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Journal articles on the topic 'Aromatic aldehydes'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Ma, Yunjian, Zongquan Li, Hao Zhang, Vincent Kam Wai Wong, Frank Hollmann, and Yonghua Wang. "Bienzymatic Cascade Combining a Peroxygenase with an Oxidase for the Synthesis of Aromatic Aldehydes from Benzyl Alcohols." Catalysts 13, no. 1 (2023): 145. http://dx.doi.org/10.3390/catal13010145.

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Aromatic aldehydes are important aromatic compounds for the flavour and fragrance industry. In this study, a parallel cascade combining aryl alcohol oxidase from Pleurotus eryngii (PeAAOx) and unspecific peroxygenase from the basidiomycete Agrocybe aegerita (AaeUPO) to convert aromatic primary alcohols into high-value aromatic aldehydes is proposed. Key influencing factors in the process of enzyme cascade catalysis, such as enzyme dosage, pH and temperature, were investigated. The universality of PeAAOx coupled with AaeUPO cascade catalysis for the synthesis of aromatic aldehyde flavour compou

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2

Deng, Haibo, Hao Zhang, Zelong Wu, Xiuzhi Tian, Xue Jiang, and Weimin Guo. "Rules and mechanism for the oxidation of lignin-based aromatic aldehyde under alkaline wet oxygen." BioResources 15, no. 2 (2020): 3487–503. http://dx.doi.org/10.15376/biores.15.2.3487-3503.

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To explore the extensive oxidative mechanism of syringaldehyde, vanillin, and p-hydroxybenzaldehyde during the alkaline wet oxidation process (AWOP), the yield of these aromatic aldehydes from AWOP at various temperatures and reaction times was studied. The results showed that the aromatic aldehydes could not be converted into the corresponding aromatic acids during the AWOP, and that the aromatic aldehyde was stable when subjected to the oxygen-free AWOP. However, as the reaction temperature increased or the number of methoxyl groups on the aromatic ring increased, the yield of aromatic aldeh

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3

Kawajiri, Takahiro, Reiya Ohta, Hiromichi Fujioka, Hironao Sajiki, and Yoshinari Sawama. "Aromatic aldehyde-selective aldol addition with aldehyde-derived silyl enol ethers." Chemical Communications 54, no. 4 (2018): 374–77. http://dx.doi.org/10.1039/c7cc08936h.

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4

Zhou, Baocheng, and Wenxing Chen. "The Zwitterionic Imidazolium Salt: First Used for Synthesis of 4-Arylidene-2-phenyl-5(4H)-oxazolones under Solvent-Free Conditions." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/280585.

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The zwitterionic imidazolium salt was prepared and characterized by1H NMR. It was first used for synthesis of azlactones via Erlenmeyer synthesis from aromatic aldehydes and hippuric acid under solvent-free conditions. It was found that aldehyde substituents play an important role in these reactions. Better conversions and therefore higher isolated yields were observed when electron-withdrawing groups (EWG-) were present in the aromatic aldehyde. Opposite results were shown when electron-donating groups (EDG-) were present in the aromatic aldehyde. However, azlactones were obtained in moderate

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5

Yang, Xue-Qing, Zhen-Yu Yi, Sheng-Fu Wang, Ting Chen, and Dong Wang. "Construction of 2D extended cocrystals on the Au(111) surface via I⋯Oaldehyde halogen bonds." Chemical Communications 56, no. 24 (2020): 3539–42. http://dx.doi.org/10.1039/d0cc00199f.

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6

Vishvanath, D. Patil, P. Patil Ketan, R. Sutar Nagesh, and V. Gidh Prathamesh. "Efficient synthesis of biscoumarins using zinc acetate as a catalyst in aqueous media." Chemistry International 3, no. 3 (2017): 240–43. https://doi.org/10.5281/zenodo.1473124.

