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Journal articles on the topic 'Ketone hydrazones'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

KushalNath Mishra, Shambaditya Goswami, Kumudhavalli M.V, et al. "Hydrazones and their metal complexes: A short review on their biological potentia." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 1440–47. http://dx.doi.org/10.26452/ijrps.v11ispl4.4319.

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Hydrazones belong to complexes are beneficial in different fields for their essential role in the development of a range of stable complexes in the coordination chemistry. Different researchers have reported the various medicinal properties of hydrazones. Hydrazone and its metal complexes are useful for the detection of some organic components from pharmaceutical formulations. These metallic compounds act as a catalyst for conducting various chemical reactions and help in making different chemical complexes that are effective against bacteria, fungi, and many other microbes. Aromatic hydrazone

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2

Atici, Oya (Galioǧlu). "Decomposition of cyclohexyl phenyl ketone via their polymeric sulfonyl hydrazones and tosyl hydrazones." Reactive and Functional Polymers 34, no. 2-3 (1997): 175–82. http://dx.doi.org/10.1016/s1381-5148(97)00085-0.

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3

Fawzy, Ahmed, Saleh A. Ahmed, Ismail I. Althagafi, Moataz H. Morad, and Khalid S. Khairou. "Kinetics and Mechanistic Study of Permanganate Oxidation of Fluorenone Hydrazone in Alkaline Medium." Advances in Physical Chemistry 2016 (July 25, 2016): 1–9. http://dx.doi.org/10.1155/2016/4526578.

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The oxidation kinetics of fluorenone hydrazone (FH) using potassium permanganate in alkaline medium were measured at a constant ionic strength of 0.1 mol dm−3 and at 25°C using UV/VIS spectrophotometer. A first-order kinetics has been monitored in the reaction of FH with respect to [permanganate]. Less-than-unit order dependence of the reaction on [FH] and [OH−] was revealed. No pronounced effect on the reaction rate by increasing ionic strength was recorded. Intervention of free radicals was observed in the reaction. The reaction mechanism describing the kinetic results was illustrated which

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4

Xiang, Jiahong, Di Wen, Junbo Zhao, Ping Xiang, Yan Shi, and Chunling Ma. "Study of the Metabolic Profiles of “Indazole-3-Carboxamide” and “Isatin Acyl Hydrazone” (OXIZID) Synthetic Cannabinoids in a Human Liver Microsome Model Using UHPLC-QE Orbitrap MS." Metabolites 13, no. 4 (2023): 576. http://dx.doi.org/10.3390/metabo13040576.

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Unregulated core structures, “isatin acyl hydrazones” (OXIZIDs), have quietly appeared on the market since China legislated to ban seven general core scaffolds of synthetic cannabinoids (SCs). The fast evolution of SCs presents clinical and forensic toxicologists with challenges. Due to extensive metabolism, the parent compounds are barely detectable in urine. Therefore, studies on the metabolism of SCs are essential to facilitate their detection in biological matrices. The aim of the present study was to elucidate the metabolism of two cores, “indazole-3-carboxamide” (e.g., ADB-BUTINACA) and

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5

Okuma, Kentaro, Yuxuan Qu, Aoi Suetome, and Noriyoshi Nagahora. "Reaction of ketone hydrazones with TeCl4: isolation and reactions of novel divinyl telluride." Organic & Biomolecular Chemistry 18, no. 24 (2020): 4583–89. http://dx.doi.org/10.1039/d0ob00782j.

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The reaction of acetophenone hydrazones with TeCl<sub>4</sub> in the presence of DBU gave divinyl tellurides. The reaction of divinyl tellurides with bromine or benzyne afforded the corresponding tellurium dibromides or (E)-2-alkenyl tellurides.

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6

VIDYA, JOSHI, та K. SHARMA R. "Diazotisation Rearrangement of Tosylhydrazones of ortho- and meta-Substituted-benzophenones and α-Substituted-acetophenones (Synthesis of Anilides)". Journal of Indian Chemical Society Vol. 65, Aug 1988 (1988): 564–66. https://doi.org/10.5281/zenodo.6042085.

