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Artículos de revistas sobre el tema "Carbonyl compounds"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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1

Hu, Yue, Wei Sun, and Chao Liu. "Deoxygenative Transformation of Carbonyl and Carboxyl Compounds Using gem-Diborylalkanes." Synlett 30, no. 10 (2019): 1105–10. http://dx.doi.org/10.1055/s-0037-1611728.

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gem-Diborylalkanes serve as privileged carbanion precursors for the efficient construction of carbon–carbon bond with various carbonyl and carboxyl compounds. We highlight the recent advances on deoxygenative transformation of carbonyl and carboxyl compounds using gem-diborylalkanes reagents. Our recent development of a dual functionalization of gem-diborylalkanes through deoxygenative enolization with the carboxylic acids is also discussed.1 Introduction2 Activation Modes of gem-Diborylalkanes3 Deoxygenative Transformation of Carbonyl and Carboxyl ­Compounds via α-Diboryl Carbanion3.1 Reactio
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2

Epstein, S. A., E. Tapavicza, F. Furche, and S. A. Nizkorodov. "Direct photolysis of carbonyl compounds dissolved in cloud and fog droplets." Atmospheric Chemistry and Physics Discussions 13, no. 4 (2013): 10905–37. http://dx.doi.org/10.5194/acpd-13-10905-2013.

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Abstract. Gas phase photolysis is an important tropospheric sink for many carbonyl compounds, however the significance of direct photolysis of carbonyl compounds dissolved in cloud and fog droplets is uncertain. We develop a theoretical approach to assess the importance of aqueous photolysis for a series of carbonyls that possess carboxyl and hydroxyl functional groups by comparison with rates of other atmospheric processes. We use computationally and experimentally derived Henry's law parameters, hydration equilibrium parameters, aqueous hydroxyl radical (OH) rate constants, and optical extin
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3

Vizer, S. A., and K. B. Yerzhanov. "Heterocycles Synthesis at Carbonylation of Acetylenic Compounds." Eurasian Chemico-Technological Journal 5, no. 2 (2016): 145. http://dx.doi.org/10.18321/ectj294.

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The carbonylation of unsaturated hydrocarbons, alcohols, organic halides and other substrates catalyzed by transition metals, salts of transition metals and organometallic complexes is a wide used synthesis method of new carbonyl, carboxyl and alkoxy carbonyl containing compounds including creation or modificationt of heterocycles. The data about synthesis of heterocycles at carbonylation of acetylenic compounds have been appeared at last 20 years and are demonstrated in our review. Introduction of carbon monoxide in the catalytic reactions of acetylenic compounds permits to obtain in oneput p
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4

Epstein, S. A., E. Tapavicza, F. Furche, and S. A. Nizkorodov. "Direct photolysis of carbonyl compounds dissolved in cloud and fog~droplets." Atmospheric Chemistry and Physics 13, no. 18 (2013): 9461–77. http://dx.doi.org/10.5194/acp-13-9461-2013.

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Abstract. Gas-phase photolysis is an important tropospheric sink for many carbonyl compounds; however the significance of direct photolysis of these compounds dissolved in cloud and fog droplets is uncertain. We develop a theoretical approach to assess the importance of aqueous photolysis for a series of carbonyls that possess carboxyl and hydroxyl functional groups by comparison with rates of other atmospheric processes. We use computationally and experimentally derived effective Henry's law constants, hydration equilibrium parameters, aqueous hydroxyl radical (OH) rate constants, and optical
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5

Bao, Jiemeng, Xin Zhang, Zhenhai Wu, et al. "Atmospheric carbonyl compounds are crucial in regional ozone heavy pollution: insights from the Chengdu Plain Urban Agglomeration, China." Atmospheric Chemistry and Physics 25, no. 3 (2025): 1899–916. https://doi.org/10.5194/acp-25-1899-2025.

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Abstract. Gaseous carbonyl compounds serve as crucial precursors and intermediates in atmospheric photochemical reactions, significantly contributing to ambient ozone formation. To determine whether the impact of carbonyl compounds on regional ozone pollution is driven by their abundance or by specific secondary chemical processes, simultaneous field observations and observation-based modeling of ambient carbonyls were conducted at nine sites within the Chengdu Plain Urban Agglomeration (CPUA), China, during 4–18 August 2019, when three episodes of regional heavy ozone pollution occurred acros
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6

Hellén, H., H. Hakola, A. Reissell, and T. M. Ruuskanen. "Carbonyl compounds in boreal coniferous forest air in Hyytiälä, Southern Finland." Atmospheric Chemistry and Physics 4, no. 7 (2004): 1771–80. http://dx.doi.org/10.5194/acp-4-1771-2004.