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Bis-(4-hydroxycoumarin)methanes derivatives (1-9) were synthesized via one pot condensation reaction of various aromatic aldehyde and 4-hydroxycoumarin using zinc acetate as a catalyst in presence of water as a solvent. This mediated reaction of various aromatic and hetero-aromatic aldehydes using catalytic amounts of zinc acetate avoids the use of expensive, corrosive reagents, toxic solvents and provides operational simplicity.

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7

Massa, Antonio, Laura Capozzolo, and Arrigo Scettri. "Sulfoxides in the allylation of aldehydes in the presence of silicon tetrachloride and allyltributylstannane." Open Chemistry 8, no. 6 (2010): 1210–15. http://dx.doi.org/10.2478/s11532-010-0099-7.

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AbstractSiCl4 can be conveniently activated by catalytic amounts of dimethyl sulfoxide or other readily-available sulfoxides for the allylation of aromatic, hetero-aromatic and unsaturated aldehydes in the presence of allyltributyl stannane. Chiral aryl methyl sulfoxides have been used to develop asymmetric allylation methods, as well as probe the aldehyde substrate scope.

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8

Nemec, Vinko, Luka Fotović, Toni Vitasović, and Dominik Cinčić. "Halogen bonding of the aldehyde oxygen atom in cocrystals of aromatic aldehydes and 1,4-diiodotetrafluorobenzene." CrystEngComm 21, no. 21 (2019): 3251–55. http://dx.doi.org/10.1039/c9ce00340a.

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Novel halogen bonded cocrystals of aromatic aldehydes have been synthesized. We present the halogen bond acceptor potential of the aldehyde group oxygen atom in competition with the hydroxy, methoxy and pyridine groups.

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9

Zhang, Yue Cheng, Jing Yuan Gao, Nai Yue Shi, and Ji Quan Zhao. "Synthesis of Chiral Tridentate Ligands Embodying the Bispidine Framework and their Application in the Enantioselective Addition of Diethylzinc to Aldehydes." Advanced Materials Research 396-398 (November 2011): 1236–43. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1236.

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Several new chiral tridentate ligands with the bispidine moiety were synthesized from N-alkyl bispidines and chiral amino (or hydroxyl) acids. The synthesized ligands were used as catalysts in the enantioselective addition of diethylzinc to several aromatic aldehydes and an aliphatic aldehyde. High yield and enantioselectivity were received in the cases of aromatic aldehydes as substrates especially when the employed chiral ligand has a hydroxyl group attached to the chiral center. The effect of the structure, the amount of tridentate chiral ligands, solvent and temperature on the enantioselec

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10

Seebacher, Werner, Michael Hoffelner, Ferdinand Belaj, et al. "Formation of 5-Aminomethyl-2,3-dihydropyridine-4(1H)-ones from 4-Amino-tetrahydropyridinylidene Salts." Molecules 28, no. 19 (2023): 6869. http://dx.doi.org/10.3390/molecules28196869.

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Various 4-aminotetrahydropyridinylidene salts were treated with aldehydes in an alkaline medium. Their conversion to 5-substituted β-hydroxyketones in a one-step reaction succeeded only with an aliphatic aldehyde. Instead, aromatic aldehydes gave 5-substituted β-aminoketones or a single δ-diketone. The new compounds were characterized using spectroscopic methods and a single crystal structure analysis. Some of them showed anticancer and antibacterial properties.

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11

Petko, Kirill I., Andrey A. Filatov, and Taras M. Sokolenko. "Features of Nitration of Aromatic Aldehydes with the Difluoromethoxy Group." Journal of Organic and Pharmaceutical Chemistry 21, no. 3 (2023): 3–10. http://dx.doi.org/10.24959/ophcj.23.285469.

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Nitration of aromatic aldehydes with difluoromethoxy group results in the partial ipso-substitution of the aldehyde group if difluoromethoxy group is located in the para-position to the aldehyde group. The presence of a chlorine atom in the meta-position to the aldehyde group increases the contribution of the ipso-substitution, while the presence of a chlorine atom in the ortho-position to the aldehyde group reduces it. The presence of strong donors (alkoxy groups) in the molecule eliminates the contribution of the ipso-substitution.

