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Shalini C, Dharmaraj N, Bhuvanesh NSP, Kaveri MV. Palladium(II) Pincer Type Complexes Containing ONO Donor Heterocyclic Hydrazones: Synthesis, Structure and Catalytic Activity Towards the Suzuki–Miyaura Cross-Coupling of 3-Bromochromone and Arylboronic Acids via C–Br Activation. Catal Letters 2023. [DOI: 10.1007/s10562-023-04276-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Latha Duda M, Velidandi A. Halogenation followed by Deformylation of 3-Formylchromones: A Novel Approaches for Synthesis of 3-Halochromones with Oxone and NaX. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Abstract
Multicomponent reactions are valuable synthetic tools to deliver highly functionalized motifs starting from simple building blocks in only one step and in an atom-economical way. Herein we disclose the structure of a new and unexpected compound, the methyl 5-imino-2-methyl-1,10a-dihydro-5H-chromeno[2,3-b]pyridine-3-carboxylate, which was formed in the ohmic-heating-assisted multicomponent Hantzsch reaction of 3-formylchromone with methyl acetoacetate and ammonium acetate, in aqueous medium, in the presence of tetrabutylammonium bromide as phase transfer catalyst. The title compound was isolated with no need of chromatographic separation and was analyzed by nuclear magnetic resonance (1H and 13C-NMR, HSQC and HMBC) spectroscopy, mass spectrometry (MS) and high-resolution mass spectrometry (HRMS). Its formation as the main reaction product was observed when the reaction was performed using ohmic heating, which may lead to some speculations about the possible existence of specific effects of ohmic heating in the reactivity pathway because of the passage of an alternating electric current of high frequency within the reaction media, opening new opportunities for further investigations of the potential of this thermal processing method in organic synthesis and reactivity optimization.
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Grillo G, Cintas P, Colia M, Calcio Gaudino E, Cravotto G. Process intensification in continuous flow organic synthesis with enabling and hybrid technologies. FRONTIERS IN CHEMICAL ENGINEERING 2022. [DOI: 10.3389/fceng.2022.966451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Industrial organic synthesis is time and energy consuming, and generates substantial waste. Traditional conductive heating and mixing in batch reactors is no longer competitive with continuous-flow synthetic methods and enabling technologies that can strongly promote reaction kinetics. These advances lead to faster and simplified downstream processes with easier workup, purification and process scale-up. In the current Industry 4.0 revolution, new advances that are based on cyber-physical systems and artificial intelligence will be able to optimize and invigorate synthetic processes by connecting cascade reactors with continuous in-line monitoring and even predict solutions in case of unforeseen events. Alternative energy sources, such as dielectric and ohmic heating, ultrasound, hydrodynamic cavitation, reactive extruders and plasma have revolutionized standard procedures. So-called hybrid or hyphenated techniques, where the combination of two different energy sources often generates synergistic effects, are also worthy of mention. Herein, we report our consolidated experience of all of these alternative techniques.
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Pereira MRRC, Ribeiro AFG, Silva AMS, Silva VLM. Ohmic heating-assisted regioselective sulfonation of aniline: synthesis of sulfanilic acid. NEW J CHEM 2022. [DOI: 10.1039/d2nj02990a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The sulfonation of aniline was made, for the first time, using an ohmic heating reactor to produce sulfanilic acid, a compound of great economic interest. High heating rate, low thermal inertia and high selectivity are key advantages of this process.
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Affiliation(s)
| | - Alejandro F. G. Ribeiro
- Bondalti Chemicals S.A., Rua do Amoníaco Português no. 10 Beduído, 3860-680 Estarreja, Portugal
| | - Artur M. S. Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Vera L. M. Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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Alkanan ZT, Altemimi AB, Al-Hilphy ARS, Cacciola F, Ibrahim SA. Application and Effects of Ohmic-Vacuum Combination Heating on the Quality Factors of Tomato Paste. Foods 2021; 10:2920. [PMID: 34945470 PMCID: PMC8700374 DOI: 10.3390/foods10122920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/17/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022] Open
Abstract
Ohmic-vacuum combination heating is a common method used in the food industry as a concentration process. In the present study, an OH-VC combination heating system was developed for producing tomato paste at temperatures of 70, 80, and 90 °C and pressure of 0.3, 0.5, and 0.7 bar and electric field of 1.82, 2.73, and 3.64 V/cm using a central composite design. The effects of heating conditions on the quality and sensory evaluation of tomato paste were also evaluated. Each combination of temperature, pressure, and the electric field was quantified for specific energy consumption, energy efficiency, and productivity. A decrease of 35.08% in the amount of acid ascorbic and lycopene content 19.01%, using conventional heating compared to ohmic-vacuum heating under optimized conditions, was attained. The results also highlighted an increase in the amount of HMF (69.79%) and PME (24.33%) using conventional heating compared to ohmic-vacuum heating under optimized conditions. Ascorbic acid, lycopene, titratable acidity, productivity, energy efficiency was higher than conventional heating; on the other hand, HMF, PME, pH, SEC were lower than conventional heating at the applied OH-VC process. No significant effects between OH-VC and conventional heating on the TSS were observed. In addition, OH-VC heating was highly efficient in the inhibition of bacterial growth. Further, a minor effect on the sensory properties of tomato paste with OH-VC heating compared to the conventional treatment. The obtained results indicate a strong potential for an OH-VC combination heating system as a rapid-heating, high-efficiency alternative for saving electrical energy consumption and preserving nutritional value.