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Institute of Science, 15, Madam Cama Road, Bombay-400 032 <em>Manuscript received 25 January 1988, accepted 28 May 2988</em> <em>Ortho</em>- and <em>meta</em>-substituted-benzophenones (1a —g) and substituted-acetophenones (1h — i) were converted into tosylhydrazones (2a— i) by reacting with<em> p</em>-toluenesulphonylhydrazide. Conversion of 2a — i to the anilides (3a —i) was effected with the reagents H<sub>2</sub>SO<sub>4</sub> and NaNO<sub>2</sub>, and was found to be as facile as In case of the <em>para</em>-substitutedbenzophenone hydrazones.

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7

Nurkenov, O. A., A. Zh Mendibayeva, S. D. Fazylov, et al. "Synthesis of quaternary ammonium saltsisonicotinic and nicotinic hydrazones acids and their anti-inflammatory activity." Chemical Journal of Kazakhstan, no. 1 (March 15, 2024): 154–66. http://dx.doi.org/10.51580/2024-1.2710-1185.15.

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Currently, the number of infections caused by strains of bacteria that are not sensitive to antibiotics and antiseptics is growing worldwide. A similar increase in bacterial resistance is observed for both nosocomial infections and community-acquired human-to-human infections. An important task for chemists and pharmacologists is the synthesis of new compounds and the establishment of a structure-bioactivity relationship. The purpose of this work is to study the effect of the structure of quaternary ammonium derivatives of hydrazones of isonicotinic and nicotinic acids on the manifestation of

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8

Baccolini, Graziano, and Michele Gianelli. "N-alkenyl-3,5-pyrazolidinediones from ketone hydrazones, PCl3 and malonic acid." Tetrahedron 51, no. 34 (1995): 9487–92. http://dx.doi.org/10.1016/0040-4020(95)00550-r.

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9

LEE, D. W., Y. S. PARK, and W. K. LEE. "ChemInform Abstract: Oxidation of Aromatic Ketone Hydrazones by Thianthrene Cation Radical." ChemInform 28, no. 15 (2010): no. http://dx.doi.org/10.1002/chin.199715056.

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10

Ienaşcu, Ioana, Alfa Lupea, Iuliana Popescu, Mirabela Pădure, and Alina Zamfir. "The synthesis and characterization of some novel 5-chloro-2-(substituted alkoxy)-N-phenylbenzamide derivatives." Journal of the Serbian Chemical Society 74, no. 8-9 (2009): 847–55. http://dx.doi.org/10.2298/jsc0909847i.

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To obtain biologically active compounds, the synthesis of some new derivatives with an o-hydroxybenzamide structure was performed. The ethyl esters 4-6 were obtained by the reaction of 5-chloro-2-hydroxy-N-phenylbenzamide and chloro-substituted acid ethyl esters 1-3 in ethyl methyl ketone. The obtained ethyl esters were condensed with hydrazine yielding the hydrazides 7-8. The hydrazones 11-14 were obtained by the reaction of the hydrazides and the chloro-substituted benzaldehydes 9-10. All the newly synthesized compounds were characterized by FTIR, 1H-NMR, 13C-NMR, MS and elemental analyses.

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11

Gao, Lei, and Zheng Li. "Synthesis of aromatic terminal allenes and aliphatic terminal alkynes from hydrazones using calcium carbide as an acetylene source." Organic Chemistry Frontiers 7, no. 4 (2020): 702–8. http://dx.doi.org/10.1039/c9qo01400d.

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A simple method for the selective synthesis of aromatic terminal allenes and aliphatic terminal alkynes from the reactions of calcium carbide with ketone and aldehyde p-tosylhydrazones using copper as a mediator is described.

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12

Ryu, Ilhyong, Go-hei Yamamura, Sohei Omura, Satoshi Minakata та Mitsuo Komatsu. "Reactions of ketone dilithio α,β-dianions with imines and hydrazones: an anionic access to γ-amino ketones". Tetrahedron Letters 47, № 14 (2006): 2283–86. http://dx.doi.org/10.1016/j.tetlet.2006.02.026.

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13

Enders, Dieter, Thomas Hundertmark та Ryszard Lazny. "Copper(II) Chloride Mediated Racemization-Free Hydrolysis of α-Alkylated Ketone Samp-Hydrazones". Synthetic Communications 29, № 1 (1999): 27–33. http://dx.doi.org/10.1080/00397919908085731.

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14

BACCOLINI, G., and M. GIANELLI. "ChemInform Abstract: N-Alkenyl-3,5-pyrazolidinediones from Ketone Hydrazones, PCl3 and Malonic Acid." ChemInform 26, no. 51 (2010): no. http://dx.doi.org/10.1002/chin.199551133.