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12

Levina, Anastasia A., Denis Dmitrievich Borisov, Maxim Alexandrovich Novikov, Maxim Andreevich Shmelev, Roman Aleksandrovich Novikov та Yury Vasil'evich Tomilov. "Reactions of β-styrylmalonates with aromatic aldehydes: the development of a catalytic version using gallium trichloride". Mendeleev Communications 35, № 3 (2025): 261–63. https://doi.org/10.71267/mencom.7594.

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A catalytic system based on gallium trichloride and silver tetrafluoroborate was successfully tested in the [2 + 3]-annulation reaction of β-styrylmalonates with aromatic aldehydes leading to 2-arylinden-1-ylmalonates. This allows to reduce the amount of gallium compound and to halve the amount of aldehyde used while maintaining the optimal yields of the resulting indenylmalonates previously achieved using 2 equiv. of GaCl<sub>3</sub> and 4-6 equiv. of aldehyde. Under these conditions, aldehydes previously non-reactive were also involved into the transformation.

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13

Liu, Xiaozhu, Yinfeng Li, Jichuang Zhou, and Mingzheng Huang. "Effects of co-inoculation and sequential inoculation of Wickerhamomyces anomalus and Saccharomyces cerevisiae on the physicochemical properties and aromatic characteristics of longan (Dimocarpus longan Lour.) wine." Quality Assurance and Safety of Crops & Foods 13, no. 2 (2021): 56–66. http://dx.doi.org/10.15586/qas.v13i2.893.

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Wickerhamomyces anomalus and Saccharomyces cerevisiae were mixed by co-inoculation or sequential inocula-tion, and the physicochemical properties, electronic sensory characteristics, and aromatic characteristics of longan (Dimocarpus longan Lour.) wine were evaluated to analyze the effects of mixed fermentation on wine quality. The results demonstrate that mixed fermentation obtained by co-inoculation or sequential inoculation decreases the alcohol content of longan wine. Furthermore, mixed fermentation also leads to the reduction of the electronic sensory acidity and richness of longan wine.

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14

Wong, Zhaojiang, Kefu Chen, and Jun Li. "Formation of vanillin and syringaldehyde in an oxygen delignification process." BioResources 5, no. 3 (2010): 1509–16. http://dx.doi.org/10.15376/biores.5.3.1509-1516.

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The formation of vanillin and syringaldehyde during an oxygen delignification process was evaluated. The cleavage of conjugated Cα-Cβ bonds in phenolic lignin caused by the attack of oxygen leads to the formation of aromatic aldehydes and ketones. The formation mechanism was confirmed by the organic compounds identified in the spent liquor by GC/MS. Additionally, the formation of aromatic aldehydes and ketones of hardwood, softwood, and grass was investigated. The results showed that the formed aromatic aldehydes and ketones were related to the units of lignin structure. Among the aromatic ald

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15

Gryko, Daniel T., and Katarzyna E. Piechota. "Straightforward route to trans-A2B-corroles bearing substituents with basic nitrogen atoms." Journal of Porphyrins and Phthalocyanines 06, no. 02 (2002): 81–97. http://dx.doi.org/10.1142/s1088424602000129.

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We have developed a comprehensive methodology that affords regioisomerically pure trans- A 2 B -corroles bearing substituents with basic nitrogen atoms at meso positions. The corrole formation reaction involves the acid-catalyzed condensation of a dipyrromethane (DPM) and an aldehyde followed by oxidation with DDQ. The optimal conditions for this process were identified by extensive modifications of the previously developed conditions for the synthesis of trans-A2B-corroles with aromatic substituents. In particular three distinct sets of conditions were identified for various specific cases. P

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16

Omar, Abdelsattar M., Osheiza Abdulmalik, Mohini S. Ghatge, et al. "An Investigation of Structure-Activity Relationships of Azolylacryloyl Derivatives Yielded Potent and Long-Acting Hemoglobin Modulators for Reversing Erythrocyte Sickling." Biomolecules 10, no. 11 (2020): 1508. http://dx.doi.org/10.3390/biom10111508.