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Abstract. A variety of C1-C12 carbonyl compounds were measured in the air of a boreal coniferous forest located in Hyytiälä, Southern Finland. 24-hour samples were collected during March and April in 2003 using DNPH (2,4-dinitrophenyl hydrazine) coated C18-cartridges and analyzed by liquid chromatography-mass spectrometry (LC-MS). Altogether 22 carbonyl compounds were quantified. The most abundant carbonyls were acetone (24-hour average 1340ng/m3), formaldehyde (480ng/m3) and acetaldehyde (360ng/m3). Concentrations of monoterpene reaction products nopinone (9ng/m3) and limona ketone (5ng/m3) w
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7

Wang, Jinhe, Shan Chen, Xiaoguo Qiu, et al. "Pollution Characteristics of Atmospheric Carbonyl Compounds in a Large City of Northern China." Journal of Chemistry 2022 (January 24, 2022): 1–13. http://dx.doi.org/10.1155/2022/3292598.

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To better understand the pollution characteristics and formation mechanisms of atmospheric carbonyl compounds, continuous measurements of carbonyl compounds in Jinan were taken for one month at a sampling frequency of 2 h. The sources, pollution characteristics, and concentration changes of carbonyl compounds during the summers of 2018 and 2020 were compared. The total concentrations of carbonyl compounds were 10.51 ± 0.13 ppbV and 6.30 ± 1.08 ppbV in 2018 and 2020, respectively. In both years, formaldehyde, acetone, and acetaldehyde were the major carbonyls. Diurnal variations and correlation
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8

Hellén, H., H. Hakola, A. Reissell, and T. M. Ruuskanen. "Carbonyl compounds in boreal coniferous forest air in Hyytiälä, Southern Finland." Atmospheric Chemistry and Physics Discussions 4, no. 3 (2004): 2991–3011. http://dx.doi.org/10.5194/acpd-4-2991-2004.

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Abstract. A variety of C1-C12 carbonyl compounds were measured in the air of a boreal coniferous forest located in Hyytiälä, Southern Finland. 24-h samples were collected during March and April in 2003 using DNPH (2,4-dinitrophenyl hydrazine) coated C18-cartridges and analyzed by liquid chromatography-mass spectrometry (LC-MS). Altogether 22 carbonyl compounds were quantified. The most abundant carbonyls were acetone (24-h average 1340 ng/m3), formaldehyde (480 ng/m3) and acetaldehyde (360 ng/m3). In contrast, scaling of concentrations against reactivity with the hydroxyl (OH) radical signific
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9

Moldoveanu, S., W. Coleman, and J. Wilkins. "Determination of Carbonyl Compounds in Exhaled Cigarette Smoke." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 22, no. 5 (2007): 346–57. http://dx.doi.org/10.2478/cttr-2013-0841.

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AbstractThis paper presents the findings on a quantitative evaluation of carbonyl levels in exhaled cigarette smoke from human subjects. The cigarettes evaluated include products with 5.0 mg ‘tar’, 10.6 mg ‘tar’ and 16.2 mg ‘tar’, where ‘tar’ is defined as the weight of total wet particulate matter (TPM) minus the weight of nicotine and water, and the cigarettes are smoked following U.S. Federal Trade Commission (FTC) recommendations. The measured levels of carbonyls in the exhaled smoke were compared with calculated yields of carbonyls in the inhaled smoke and a retention efficiency was obtai
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10

Geng, Chunmei, Shijie Li, Baohui Yin, et al. "Atmospheric Carbonyl Compounds in the Central Taklimakan Desert in Summertime: Ambient Levels, Composition and Sources." Atmosphere 13, no. 5 (2022): 761. http://dx.doi.org/10.3390/atmos13050761.