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15

Bataille, Patricia, Michel Paterne, and Eric Brown. "Diastereoselective LiAlH4 reduction of chiral ketone hydrazones derived from (R)-(–)-2-aminobutan-1-ol." Tetrahedron: Asymmetry 11, no. 5 (2000): 1165–81. http://dx.doi.org/10.1016/s0957-4166(00)00044-6.

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16

Ulven, Trond, and Per H. J. Carlsen. "A Method for the Selective Hydrolysis of Ketone Hydrazones in the Presence of Acetals." European Journal of Organic Chemistry 2000, no. 24 (2000): 3971–72. http://dx.doi.org/10.1002/1099-0690(200012)2000:24<3971::aid-ejoc3971>3.0.co;2-n.

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17

Li, Xianwei, Xiaohang Liu, Huoji Chen, Wanqing Wu, Chaorong Qi, and Huanfeng Jiang. "Copper-Catalyzed Aerobic Oxidative Transformation of Ketone-DerivedN-Tosyl Hydrazones: An Entry to Alkynes." Angewandte Chemie International Edition 53, no. 52 (2014): 14485–89. http://dx.doi.org/10.1002/anie.201405058.

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18

Li, Xianwei, Xiaohang Liu, Huoji Chen, Wanqing Wu, Chaorong Qi, and Huanfeng Jiang. "Copper-Catalyzed Aerobic Oxidative Transformation of Ketone-DerivedN-Tosyl Hydrazones: An Entry to Alkynes." Angewandte Chemie 126, no. 52 (2014): 14713–17. http://dx.doi.org/10.1002/ange.201405058.

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19

Jiang, Gan, Yang Lin, Mingzhong Cai, and Hong Zhao. "Recyclable Heterogeneous Copper(II)-Catalyzed Oxidative Cyclization of 2-Pyridine Ketone Hydrazones Towards [1,2,3]Triazolo[1,5-a]pyridines." Synthesis 51, no. 23 (2019): 4487–97. http://dx.doi.org/10.1055/s-0037-1610726.

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The heterogeneous copper(II)-catalyzed oxidative cyclization of 2-pyridine ketone hydrazones was achieved in ethyl acetate at room temperature in the presence of an MCM-41-anchored bidentate 2-aminoethylamino copper(II) catalyst [MCM-41-2N-Cu(OAc)2], in the presence of air as the oxidant, yielding a wide variety of [1,2,3]triazolo[1,5-a]pyridines in mostly good to high yields. The present method was also applied to the direct one-pot synthesis of [1,2,3]triazolo[1,5-a]pyridines from 2-acylpyridine derivatives and hydrazine monohydrate. Importantly, this supported copper(II) catalyst could be c

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20

Qiao, Jun, Kai Zheng, Zhiwei Lin та ін. "Heterogeneous Chitosan@copper Catalyzed Selective C(sp3)–H Sulfonylation of Ketone Hydrazones with Sodium Sulfinates: Direct Access to β-Ketosulfones". Catalysts 13, № 4 (2023): 726. http://dx.doi.org/10.3390/catal13040726.

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The exploration of inexpensive and stable heterogeneous catalysts for C–S coupling reactions remains a challenging issue. Herein, we successfully prepared a new biomass-derived copper catalyst and applied it to the selective C(sp3)–H-directed sulfonylation of ketone hydrazones with commercial sodium sulfinates. The catalyst was characterized using different spectroscopic and microscopic techniques. Importantly, the prepared biomass-supported Cu catalyst catalyzed the C–S coupling reaction with considerably high activity. A variety of aryl and alkyl sulfinates were converted to the correspondin

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21

Notte, Gregory T., and James L. Leighton. "A New Silicon Lewis Acid for Highly Enantioselective Mannich Reactions of Aliphatic Ketone-Derived Hydrazones." Journal of the American Chemical Society 130, no. 21 (2008): 6676–77. http://dx.doi.org/10.1021/ja800830h.

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22

Enders, Dieter, Thomas Hundertmark та Ryszard Lazny. "ChemInform Abstract: Copper(II) Chloride Mediated Racemization-Free Hydrolysis of α-Alkylated Ketone SAMP-Hydrazones." ChemInform 30, № 22 (2010): no. http://dx.doi.org/10.1002/chin.199922074.