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Aromatic aldehydes that bind to sickle hemoglobin (HbS) to increase the protein oxygen affinity and/or directly inhibit HbS polymer formation to prevent the pathological hypoxia-induced HbS polymerization and the subsequent erythrocyte sickling have for several years been studied for the treatment of sickle cell disease (SCD). With the exception of Voxelotor, which was recently approved by the U.S. Food and Drug Administration (FDA) to treat the disease, several other promising antisickling aromatic aldehydes have not fared well in the clinic because of metabolic instability of the aldehyde mo

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17

D Kawale Gayatri, Shivani. "Synthesis and Bioevaluation of Novel Thiazolidinones from Aromatic Azo-Aldehydes." International Journal of Science and Research (IJSR) 13, no. 1 (2024): 419–22. http://dx.doi.org/10.21275/sr231228124802.

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18

Hajimohammadi, Mahdi, Hamid Mofakham, Nasser Safari, and Anahita Mortazavi Manesh. "Highly efficient conversion of aldehydes to carboxylic acid in the presence of platinum porphyrin sensitizers, air and sunlight." Journal of Porphyrins and Phthalocyanines 16, no. 01 (2012): 93–100. http://dx.doi.org/10.1142/s1088424612004483.

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A variety of aromatic and aliphatic aldehydes were oxidized to the corresponding carboxylic acids in the presence of platinum porphyrin, sunlight and air in acetonitrile solvent under mild conditions. Nitrobenzaldehydes were found to be very efficient 1O2 scavengers that quench the formation of acids from any aldehyde in the presence of free-base porphyrin sensitizers. However, nitrobenzaldehydes were converted to the corresponding acids in the presence of platinum porphyrins. The platinum porphyrins are very good and efficient catalysts for a wide range of applications in the aerobic conversi

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19

Gisya, Abdi, and Alizadeh Abdolhamid. "Surface-induced formation of stereogenic centers on gold nanoparticles through diastereoselective interfacial Henry reaction: an NMR investigation." Gold Bulletin 51 (June 6, 2018): 65–74. https://doi.org/10.1007/s13404-018-0232-5.

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This study aims at the synthesis of gold nanoparticles (2–3 nm) functionalized with different nitroalkane-terminated thiols and investigates the chemical reactivity of these confined nitroalkanes towards aldehydes to yield β-nitroalcohols. Interfacial Henry reaction between fixed nitroalkane-terminated thiols with various aromatic and heteroaromatic aldehydes resulted in stereogenic centers on the surface of mixed-monolayer-protected gold nanoparticles (MMPNs). The ratio of the resulting diastereomers was determined by 1H NMR spectroscopy. It was found that some parameters such as t

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20

Abdel-Latif, Nehad A. "Synthesis and Antidepressant Activity of Some New Coumarin Derivatives." Scientia Pharmaceutica 73, no. 4 (2005): 193–216. http://dx.doi.org/10.3797/scipharm.aut-05-15.

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The coumarin-3-cinnamoyl derivatives 2a-d were prepared via Claisen-Schmidt condensation of 3-acetylcoumarin 1 with different aromatic aldehydes. Cycloaddition reaction of 2b,e with guanidine and thiourea yielded the corresponding aminopyrmimidine 3a,b and thioxypyrimidine derivatives 4a,b, respectively. Compounds 4a,b were condensed with chloroacetic acid or 3-bromopropionic acid to yield coumarin 3-thiazolo-pyrimidine 5a,b and thiazinopyrimidine 6a,b derivatives, respectively. Compounds 4a,b were condensed with chloroacetic acid and aromatic aldehyde to yield the aryl methylene derivatives 7

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21

Call, Arnau, Carla Casadevall, Ferran Acuña-Parés, Alicia Casitas, and Julio Lloret-Fillol. "Dual cobalt–copper light-driven catalytic reduction of aldehydes and aromatic ketones in aqueous media." Chemical Science 8, no. 7 (2017): 4739–49. http://dx.doi.org/10.1039/c7sc01276d.