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Although carbonyl compounds are a key species with atmospheric oxidation capacity, their concentrations and sources have not been sufficiently characterized in various atmospheres, especially in desert areas. In this study, atmospheric carbonyl compounds were measured from 16 May to 15 June 2018 in Tazhong in the central Taklimakan Desert, Xinjiang Uygur Autonomous Region, China. Concentrations, chemical compositions, and sources of carbonyl compounds were investigated and compared with those of different environments worldwide. The average concentration of total carbonyls during the sampling
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11

He, Zeyu, Yue Hu, Chungu Xia, and Chao Liu. "Recent advances in the borylative transformation of carbonyl and carboxyl compounds." Organic & Biomolecular Chemistry 17, no. 25 (2019): 6099–113. http://dx.doi.org/10.1039/c9ob01029g.

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12

Moreno, Alberto, Yoana Rabanal-Ruiz, Andrés Moreno-Cabañas, Carlos Sánchez Jiménez, and Beatriz Cabañas. "Ambient Levels of Carbonyl Compounds and Ozone in a Golf Course in Ciudad Real, Spain: A ProtoPRED QSAR (Eco) Toxicity Evaluation." Air 3, no. 1 (2025): 2. https://doi.org/10.3390/air3010002.

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It is well known that carbonyl compounds play an important role in air pollution and the formation of secondary pollutants, such as peroxyacetyl nitrates (PAN). Additionally, airborne carbonyls have been described as cytotoxic, mutagenic and carcinogenic. In this research, several carbonyl compounds, including aldehydes and ketones, as well as ozone, were monitored during a campaign conducted in July and September-October 2023 at Golf Ciudad Real, a golf course located in a non-industrial area of a south-central province in Spain. Extraction and analysis were carried out following procedures o
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13

Son, Yeongkwon, Clifford Weisel, Olivia Wackowski, Stephan Schwander, Cristine Delnevo, and Qingyu Meng. "The Impact of Device Settings, Use Patterns, and Flavorings on Carbonyl Emissions from Electronic Cigarettes." International Journal of Environmental Research and Public Health 17, no. 16 (2020): 5650. http://dx.doi.org/10.3390/ijerph17165650.

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Health impacts of electronic cigarette (e-cigarette) vaping are associated with the harmful chemicals emitted from e-cigarettes such as carbonyls. However, the levels of various carbonyl compounds under real-world vaping conditions have been understudied. This study evaluated the levels of carbonyl compounds (e.g., formaldehyde, acetaldehyde, glyoxal, and diacetyl, etc.) under various device settings (i.e., power output), vaping topographies, and e-liquid compositions (i.e., base liquid, flavor types). The results showed that e-vapor carbonyl levels were the highest under higher power outputs.
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14

Martínez-Ferraté, Oriol, Basujit Chatterjee, Christophe Werlé, and Walter Leitner. "Hydrosilylation of carbonyl and carboxyl groups catalysed by Mn(i) complexes bearing triazole ligands." Catalysis Science & Technology 9, no. 22 (2019): 6370–78. http://dx.doi.org/10.1039/c9cy01738k.

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15

Li, Feifei, Shanshan Tang, Jitao Lv, et al. "Critical contribution of chemically diverse carbonyl molecules to the oxidative potential of atmospheric aerosols." Atmospheric Chemistry and Physics 24, no. 14 (2024): 8397–411. http://dx.doi.org/10.5194/acp-24-8397-2024.

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Abstract. Carbonyls have an important effect on atmospheric chemistry and human health because of their high electrophilicity. Here, high-throughput screening of carbonyl molecules in complex aerosol samples was achieved by combining targeted derivatization with non-targeted analysis using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Results showed that water-soluble organic matter (WSOM) in PM2.5 contains a large variety of carbonyls (5147 in total), accounting for 17.6 % of all identified organic molecules. Compared with non-carbonyl molecules, carbonyl molecules
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16

Ringsdorf, Akima, Achim Edtbauer, Bruna Holanda, et al. "Investigating carbonyl compounds above the Amazon rainforest using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) with NO+ chemical ionization." Atmospheric Chemistry and Physics 24, no. 20 (2024): 11883–910. http://dx.doi.org/10.5194/acp-24-11883-2024.

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Abstract. The photochemistry of carbonyl compounds significantly influences tropospheric chemical composition by altering the local oxidative capacity; free radical abundance in the upper troposphere; and formation of ozone, peroxycarboxylic nitric anhydride (PAN), and secondary organic aerosol particles. Carbonyl compounds can be emitted directly from the biosphere into the atmosphere and are formed through photochemical degradation of various precursor compounds. Aldehydes have atmospheric lifetimes of hours to days, whereas ketones persist for up to several weeks. While standard operating c
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17

Wu, Fan, Cheng Ye та Weiqi Tong. "Nickel-Catalyzed Reductive Cross-Coupling of Oxalates Derived from α-Hydroxy Carbonyls with Vinyl Bromides". Synthesis 54, № 09 (2022): 2251–57. http://dx.doi.org/10.1055/s-0040-1719881.