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23

Sihag, Monika, and Rinku Soni. "HTIB as an Efficient and Convenient Reagent for Oxidative Cleavage of C=N in Pyrimidinyl Hydrazones." Indian Journal of Heterocyclic Chemistry 33, no. 04 (2023): 393. http://dx.doi.org/10.59467/ijhc.2023.33.393.

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This study is aimed to explore the efficiency of [hydroxy(tosyloxy)iodo]benzene (HTIB) in the oxidative cleavage of some pyrimidinyl hydrazones. The protocol involves stirring the hydrazone derivatives with HTIB in dichloromethane at room temperature. The oxidative cleavage of C = N in pyrimidinyl hydrazones regenerated parent ketones in high yields. The methodology has advantage of preventing over oxidation of carbonyl functionality.

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24

Enders, Dieter, Thomas Hundertmark, and Ryszard Lazny. "Mild, Racemization Free Cleavage of Ketone SAMP-Hydrazones with Oxalic Acid - Recycling of the Chiral Auxiliary." Synlett 1998, no. 7 (1998): 721–22. http://dx.doi.org/10.1055/s-1998-1765.

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25

Haddad, Nizar, Bo Qu, Sonia Rodriguez, et al. "Catalytic asymmetric hydrogenation of heterocyclic ketone-derived hydrazones, pronounced solvent effect on the inversion of configuration." Tetrahedron Letters 52, no. 29 (2011): 3718–22. http://dx.doi.org/10.1016/j.tetlet.2011.05.017.

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26

Okuma, Kentaro, Toshiharu Izaki, Kento Kubo, Kosei Shioji та Yoshinobu Yokomori. "Reaction of Ketone Hydrazones with Diselenium Dihalides: Simple Synthesis of Δ3-1,3,4-Selenadiazolines and 2,5-Diarylselenophenes". Bulletin of the Chemical Society of Japan 78, № 6 (2005): 1121–26. http://dx.doi.org/10.1246/bcsj.78.1121.

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27

MORI, Hisakazu, Kaori SAKAMOTO, Sachie MASHITO, Yohko MATSUOKA, Mika MATSUBAYASHI, and Kazue SAKAI. "Aerial Oxidation of Some 2-Pyridyl Ketone Hydrazones Catalyzed by Cu2+. Physical Properties of Reaction Products." CHEMICAL & PHARMACEUTICAL BULLETIN 41, no. 11 (1993): 1944–47. http://dx.doi.org/10.1248/cpb.41.1944.

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28

Bataille, Patricia, Michel Paterne, and Eric Brown. "ChemInform Abstract: Diastereoselective LiAlH4 Reduction of Chiral Ketone Hydrazones Derived from (R)-(-)-2-Aminobutan-1-ol." ChemInform 31, no. 28 (2010): no. http://dx.doi.org/10.1002/chin.200028080.

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29

Minin, Yuriy V., Julia G. Klys, Julia B. Burlaka, et al. "Indices of proteins’ and lipids’ peroxidation and the state of antioxidant system in patients with snoring." OTORHINOLARYNGOLOGY, no. 6(2) 2019 (March 30, 2020): 64–73. http://dx.doi.org/10.37219/2528-8253-2019-6-64.

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Aim: to investigate the intensity of proteins and lipids peroxidation, the state of the antioxidant system and biochemical indices of endogenous intoxication in patients with snoring. Materials and Methods: Blood serum of 20 patients with snoring and 19 healthy persons without any manifestation of respiratory complications at sleeping were studied. All patients were divided into two groups. Group I included 10 patients with moderate manifestation of snoring, and group II with the hard one. Results: An increase of the proteins’ oxidative modifications in patients with snoring without obstructiv

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30

Kidonakis, Marios, та Manolis Stratakis. "Reduction of the Diazo Functionality of α-Diazocarbonyl Compounds into a Methylene Group by NH3BH3 or NaBH4 Catalyzed by Au Nanoparticles". Nanomaterials 11, № 1 (2021): 248. http://dx.doi.org/10.3390/nano11010248.