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A dual catalytic system based on earth-abundant elements reduces aromatic ketones and aldehydes to alcohols in aqueous media under visible light. An unprecedented selectivity for the reduction of aromatic ketones versus aliphatic aldehydes is reported.

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22

Mosendz, Anastasiia, and Maryna Zui. "COMPARISON OF DERIVATIZATION AND SOLID-PHASE MICROEXTRACTION OF A SET OF AROMATIC ALDEHYDES AND DIALDEHYDES FOR GC/FID DETERMINATION IN AQUEOUS SAMPLES." Bulletin of Taras Shevchenko National University of Kyiv. Chemistry, no. 1 (59) (2024): 19–25. https://doi.org/10.17721/1728-2209.2024.1(59).3.

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Background. One of the main advantages of chromatography is the ability to separate and simultaneously determine a large number of compounds. In the case of the analysis of aldehydes, in addition to the optimization of chromatographic separation and detection, methods are designed to include sample preparation and derivatization with the selection of optimal conditions. Among the methods available in the literature, there are some that enable the determination ranging from a few to 80 or more carbonyl compounds simultaneously, with varying sensitivity. The aim of this work was to investigate t

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23

Rossi, Sergio, Maurizio Benaglia, and Laura Maria Raimondi. "DFT investigation on Lewis base-catalyzed Lewis acid-mediated reactions: hypervalent silicon species as chiral organocatalysts in (direct) aldol reactions." New Journal of Chemistry 44, no. 44 (2020): 19288–93. http://dx.doi.org/10.1039/d0nj03976d.

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The stereoselective organocatalytic addition of silyl enol ethers to aromatic aldehydes catalyzed by bisphosphoramides and the direct aldol reaction between ketones and aromatic aldehydes promoted by phosphinoxides in the presence of tetrachlorosilane were investigated by the DFT approach.

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24

Kutasevich, Anton V., Anna S. Efimova, Marina N. Sizonenko, Valery P. Perevalov, Ludmila G. Kuz’mina, and Vitaly S. Mityanov. "Unexpected Aldehyde-Catalyzed Reaction of Imidazole N-Oxides with Ethyl Cyanoacetate." Synlett 31, no. 02 (2019): 179–82. http://dx.doi.org/10.1055/s-0039-1691527.

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The reaction of 2-unsubstituted imidazole N-oxides with ethyl cyanoacetate and aromatic aldehydes leads to the formation of ethyl 2-cyano-2-(1,3-dihydro-2H-imidazole-2-ylidene)acetates. The reaction proceeds through an initial [3+2] cycloaddition, followed by cleavage of the cycloadduct and regeneration of the aldehyde, which essentially plays a catalytic role.

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25

Arthur-Santiago, Margarita A., Rosa María Oliart-Ros, María G. Sánchez-Otero, and Gerardo Valerio-Alfaro. "Mechanochemo-enzymatic Synthesis of Aromatic Aldehyde Oxime Esters." Natural Product Communications 13, no. 7 (2018): 1934578X1801300. http://dx.doi.org/10.1177/1934578x1801300723.

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The synthesis of aromatic aldehyde oxime esters (considered fragrances, antifungal and antimicrobial compounds) was achieved by two reactions which combine the advantage of green chemistry and biocatalysis. In the first step, the mechanochemical oxime synthesis by means of grindstone milling of six solid aromatic aldehydes and hydroxylamine hydrochloride in the presence of FlorisilR, as the best support, yielded the aromatic aldehyde oximes 1–6 with high purity and good yields. In the second step the lipase catalyzed acetylation reaction at 40°C for three days of those oximes with vinyl and is

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26

Singh, Shailesh, Jyoti Tiwari, Deepali Jaiswal, et al. "Nucleophilic Acylation with Aromatic Aldehydes to 2 Bromoacetonitrile: An Umpolung Strategy for the Synthesis of Active Methylene Compounds." Current Organic Synthesis 17, no. 7 (2020): 518–24. http://dx.doi.org/10.2174/1570179417666200615153536.