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AbstractA nickel-catalyzed cross-electrophile coupling is disclosed in which a range of vinyl bromides were utilized as electrophiles with oxalates derived from α-hydroxy carbonyls as precursors to carbonyl radical coupling partners. This method is compatible with a broad range of functional groups, providing a complementary solution for the construction of β,γ-unsaturated carbonyl compounds.
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18

Chen, W. T., M. Shao, S. H. Lu, et al. "Understanding primary and secondary sources of ambient carbonyl compounds in Beijing using the PMF model." Atmospheric Chemistry and Physics 14, no. 6 (2014): 3047–62. http://dx.doi.org/10.5194/acp-14-3047-2014.

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Abstract. Carbonyl compounds are important intermediates in atmospheric photochemistry. To explore the relative contributions of primary and secondary carbonyl sources, carbonyls and other volatile organic compounds (VOCs) were measured at an urban site in both winter and summer in Beijing. The positive matrix factorization (PMF) model was used for source apportionment of VOCs. As VOCs undergo photochemical processes in the atmosphere, and such processes may interfere with factor identification, the relationships between the contributions of the resolved PMF factors to each non-methane hydroca
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19

Ge, Aoqi, Zhenfeng Wu, Shaoxuan Xiao, et al. "Carbonyl Compounds Observed at a Suburban Site during an Unusual Wintertime Ozone Pollution Event in Guangzhou." Atmosphere 15, no. 10 (2024): 1235. http://dx.doi.org/10.3390/atmos15101235.

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Carbonyl compounds are important oxygenated volatile organic compounds (VOCs) that play significant roles in the formation of ozone (O3) and atmospheric chemistry. This study presents comprehensive field observations of carbonyl compounds during an unusual wintertime ozone pollution event at a suburban site in Guangzhou, South China, from 19 to 28 December 2020. The aim was to investigate the characteristics and sources of carbonyls, as well as their contributions to O3 formation. Formaldehyde, acetone, and acetaldehyde were the most abundant carbonyls detected, with average concentrations of
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20

Chen, W. T., M. Shao, S. H. Lu, M. Wang, and L. M. Zeng. "Understanding primary and secondary sources of ambient carbonyl compounds in Beijing using the PMF model." Atmospheric Chemistry and Physics Discussions 13, no. 6 (2013): 15749–81. http://dx.doi.org/10.5194/acpd-13-15749-2013.

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Abstract. Carbonyls are important intermediates in atmospheric photochemistry. To determine the relative contributions of primary and secondary carbonyl sources in Beijing, carbonyls and other trace gases were measured at Peking University in winter and summer. The Positive Matrix Factorization (PMF) model was used for source apportionment. As volatile organic compounds (VOCs) will undergo photochemical processes in the atmosphere, and such processes may interfere with factors identification, the relationships between the contributions of the resolved PMF factors to each non-methane hydrocarbo
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21

Wang, Hongli, Xuan Zhang, and Zhongming Chen. "Development of DNPH/HPLC method for the measurement of carbonyl compounds in the aqueous phase: applications to laboratory simulation and field measurement." Environmental Chemistry 6, no. 5 (2009): 389. http://dx.doi.org/10.1071/en09057.

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Environmental context. Carbonyl compounds, a class of oxygenated organic matter, are crucial participants in atmospheric processes. Recently, studies have shown that the aqueous-phase processes of carbonyls have an important contribution to the formation of secondary organic aerosol (SOA), which is considered to have a significant impact on global climate change and human health. We developed the classical DNPH/HPLC method to characterise the aqueous-phase carbonyls, especially methacrolein, methyl vinyl ketone, glyoxal, and methylglyoxal, which are important precursors of SOA, in order to bet
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22

Doussin, J. F., and A. Monod. "Structure–activity relationship for the estimation of OH-oxidation rate constants of carbonyl compounds in the aqueous phase." Atmospheric Chemistry and Physics 13, no. 23 (2013): 11625–41. http://dx.doi.org/10.5194/acp-13-11625-2013.