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Supported Au nanoparticles on TiO2 (1 mol%) are capable of catalyzing the reduction of the carbene-like diazo functionality of α-diazocarbonyl compounds into a methylene group [C=(N2) → CH2] by NH3BH3 or NaBH4 in methanol as solvent. The Au-catalyzed reduction that occurs within a few minutes at room temperature formally requires one hydride equivalent (B-H) and one proton that originates from the protic solvent. This pathway is in contrast to the Pt/CeO2-catalyzed reaction of α-diazocarbonyl compounds with NH3BH3 in methanol, which leads to the corresponding hydrazones instead. Under our stoi

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31

Li, Xianwei, Xiaohang Liu, Huoji Chen, Wanqing Wu, Chaorong Qi, and Huanfeng Jiang. "ChemInform Abstract: Copper-Catalyzed Aerobic Oxidative Transformation of Ketone-Derived N-Tosyl Hydrazones: An Entry to Alkynes." ChemInform 46, no. 19 (2015): no. http://dx.doi.org/10.1002/chin.201519088.

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32

Enders, Dieter, Elena Díez, Rosario Fernández та ін. "Electrophilic and Nucleophilic Reactivities of the Azomethine Carbon of SAMP-Hydrazones: Stereoselective Synthesis of γ-Amino Ketone Derivatives". Journal of Organic Chemistry 64, № 17 (1999): 6329–36. http://dx.doi.org/10.1021/jo990503r.

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33

ENDERS, D., T. HUNDERTMARK, and R. LAZNY. "ChemInform Abstract: Mild, Racemization-Free Cleavage of Ketone SAMP-Hydrazones with Oxalic Acid - Recycling of the Chiral Auxiliary." ChemInform 29, no. 43 (2010): no. http://dx.doi.org/10.1002/chin.199843073.

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34

Smith, Amos, Zhuqing Liu, and Vladimir Simov. "An Efficient Protocol for the Oxidative Hydrolysis of Ketone SAMP Hydrazones Employing SeO2 and H2O2 under Buffered (pH 7) Conditions." Synlett 2009, no. 19 (2009): 3131–34. http://dx.doi.org/10.1055/s-0029-1218352.

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35

Bakir, Mohammed, Mark W. Lawrence, Peter Nelson, and M. Bohari Yamin. "Catalytic C–C cross-coupling and hydrogen evolution by two Pd(II)-complexes of di-2-pyridyl ketone benzoyl hydrazones." Journal of Coordination Chemistry 72, no. 13 (2019): 2261–78. http://dx.doi.org/10.1080/00958972.2019.1645329.

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36

Enders, Dieter, Elena Diez, Rosario Fernandez та ін. "ChemInform Abstract: Electrophilic and Nucleophilic Reactivities of the Azomethine Carbon of SAMP-Hydrazones: Stereoselective Synthesis of γ-Amino Ketone Derivatives." ChemInform 31, № 1 (2010): no. http://dx.doi.org/10.1002/chin.200001148.

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37

Kpoviessi, Bénédicta Kpadonou, Bardieu Atchadé, Basile Goueti, et al. "Synthesis, Spectrometrical Characterization and Pharmacological Properties of Six Substituted Hydrazones with Carbonyl Compounds." Chemical Science International Journal 34, no. 2 (2025): 11–24. https://doi.org/10.9734/csji/2025/v34i2953.

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Hydrazones are molecules that prevent the growth of several microbial and parasitic strains by inhibited the replication of DNA sequences due to their chelating properties of metal ions. They are well recognized for Antiparasitic, Antimicrobial, Antibacterial, Antiviral, Antitumoral, Antimalarial and Anticonvulsive activities. The aim of the current study is to synthesized novel substituted hydrazones of ketones and aromatic aldehydes and to study their antiparasitic activities against Trypanosoma brucei brucei parasite. Synthesized hydrazone derivatives have been confirmed by elemental analys

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38

Kaur, Aneet Kamal, Renu Bala, Poonam Kumari, Sumit Sood, and Karan Singh. "Microwave Assisted Vilsmeier-Haack Reaction on Substituted Cyclohexanone Hydrazones: Synthesis of Novel 4,5,6,7-Tetrahydroindazole Derivatives." Letters in Organic Chemistry 16, no. 3 (2019): 170–75. http://dx.doi.org/10.2174/1570178615666180917101637.