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Affiliation(s)
- Zina T. Alkanan
- Department of Food Science, College of Agriculture, University of Basrah, Basrah 61004, Iraq; (Z.T.A.); (A.R.S.A.-H.)
| | - Ammar B. Altemimi
- Department of Food Science, College of Agriculture, University of Basrah, Basrah 61004, Iraq; (Z.T.A.); (A.R.S.A.-H.)
| | - Asaad R. S. Al-Hilphy
- Department of Food Science, College of Agriculture, University of Basrah, Basrah 61004, Iraq; (Z.T.A.); (A.R.S.A.-H.)
| | - Francesco Cacciola
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, Via Consolare Valeria, 98125 Messina, Italy;
| | - Salam A. Ibrahim
- Food and Nutritional Science Program, North Carolina A & T State University, Greensboro, NC 27411, USA;
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Ramos ITL, Silva RJM, Silva TMS, Camara CA. Palladium-catalyzed coupling reactions in flavonoids: A retrospective of recent synthetic approaches. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1988643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ingrid T. L. Ramos
- Chemistry Department, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Rerison J. M. Silva
- Chemistry Department, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Tania M. S. Silva
- Chemistry Department, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Celso A. Camara
- Chemistry Department, Universidade Federal Rural de Pernambuco, Recife, Brazil
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Shatokhin SS, Tuskaev VA, Gagieva SC, Oganesyan ÉT. Synthesis of heterocyclic analogs of isoflavone and homoisoflavone based on 3-formylchromone. Russ Chem Bull 2021; 70:1011-1045. [PMID: 34305378 PMCID: PMC8279107 DOI: 10.1007/s11172-021-3183-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/13/2020] [Accepted: 11/03/2020] [Indexed: 10/24/2022]
Abstract
The review is focused on recent developments of chemistry of synthetic analogs of natural compounds, isoflavone and homoisoflavone. The possible synthetic strategies to access heterocyclic analogs of these compounds starting from readily available 3-formylchromone and its derivatives (3-cyanochromone, 2-amino-3-formylchromone) and products of its condensation with simplest C- and N-nucleophiles are discussed. The structural features of the reaction products that depend on the nature of the reaction medium, structure of the starting compounds, and reagent ratio are considered. Particular attention is given to the application of the modern strategies of organic synthesis, namely green chemistry approaches, click reactions, domino reactions, etc. Examples of compounds of this group most promising for clinical application due to wide and pronounced pharmacological effects are given.
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Affiliation(s)
- S. S. Shatokhin
- Pyatigorsk Medical and Pharmaceutical Institute, branch of the Volgograd State Medical University of the Ministry of Health of the Russian Federation, 11 prosp. Kalinina, 357532 Pyatigorsk, Russian Federation
| | - V. A. Tuskaev
- Department of Chemistry, Lomonosov Moscow State University, 1 Buld. 3, Leninskie Gory, 119991 Moscow, Russian Federation
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation
| | - S. Ch. Gagieva
- Department of Chemistry, Lomonosov Moscow State University, 1 Buld. 3, Leninskie Gory, 119991 Moscow, Russian Federation
| | - É. T. Oganesyan
- Pyatigorsk Medical and Pharmaceutical Institute, branch of the Volgograd State Medical University of the Ministry of Health of the Russian Federation, 11 prosp. Kalinina, 357532 Pyatigorsk, Russian Federation
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Chang Y, Liu L, Peng W, Lin L, Chan Y, Tsai F. Stille coupling for the synthesis of isoflavones by a reusable palladium catalyst in water. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202000478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ya‐Ting Chang
- Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei Taiwan
| | - Ling‐Jun Liu
- Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei Taiwan
| | - Wen‐Sheng Peng
- Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei Taiwan
| | - Lin‐Ting Lin
- Department of Chemistry National Taiwan University Taipei Taiwan
| | - Yi‐Tsu Chan
- Department of Chemistry National Taiwan University Taipei Taiwan
| | - Fu‐Yu Tsai
- Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei Taiwan
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Soengas RG, Rodríguez-Solla H. Modern Synthetic Methods for the Stereoselective Construction of 1,3-Dienes. Molecules 2021; 26:molecules26020249. [PMID: 33418882 PMCID: PMC7825119 DOI: 10.3390/molecules26020249] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022] Open
Abstract
The 1,3-butadiene motif is widely found in many natural products and drug candidates with relevant biological activities. Moreover, dienes are important targets for synthetic chemists, due to their ability to give access to a wide range of functional group transformations, including a broad range of C-C bond-forming processes. Therefore, the stereoselective preparation of dienes have attracted much attention over the past decades, and the search for new synthetic protocols continues unabated. The aim of this review is to give an overview of the diverse methodologies that have emerged in the last decade, with a focus on the synthetic processes that meet the requirements of efficiency and sustainability of modern organic chemistry.
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