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Abstract. In the atmosphere, one important class of reactions occurs in the aqueous phase in which organic compounds are known to undergo oxidation towards a number of radicals, among which OH radicals are the most reactive oxidants. In 2008, Monod and Doussin have proposed a new structure–activity relationship (SAR) to calculate OH-oxidation rate constants in the aqueous phase. This estimation method is based on the group-additivity principle and was until now limited to alkanes, alcohols, acids, bases and related polyfunctional compounds. In this work, the initial SAR is extended to carbonyl
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23

Li, Lu, Wenting Dai, Minxia Shen, et al. "Molecular Characteristics, Sources, and Health Risk Assessment of Gaseous Carbonyl Compounds in Residential Indoor and Outdoor Environments in a Megacity of Northwest China." Indoor Air 2023 (July 25, 2023): 1–13. http://dx.doi.org/10.1155/2023/7769354.

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Carbonyl compounds (CCs) in indoor air pose a significant threat to residents’ health and have garnered considerable attention in recent years. However, most studies have focused on low-molecular-weight carbonyl compounds (LMW-CCs) and have underestimated the impact of high-molecular-weight ones (HMW-CCs), causing a failure to comprehensively understand their effects on health. In this study, we analyzed twenty carbonyls in the indoor and outdoor air at typical residential communities in a megacity in Northwest China by using high-performance liquid chromatography (HPLC) coupled with a photodi
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24

Li, Jian, Liu Shui Yan, Chun Juan Xie, and Ling Na Li. "Diurnal Variations and Personal Exposures of Carbonyl Compounds in Different Types of Malls in Nanchang." Advanced Materials Research 726-731 (August 2013): 757–60. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.757.

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Diurnal variations and personal exposure of carbonyl compounds were investigated in four types of large shopping malls (including department store, supermarket, bookstore and furniture store) in urban district of Nanchang, China. The diurnal measurements both in the summer and winter showed that the concentrations of carbonyls exhibited a higher peak at the morning hour and a lower peak at the evening hour except for acetaldehyde, which obviously peaked at the afternoon hour in winter. The indoor concentrations of LMW carbonyl compounds were found higher than their outdoor counterparts with on
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25

Larson, G. L. "α-silyl carbonyl compounds". Pure and Applied Chemistry 62, № 10 (1990): 2021–26. http://dx.doi.org/10.1351/pac199062102021.

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26

Boechat, N., and M. Bastos. "Trifluoromethylation of Carbonyl Compounds." Current Organic Synthesis 7, no. 5 (2010): 403–13. http://dx.doi.org/10.2174/157017910792246081.

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27

Chakrabarty, Debojit, Md Munkir Hossain, R. Krishna Kumar, and Pradeeb Mathur. "Mixed chalcogen carbonyl compounds." Journal of Organometallic Chemistry 410, no. 2 (1991): 143–48. http://dx.doi.org/10.1016/0022-328x(91)80003-3.

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28

Mathur, Pradeep, Debojit Chakrabarty, and Md Munkir Hossain. "Mixed chalcogen carbonyl compounds." Journal of Organometallic Chemistry 418, no. 3 (1991): 415–20. http://dx.doi.org/10.1016/0022-328x(91)80226-a.

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29

Mathur, Pradeep, Debojit Chakrabarty, Md Munkir Hossain, and Raad S. Rashid. "Mixed chalcogen carbonyl compounds." Journal of Organometallic Chemistry 420, no. 1 (1991): 79–86. http://dx.doi.org/10.1016/0022-328x(91)86447-x.

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30

Grimshaw, James. "ChemInform Abstract: Carbonyl Compounds." ChemInform 32, no. 30 (2010): no. http://dx.doi.org/10.1002/chin.200130270.

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31

Suresh, S. Wadje* Md Rayees Ahmad Ajay S. Bamne Nitin P. Ghume Pooja M. Sontakke Sabiya K. Shaikh Pooja R.Tange Sampada S. Kolhe. "Synthesis Of Α,Β-Unsaturated Carbonyl Compound And Their Pharmacological Activities". International Journal in Pharmaceutical Sciences 2, № 4 (2024): 757–63. https://doi.org/10.5281/zenodo.10986394.