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Vilsmeier-Haack reaction is one of the most important chemical reactions used for formylation of electron-rich arens. Even though Vilsmeier-Haack reaction was studied on a wide variety of hydrazones of enolizable ketones, literature lacks the examples of the use of 4-substituted cyclohexanones as a substrate. The cyclization potential of hydrazones of cyclic keto compounds is still interested topic of investigation. In the present study, the reaction of various hydrazines with 4-substituted cyclohexanones was proceeded and the resulted hydrazones in crude form were treated with Vilsmeier- Haac

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39

Mack, H. Michael, Everette A. Davis, Babak Kadkhodayan, Richard A. Taylor, Dean C. Duncan, and Charles F. Beam. "The preparation of quinolines and related fused-ring heterocycles from the dianions of benzoylacetone, certain cyclic ketone oximes, or certain substituted hydrazones." Journal of Heterocyclic Chemistry 24, no. 6 (1987): 1733–39. http://dx.doi.org/10.1002/jhet.5570240645.

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40

Sri, Navya. "Synthesis and Evaluation of Hydrazones." Clinical and Medical Research and Studies 3, no. 1 (2024): 1–7. https://doi.org/10.59468/2836-8525/038.

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Hydrazones are a class of organic compounds with the structure R1R2C=NNH2. They are related to ketones and aldehydes by the replacement of the oxygen with the NNH2 functional group. They are formed usually by the action of hydrazine on ketones or aldehydes.

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41

Cardenas, Diego J., and Antonio M. Echavarren. "Selectivity in the Aliphatic Palladation of Ketone Hydrazones. An Example of Palladium-Promoted Intramolecular Addition of a N,N-Dimethylhydrazone to an Alkene." Organometallics 14, no. 9 (1995): 4427–30. http://dx.doi.org/10.1021/om00009a056.

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42

Krátký, Martin, Katarína Svrčková, Quynh Anh Vu, Šárka Štěpánková, and Jarmila Vinšová. "Hydrazones of 4-(Trifluoromethyl)benzohydrazide as New Inhibitors of Acetyl- and Butyrylcholinesterase." Molecules 26, no. 4 (2021): 989. http://dx.doi.org/10.3390/molecules26040989.

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Based on the broad spectrum of biological activity of hydrazide–hydrazones, trifluoromethyl compounds, and clinical usage of cholinesterase inhibitors, we investigated hydrazones obtained from 4-(trifluoromethyl)benzohydrazide and various benzaldehydes or aliphatic ketones as potential inhibitors of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). They were evaluated using Ellman’s spectrophotometric method. The hydrazide–hydrazones produced a dual inhibition of both cholinesterase enzymes with IC50 values of 46.8–137.7 µM and 19.1–881.1 µM for AChE and BuChE, respectively. The m

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43

Dammene Debbih, Ouafa, Assia Sid, Rafika Bouchene, Sofiane Bouacida, Wissam Mazouz, and Noureddine Gherraf. "Two hydrazones derived from 1-aryl-3-(p-substituted phenyl)prop-2-en-1-one: synthesis, crystal structure, Hirshfeld surface analysis andin vitrobiological properties." Acta Crystallographica Section C Structural Chemistry 74, no. 6 (2018): 703–14. http://dx.doi.org/10.1107/s2053229618006812.

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Two chalcones were synthesized by the aldolic condensation of enolizable aromatic ketones with substituted benzaldehydes under Claisen–Schmidt reaction conditions and then treated with 2,4-dinitrophenylhydrazine to yield their corresponding hydrazones. The two (E,Z)-2,4-dinitrophenylhydrazone structures, namely (Z)-1-(2,4-dinitrophenyl)-2-[(E)-3-(4-methylphenyl)-1-phenylallylidene]hydrazine, C22H18N4O4, (H1), and (Z)-1-[(E)-3-(4-chlorophenyl)-1-(naphthalen-1-yl)allylidene]-2-(2,4-dinitrophenyl)hydrazine, C25H17ClN4O4, (H2), were isolated by recrystallization and characterized by FT–IR, UV–Vis,

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44

Al-Humaidi, Jehan Y., Mohamed G. Badrey, Ashraf A. Aly, et al. "Evaluation of the Binding Relationship of the RdRp Enzyme to Novel Thiazole/Acid Hydrazone Hybrids Obtainable through Green Synthetic Procedure." Polymers 14, no. 15 (2022): 3160. http://dx.doi.org/10.3390/polym14153160.