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Background: A novel one-pot N-heterocyclic carbene (NHC)-catalysed acylation of 2- bromoacetonitrile with aromatic aldehydes is reported. The protocol involves carbonyl umpolung reactivity of aldehydes in which the carbonyl carbon attacks nucleophilically (as d1 nucleophile) on the electrophilic terminal of 2-bromoacetonitrile to afford 3-aryl-3-oxopropanenitrile. The salient features of this procedure are short reaction time, operational simplicity, ambient temperature, no by-product formation and high yields. Materials and Methods: A flame-dried round bottom flask was charged with Imidazoliu

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27

Nazarifar, Mohammad Reza. "Cobalt(II) Chloride Hexahydrate as an Efficient and Inexpensive Catalyst for the Preparation of Biscoumarin Derivatives." Advances in Chemistry 2014 (October 12, 2014): 1–5. http://dx.doi.org/10.1155/2014/340786.

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Cobalt(II) chloride hexahydrate (CoCl2·6H2O) has been found to be an efficient catalyst for the one-pot synthesis of biscoumarin derivatives through a combination of aromatic aldehydes and 4-hydroxycoumarin in aqueous media at 70°C. Several types of aromatic aldehyde, containing electron-withdrawing groups as well as electron-donating groups, were used in the reaction and in all cases the desired products were synthesized successfully. The present approach offers remarkable advantages such as short reaction times, excellent yields, straightforward procedure, easy purification, environment frie

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28

Bisagni, Emile, Marilys Rautureau, Martine Croisy-Delcey, and Christiane Huel. "Nouvelle synthèse de chloro-1 méthyl-5 isoquinoléines fusionnées à divers systèmes aromatiques par leur liaison [g]." Canadian Journal of Chemistry 65, no. 9 (1987): 2027–30. http://dx.doi.org/10.1139/v87-337.

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Lithiation of 4-acetyl 2-chloro pyridine ethylene glycol ketal by exchange with lithium diisopropylamine (LDA) led to 4-acetyl 2-chloro 3-lithio pyridine ethylene glycol ketal. This lithio derivative was reacted with aromatic aldehydes giving the expected alcohols, which were reduced by triethylsilane and trifluoroacetic acid at room temperature. The resulting 4-acetyl 3-arylmethyl 2-chloro pyridine ethylene glycol ketals were hydrolysed and cyclized in acidic medium, leading to polycondensed heterocyclic systems that have a 1-chloro 5-methyl isoquinoline nucleus fused by its [g] bond to the s

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29

Sheikhi, Ehsan, Mehdi Adib, Morteza Karajabad, and Seyed Gohari. "Sulfuric Acid-Promoted Oxidation of Benzylic Alcohols to Aromatic Aldehydes in Dimethyl Sulfoxide: An Efficient Metal-Free Oxidation Approach." Synlett 29, no. 07 (2018): 974–78. http://dx.doi.org/10.1055/s-0037-1609149.

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An efficient metal-free oxidation of benzylic alcohols to aromatic aldehydes is described. Heating a solution of the benzylic alcohol in DMSO in the presence of H2SO4 afforded the corresponding aldehyde in excellent yield. This oxidation reaction, which proceeds with a short reaction time and no side products, is akin to the Pfitzner–Moffatt oxidation, but without the need for N,N′-dicyclohexylcarbodiimide.

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30

BIN, SONG, ZHANG . QIYAN, CHEN YUN-TI, and K. MURMANN R. "Kinetics and Mechanism of Reactions of the Quasi-aromatic Complex [Ni(PnAO)-6H]o with Aromatic Aldehydes." Journal of Indian Chemical Society Vol. 69, Aug 1992 (1992): 420–25. https://doi.org/10.5281/zenodo.6005603.