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α,β-unsaturated carbonyl  compounds are compounds consisting of two aromatic rings connected by a three-carbon α,β-unsaturated carbonyl system. Reactive α,β-unsaturated carbonyl function in unsaturated carbonyl compound  and its derivatives is the reason for its pharmacological activities Unsaturated carbonyl compound s have been reported to present various biological activities such as anti-inflammatory, antioxidant, antitubercular, antibacterial, antiviral, insecticidal, antiprotozoal, anticancer antidiabetic, etc. This review highlights the synthes
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32

Blay, Gonzalo, José Pedro, and Amparo Sanz-Marco. "Conjugate Alkynylation of Electrophilic Double Bonds. From Regioselectivity to Enantioselectivity." Synthesis 50, no. 17 (2018): 3281–306. http://dx.doi.org/10.1055/s-0037-1610182.

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This review surveys the historical efforts addressed toward the development of the conjugate alkynylation reaction. The regio- and enantioselective conjugate alkynylation of electron-deficient double bonds, most commonly unsaturated carbonyl compounds, has been an elusive reaction for a long time. Intensive research during the last decades has resulted in the identification of a number of effective reagents and catalysts to perform this reaction. Non-stereoselective conjugate alkynylation of unsaturated carbonyl compounds was first achieved by using preformed alkynyl organometallics and later
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33

Duong, Huy Huu, Thu Huong Minh Dang, and Hien Thi To. "Partition of the carbonyl compounds between the indoor and outdoor air at residental areas in District 5, Ho Chi Minh City." Science and Technology Development Journal 19, no. 2 (2016): 94–106. http://dx.doi.org/10.32508/stdj.v19i2.807.

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Indoor air pollution, especially for the air toxic compounds such as carbonyls, is the most common issue in large cities. Indoor and outdoor air samples were simultaneously collected at six homes to estimate the pollution levels of carbonyl compounds at some points in the residential area, Ho Chi Minh City. The gaseous carbonyls were measured in the period of August and September, 2011 corresponding to the rainy season. The results showed that formaldehyde, acetaldehyde and acetone were the most abundant carbonyls in both indoor and outdoor air, accounted 80 % of the interested compounds, foll
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34

Miyata, Toshio, Satoshi Sugiyama, Akira Saito, and Kiyoshi Kurokawa. "Reactive carbonyl compounds related uremic toxicity ("carbonyl stress")." Kidney International 59, s78 (2001): 25–31. http://dx.doi.org/10.1046/j.1523-1755.2001.07833.x.

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Miyata, Toshio, Satoshi Sugiyama, Akira Saito, and Kiyoshi Kurokawa. "Reactive carbonyl compounds related uremic toxicity (“carbonyl stress”)." Kidney International 59 (February 2001): S25—S31. http://dx.doi.org/10.1046/j.1523-1755.2001.59780025.x.

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36

Wang, Zhiqi, Sai Li, Yu Cao, et al. "Oxidative Stress and Carbonyl Lesions in Ulcerative Colitis and Associated Colorectal Cancer." Oxidative Medicine and Cellular Longevity 2016 (2016): 1–15. http://dx.doi.org/10.1155/2016/9875298.

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Oxidative stress has long been known as a pathogenic factor of ulcerative colitis (UC) and colitis-associated colorectal cancer (CAC), but the effects of secondary carbonyl lesions receive less emphasis. In inflammatory conditions, reactive oxygen species (ROS), such as superoxide anion free radical (O2∙-), hydrogen peroxide (H2O2), and hydroxyl radical (HO∙), are produced at high levels and accumulated to cause oxidative stress (OS). In oxidative status, accumulated ROS can cause protein dysfunction and DNA damage, leading to gene mutations and cell death. Accumulated ROS could also act as ch
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37

Gao, Xiaoshuai, Xin Zhang, Yan Nie, et al. "Analytical Methods for Atmospheric Carbonyl Compounds: A Review." Atmosphere 16, no. 1 (2025): 107. https://doi.org/10.3390/atmos16010107.

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Atmospheric carbonyl compounds have significant impacts on the atmospheric environment and human health, making the selection of appropriate analytical techniques crucial for accurately detecting these compounds in specific environments. Based on extensive literature research, this study summarized the development history, relevant features, and applicable scenarios of the main analytical techniques for atmospheric carbonyl compounds; pointed out the main problems and challenges in this field; and discussed the needs and prospects of future research and application. It was found that the direc
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38

Nurbekova, Z. "Toxicity of reactive carbonyl compounds to plants." BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series 136, no. 3 (2021): 86–92. http://dx.doi.org/10.32523/2616-7034-2021-136-3-86-92.

