly in the context of providing sustainable energy to buildings. The rise of land scarcity and the need to reduce carbon emissions have made FPV systems a cost-effective solution for generating electricity. This review article aims to explore the rapidly growing trend of floating PV systems, which can be a practical solution for regions with limited land areas. The article discusses the structure of the PV ...
Source: Chemical Record - October 12, 2023 Category: Chemistry Authors: Asmaa Ahmed Mohamed Elsakka Nabil Elminshawy Ayman Mohamed Senthilarasu Sundaram Source Type: research
Chemoselective Reactions of Functionalized Sulfonyl Halides
Chem Rec. 2023 Oct 12:e202300256. doi: 10.1002/tcr.202300256. Online ahead of print.ABSTRACTChemoselective transformations of functionalized sulfonyl fluorides and chlorides are surveyed comprehensively. It is shown that sulfonyl fluorides provide an excellent selectivity control in their reactions. Thus, numerous conditions are tolerated by the SO2 F group - from amide and ester formation to directed ortho-lithiation and transition-metal-catalyzed cross-couplings. Meanwhile, sulfur (VI) fluoride exchange (SuFEx) is also compatible with numerous functional groups, thus confirming its title of "another click reaction". On t...
Source: Chemical Record - October 12, 2023 Category: Chemistry Authors: Oleksandr S Liashuk Vladyslav A Andriashvili Andriy O Tolmachev Oleksandr O Grygorenko Source Type: research
Recent Advances in Floating Photovoltaic Systems
Chem Rec. 2023 Oct 12:e202300229. doi: 10.1002/tcr.202300229. Online ahead of print.ABSTRACTIn recent years, floating photovoltaic (FPV) technologies have gained more importance as a key source of clean energy, particularly in the context of providing sustainable energy to buildings. The rise of land scarcity and the need to reduce carbon emissions have made FPV systems a cost-effective solution for generating electricity. This review article aims to explore the rapidly growing trend of floating PV systems, which can be a practical solution for regions with limited land areas. The article discusses the structure of the PV ...
Source: Chemical Record - October 12, 2023 Category: Chemistry Authors: Asmaa Ahmed Mohamed Elsakka Nabil Elminshawy Ayman Mohamed Senthilarasu Sundaram Source Type: research
A Personal Account on Inorganic Reaction Mechanisms
Chem Rec. 2023 Oct 11:e202300278. doi: 10.1002/tcr.202300278. Online ahead of print.ABSTRACTThe presented Review is focused on the latest research in the field of inorganic chemistry performed by the van Eldik group and his collaborators. The first part of the manuscript concentrates on the interaction of nitric oxide and its derivatives with biologically important compounds. We summarized mechanistic information on the interaction between model porphyrin systems (microperoxidase) and NO as well as the recent studies on the formation of nitrosylcobalamin (CblNO). The following sections cover the characterization of the Ru(...
Source: Chemical Record - October 11, 2023 Category: Chemistry Authors: Justyna Polaczek Konrad Kieca Maria Oszajca Olga Impert Anna Katafias Debabrata Chatterjee Du šan Ćoćić Ralph Puchta Gra żyna Stochel Colin D Hubbard Rudi van Eldik Source Type: research
Recent Advances in the Catalytic Synthesis of the Cyclopentene Core
Chem Rec. 2023 Oct 11:e202300254. doi: 10.1002/tcr.202300254. Online ahead of print.ABSTRACTFive-membered carbocycles are ubiquitously found in natural products, pharmaceuticals, and other classes of organic compounds. Within this category, cyclopentenes deserve special attention due to their prevalence as targets and as well as key intermediates for synthesizing more complex molecules. Herein, we offer an overview summarizing some significant recent advances in the catalytic assembly of this structural motif. A great variety of synthetic methodologies and strategies are covered, including transition metal-catalyzed or org...
Source: Chemical Record - October 11, 2023 Category: Chemistry Authors: Rub én Miguélez Pablo Barrio Jos é M González Source Type: research
Developments in Titanium-Based Alkali and Alkaline Earth Metal Oxide Catalysts for Sustainable Biodiesel Production: A Review
Chem Rec. 2023 Oct 10:e202300277. doi: 10.1002/tcr.202300277. Online ahead of print.ABSTRACTBiodiesel represents a biodegradable, environmentally friendly, and renewable alternative to fossil fuels. Despite more than three decades of research, significant obstacles still hinder the widespread production of biodiesel. This current review elucidates both the potential and the existing challenges associated with homogeneous and heterogeneous catalysts in catalyzing biodiesel production, with a particular focus on alkali analogues, alkaline earth metal oxides, and titania-based catalysts. In particular, a comprehensive analysi...