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The viral RNA-dependent RNA polymerase (RdRp) complex is used by SARS-CoV-2 for genome replication and transcription, making RdRp an interesting target for developing the antiviral treatment. Hence the current work is concerned with the green synthesis, characterization and docking study with the RdRp enzyme of the series of novel and diverse hydrazones and pyrazoles. 4-Methyl-2-(2-(1-phenylethylidene)hydrazineyl)thiazole-5-carbohydrazide was prepared and then condensed with different carbonyl compounds (aldehydes and ketones either carbocyclic aromatic or heterocyclic) afforded the correspond

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45

Alberca, Saúl, Esteban Matador, Javier Iglesias-Sigüenza та ін. "Asymmetric cross-aldol reactions of α-keto hydrazones and α,β-unsaturated γ-keto hydrazones with trifluoromethyl ketones". Chemical Communications 57, № 89 (2021): 11835–38. http://dx.doi.org/10.1039/d1cc05014a.

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Asymmetric cross-aldol reactions of α-keto hydrazones and α,β-unsaturated γ-keto hydrazones with trifluoromethyl ketones afford easy-to-functionalize tertiary trifluoromethyl alcohols with high enantioselectivity.

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46

Dong, Junyang, Yufeng Liu, Jianfeng Hu, et al. "Synthesis of Ferrocenyl-Based Unsymmetrical Azines via a Simple Reaction of Aldehydes with Ketone-Derived N-Tosyl Hydrazones and the Evaluation of the Extent of Conjugation in the Molecule." Organometallics 36, no. 17 (2017): 3215–25. http://dx.doi.org/10.1021/acs.organomet.7b00366.

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47

Yamabe, Shinichi, Guixiang Zeng, Wei Guan, and Shigeyoshi Sakaki. "Substrate dependent reaction channels of the Wolff–Kishner reduction reaction: A theoretical study." Beilstein Journal of Organic Chemistry 10 (January 23, 2014): 259–70. http://dx.doi.org/10.3762/bjoc.10.21.

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Wolff–Kishner reduction reactions were investigated by DFT calculations for the first time. B3LYP/6-311+G(d,p) SCRF=(PCM, solvent = 1,2-ethanediol) optimizations were carried out. To investigate the role of the base catalyst, the base-free reaction was examined by the use of acetone, hydrazine (H2N–NH2) and (H2O)8. A ready reaction channel of acetone → acetone hydrazine (Me2C=N–NH2) was obtained. The channel involves two likely proton-transfer routes. However, it was found that the base-free reaction was unlikely at the N2 extrusion step from the isopropyl diimine intermediate (Me2C(H)–N=N–H).

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48

Intorp, M., S. Purkis, and W. Wagstaff. "Determination of Carbonyl Compounds in Cigarette Mainstream Smoke. The CORESTA 2010 Collaborative Study and Recommended Method." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 25, no. 2 (2012): 361–74. http://dx.doi.org/10.2478/cttr-2013-0915.

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AbstractA recommended method has been developed and published by CORESTA, applicable to the quantification of selected carbonyl compounds (acetaldehyde, formaldehyde, acetone, acrolein, methyl ethyl ketone, crotonaldehyde, propionaldehyde and butyraldehyde) in cigarette mainstream smoke. The method involved smoke collection in impinger traps, derivatisation of carbonyls with 2,4-dinitrophenylhydrazine (DNPH), separation of carbonyl hydrazones by reversed phase high performance liquid chromatography and detection by ultra violet or diode array.At the start of the process it was determined that

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Dehmlow, Eckehard V., and Christiane Sauerbier. "Note on Carbonyl Derivatives with a Chiral Phosphorylhydrazine." Zeitschrift für Naturforschung B 44, no. 2 (1989): 240–42. http://dx.doi.org/10.1515/znb-1989-0224.

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50

Digambar, Dr Kokane Balaji. "Facile Synthesis Of 1H-Indazoles Through IodobenzeneCatalyzed C–H Amination Under Mild And Metal-Free Conditions." IOSR Journal of Applied Chemistry 18, no. 1 (2025): 01–03. https://doi.org/10.9790/5736-1801010103.

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The transition-metal- and halogen-free synthesis of N-aryl substituted 1H-indazole and derivatives was accomplished on the basis of the iodobenzene-catalyzed intramolecular C -H amination of hydrazones under mild conditions. Reactions of hydrazones derived from ketones and hydrazines with a catalytic amount of iodobenzene in the presence of Oxone as an oxidant in trifluoroacetic acid took place to afford 1H indazoles in moderate to good yields.

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