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In plants, environmental stresses result in oxidative stress, lipid peroxidation and the generation of reactive carbonyl aldehydes. Reactive carbonyl aldehydes are downstream products of reactive oxygen species which can be described as critical cell-damaging agents in plants under various environmental stresses. In this paper toxicity of reactive carbonyl aldehydes and its generation under stress conditions are discussed. Moreover, involvement of reactive carbonyl aldehydes in stress- induced damage to plants is demonstrated. Toxic effect of reactive aldehydes such as acrolein, malondialdehyd
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Alwan, Shaker M., Shayma L. Abdulhadi, and Amera Abbas. "Synthesis of Levofloxacin Derivatives with some Amines and their Complexes with Copper(II) Salts and Evaluation of their Biological Activity." International Journal of Drug Delivery Technology 10, no. 03 (2020): 408–13. http://dx.doi.org/10.25258/ijddt.10.3.18.

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Levofloxacin belongs to the fluoroquinolone family; it is a potent broad-spectrum bactericidal agent. The pharmacophore required for significant antibacterial activity is the C-3 carboxylic acid group and the 4-pyridine ring with the C-4 carbonyl group, into which binding to the DNA bases occur. In this work, we tried to show that by masking the carboxyl group through amide formation using certain amines to form levofloxacin carboxamides, an interesting activity is kept. Levofloxacin carboxamides on the C-3 group were prepared, followed by the formation of their copper complexes. The target co
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40

Yu, Junting, Zhilei Zhou, Xibiao Xu, et al. "Differentiating Huangjiu with Varying Sugar Contents from Different Regions Based on Targeted Metabolomics Analyses of Volatile Carbonyl Compounds." Foods 12, no. 7 (2023): 1455. http://dx.doi.org/10.3390/foods12071455.

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Huangjiu is one of the oldest alcoholic beverages in the world. It is usually made by fermenting grains, and Qu is used as a saccharifying and fermenting agent. In this study, we identified differential carbonyl compounds in Huangjiu with varying sugar contents from different regions. First, we developed and validated a detection method for volatile carbonyl compounds in Huangjiu, and for optimal extraction, 5 mL of Huangjiu and 1.3 g/L of O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) were incubated at 45 °C for 5 min before extracting the volatile carbonyl compounds at 45
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41

Plackal George, Blassan, Parimelazhagan Thangaraj, Cheruthazhakkatt Sulaiman, Shanmughavel Piramanayagam, and Sathish Kumar Ramaswamy. "Bioassay Directed Isolation and Biological Evaluation of Compounds Isolated fromRubus fairholmianusGard." BioMed Research International 2014 (2014): 1–15. http://dx.doi.org/10.1155/2014/204340.

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Thein vitroandin silicoanalysis ofRubus fairholmianusacetone extract for antioxidant, antiproliferative, and anti-inflammatory activity led to the isolation of six compounds. Amongst all the six isolated compounds tested, 1-(2-hydroxyphenyl)-4-methylpentan-1-one (compound1) and 2-[(3-methylbutoxy) carbonyl] benzoic acid (compound2) were found to be more active in inhibiting BRCA and COX target proteins, which also showed the better results for DPPH and ABTS radical scavenging assays. The promising results of this investigation emphasize the importance of usingR. fairholmianusin the treatment o
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42

Kuninobu, Yoichiro, Yuta Nishina, Atsushi Kawata, Makoto Shouho, and Kazuhiko Takai. "Rhenium-catalyzed synthesis of indene derivatives via C-H bond activation." Pure and Applied Chemistry 80, no. 5 (2008): 1149–54. http://dx.doi.org/10.1351/pac200880051149.

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Rhenium complex, [ReBr(CO)3(thf)]2-catalyzed reactions between aromatic imines and either acetylenes or α,β-unsaturated carbonyl compounds gave indene derivatives in good to excellent yields. These reactions proceed via C-H bond activation, insertion of acetylenes or α,β-unsaturated carbonyl compounds, intramolecular nucleophilic cyclization, and reductive elimination. Indene derivatives were also obtained from aromatic ketones and α,β-unsaturated carbonyl compounds in the presence of catalytic amounts of the rhenium complex and p-anisidine. Sequential ruthenium-catalyzed hydroamination of aro
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43

Battistini, Lucia, Claudio Curti, Gloria Rassu, Andrea Sartori, and Franca Zanardi. "Enolizable Alkylidene Heterocyclic and Carbocyclic Carbonyl Systems­: Valuable Vinylogous Donor Substrates in Synthesis." Synthesis 49, no. 11 (2017): 2297–336. http://dx.doi.org/10.1055/s-0036-1589487.