Source: Chemical Record - October 10, 2023 Category: Chemistry Authors: Yatish Kalanakoppal Venkatesh Mithun Prakash Ravikumar Shwetharani Ramu Chandan Hunsur Ravikumar Sakar Mohan R Geetha Balakrishna Source Type: research
Developments in Titanium-Based Alkali and Alkaline Earth Metal Oxide Catalysts for Sustainable Biodiesel Production: A Review
Chem Rec. 2023 Oct 10:e202300277. doi: 10.1002/tcr.202300277. Online ahead of print.ABSTRACTBiodiesel represents a biodegradable, environmentally friendly, and renewable alternative to fossil fuels. Despite more than three decades of research, significant obstacles still hinder the widespread production of biodiesel. This current review elucidates both the potential and the existing challenges associated with homogeneous and heterogeneous catalysts in catalyzing biodiesel production, with a particular focus on alkali analogues, alkaline earth metal oxides, and titania-based catalysts. In particular, a comprehensive analysi...
Source: Chemical Record - October 10, 2023 Category: Chemistry Authors: Yatish Kalanakoppal Venkatesh Mithun Prakash Ravikumar Shwetharani Ramu Chandan Hunsur Ravikumar Sakar Mohan R Geetha Balakrishna Source Type: research
Complexation of Flavonoids: Spectral Phenomena, Regioselectivity, Interplay with Charge and Proton Transfer
Chem Rec. 2023 Oct 2:e202300249. doi: 10.1002/tcr.202300249. Online ahead of print.ABSTRACTThe review compiles information on the spectral classification of flavonoids, the changes in their electronic structure upon complex formation, and the manifestation of these changes in the absorption and emission spectra. Part of the review is devoted to the regioselectivity of the complex formation process, including types of complexation sites, the structure of chelates and 'open' complexes, and the correlation between the structure of complexes and their spectral properties. The interplay between complex formation and other proce...
Source: Chemical Record - October 3, 2023 Category: Chemistry Authors: Alexander D Roshal Source Type: research
Complexation of Flavonoids: Spectral Phenomena, Regioselectivity, Interplay with Charge and Proton Transfer
Chem Rec. 2023 Oct 2:e202300249. doi: 10.1002/tcr.202300249. Online ahead of print.ABSTRACTThe review compiles information on the spectral classification of flavonoids, the changes in their electronic structure upon complex formation, and the manifestation of these changes in the absorption and emission spectra. Part of the review is devoted to the regioselectivity of the complex formation process, including types of complexation sites, the structure of chelates and 'open' complexes, and the correlation between the structure of complexes and their spectral properties. The interplay between complex formation and other proce...
Source: Chemical Record - October 3, 2023 Category: Chemistry Authors: Alexander D Roshal Source Type: research
Complexation of Flavonoids: Spectral Phenomena, Regioselectivity, Interplay with Charge and Proton Transfer
Chem Rec. 2023 Oct 2:e202300249. doi: 10.1002/tcr.202300249. Online ahead of print.ABSTRACTThe review compiles information on the spectral classification of flavonoids, the changes in their electronic structure upon complex formation, and the manifestation of these changes in the absorption and emission spectra. Part of the review is devoted to the regioselectivity of the complex formation process, including types of complexation sites, the structure of chelates and 'open' complexes, and the correlation between the structure of complexes and their spectral properties. The interplay between complex formation and other proce...
Source: Chemical Record - October 3, 2023 Category: Chemistry Authors: Alexander D Roshal Source Type: research
Complexation of Flavonoids: Spectral Phenomena, Regioselectivity, Interplay with Charge and Proton Transfer
Chem Rec. 2023 Oct 2:e202300249. doi: 10.1002/tcr.202300249. Online ahead of print.ABSTRACTThe review compiles information on the spectral classification of flavonoids, the changes in their electronic structure upon complex formation, and the manifestation of these changes in the absorption and emission spectra. Part of the review is devoted to the regioselectivity of the complex formation process, including types of complexation sites, the structure of chelates and 'open' complexes, and the correlation between the structure of complexes and their spectral properties. The interplay between complex formation and other proce...
Source: Chemical Record - October 3, 2023 Category: Chemistry Authors: Alexander D Roshal Source Type: research