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Controlled vinylogous carbon–carbon bond-forming reactions are useful options for providing the selective remote functionalization of conjugated carbonyl substrates. Remotely enolizable alkylidene heterocyclic and carbocyclic carbonyl compounds are pro-nucleophilic substrates that may be engaged in highly valuable chemical transformations. This review emphasizes the merits of these recently discovered vinylogous donors in the chemo-, regio- and stereoselective synthesis of many functionality-rich products.1 Introduction2 Alkylidene Oxindoles3 Alkylidene Pyrazolinones4 Alkylidene Furanones5 Alk
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44

Liu, Xingyun, Wei Xing, Zhaoyang Xu, et al. "Assessing Impacts of Additives on Particulate Matter and Volatile Organic Compounds Produced from the Grilling of Meat." Foods 11, no. 6 (2022): 833. http://dx.doi.org/10.3390/foods11060833.

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Cooking fumes are an important source of volatile organic compounds (VOCs), particulate matter (PM), and carbonyl compounds. The additive is wildly applied in grilling meat for flavor improvement. However, the effects of additives on cooking fumes emissions, such as volatile organic compounds (VOCs), particulate matter (PM), and carbonyl compounds, in meat grilling have not been studied. The impact of four additives, including white pepper, salt, garlic powder, and compound marinade, on the emission characteristics of cooking fumes from the grilling meat was investigated. The concentrations of
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45

Cheng, Jie, Jianwei Shao, Yifei Ye, et al. "Microfluidic Preconcentration Chip with Self-Assembled Chemical Modified Surface for Trace Carbonyl Compounds Detection." Sensors 18, no. 12 (2018): 4402. http://dx.doi.org/10.3390/s18124402.

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Carbonyl compounds in water sources are typical characteristic pollutants, which are important indicators in the health risk assessment of water quality. Commonly used analytical chemistry methods face issues such as complex operations, low sensitivity, and long analysis times. Here, we report a silicon microfluidic device based on click chemical surface modification that was engineered to achieve rapid, convenient and efficient capture of trace level carbonyl compounds in liquid solvent. The micro pillar arrays of the chip and microfluidic channels were designed under the basis of finite elem
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46

Chen, Jin Y., Alexa Canchola, and Ying-Hsuan Lin. "Carbonyl Composition and Electrophilicity in Vaping Emissions of Flavored and Unflavored E-Liquids." Toxics 9, no. 12 (2021): 345. http://dx.doi.org/10.3390/toxics9120345.

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It has been demonstrated that propylene glycol (PG), vegetable glycerin (VG), and flavoring chemicals can thermally degrade to form carbonyls during vaping, but less is known about carbonyl emissions produced by transformation of flavoring chemicals and the interactive effects among e-liquid constituents. This study characterized carbonyl composition and levels in vaping emissions of PG-VG (e-liquid base solvents) and four e-liquid formulations flavored with trans-2-hexenol, benzyl alcohol, l-(-)-menthol, or linalool. Utilizing gas chromatography (GC)- and liquid chromatography (LC)-mass spect
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Murtinho, Dina, and Maria Serra. "Organocatalysed Cyanations of Carbonyl Compounds." Current Organocatalysis 1, no. 2 (2014): 87–106. http://dx.doi.org/10.2174/2213337201666140521180149.

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48

Dey, Shuchismita. "Nulceophilic Displacements at Carbonyl Compounds." Science Journal of Chemistry 3, no. 3 (2015): 57. http://dx.doi.org/10.11648/j.sjc.20150303.14.

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49

Talybov, G. M. "Epoxidation of unsaturated carbonyl compounds." Russian Journal of Organic Chemistry 53, no. 11 (2017): 1742–45. http://dx.doi.org/10.1134/s1070428017110239.

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Comasseto, João V., Wai L. Lo, and Nicola Petragnani. "Carbonyl transposition on organoselenium compounds." Tetrahedron 53, no. 22 (1997): 7445–60. http://dx.doi.org/10.1016/s0040-4020(97)00454-7.

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