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Chemistry Department, Nankai University, Tianjin 300071, P.R.C. Chemistry Department, University of Missouri-Columbia, Columbia, MO 65211, U S.A.<strong> </strong> <em>Manuscript received 13 February 1991</em>  Kinetics and mechanism of the reactions of aromatic aldehydes with a quasi-aromatic nickel(II)<strong> </strong>complex [Ni(PnAO)-6H]<sup>o</sup><strong> </strong>have been studied in acidic media<strong> </strong>(pH=1-2; EtOH: H<sub>2</sub>O, 1: 2)<strong> </strong>and a<strong> </strong>competitive cousecutive second order reaction me

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31

Gard, J. C., B. Hanquet, L. Roullier, Y. Mugnier, and J. Lessard. "Electrochemically induced chain reactions: the addition of fluorene and indene to aromatic aldehydes initiated by electrochemical reduction." Canadian Journal of Chemistry 74, no. 1 (1996): 55–63. http://dx.doi.org/10.1139/v96-007.

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The electrochemical reduction at −30 °C of 2,6-dichlorobenzaldehyde (1a), benzaldehyde (1b), and terephthalaldehyde (2) in tetrahydrofuran with tetrabutylammonium perchlorate as supporting electrolyte, under an argon atmosphere and in the presence of fluorene or indene, gives carbinols resulting from the addition of fluorene or indene and requires only a catalytic amount of electricity. The chain reaction is initiated by proton abstraction from fluorene or indene by a base electrogenerated by reduction of the aldehyde and the propagation involves the addition of the carbanion to the aldehyde f

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32

Reddymasu, Sreenivasulu, Hatti Islavathu, Venkata Sri Ranganath Kalluri, and Ramesh Raju Rudraraju. "Asymmetric hydrogenation of N-heterocycles with sodium cyanoborohydride and S-(–)-binol." Journal of Indian Chemical Society 93, Oct 2016 (2016): 1217–20. https://doi.org/10.5281/zenodo.5639391.

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Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar-522 510, Andhra Pradesh, India <em>E-mail</em> : rrrau1@gmail.com Department of Chemistry, Guru Ghasidas Viswavidyalaya (Central University), Bilaspur-495 009, Chhattisgarh, India <em>Manuscript received online 12 February 2016, accepted 22 May 2016</em> Asymmetric hydrogenation of indole-3-aldehydes, indazole-3-aldehyde and aza indole-3-aldehydes with sodium cyanoborohydride and S-binol under glac. acetic acid over a period of 1–2 h gave enantiomeric excess of 3-substituted 2,3-dihydro alcohols in good yields. This i

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33

Wu, Lisha, Shiqiang Yan, and Yinta Li. "Tandem reaction for the synthesis of bicyclic ortho-aminocarbonitrile derivatives using DMAPA as a cheap and efficient catalyst." Journal of Pharmaceutical and Biopharmaceutical Research 2, no. 2 (2020): 145–51. http://dx.doi.org/10.25082/jpbr.2020.02.001.

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To develop a new method for the synthesis of bicyclic ortho-aminocarbonitrile derivatives. Reaction of aromatic aldehydes, cycloketones and malononitrile with catalytic amount of 3-(dimethylamino)- 1-propylamine (DMAPA) in ethanol via Knoevenagel-Michael cascades. The bicyclic ortho-aminocarbonitrile derivatives were obtained with good to excellent yields along with short reaction times. The universality, excellent yields, mild reaction and easy collection through simple filtration indicate the preparation of orthoaminocarbonitriles derivatives is an efficient and suitable protocol, which use

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34

Yuasa, Akihiro, Kazunori Nagao та Hirohisa Ohmiya. "Allylic cross-coupling using aromatic aldehydes as α-alkoxyalkyl anions". Beilstein Journal of Organic Chemistry 16 (7 лютого 2020): 185–89. http://dx.doi.org/10.3762/bjoc.16.21.

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The allylic cross-coupling using aromatic aldehydes as α-alkoxyalkyl anions is described. The synergistic palladium/copper-catalyzed reaction of aromatic aldehydes, allylic carbonates, and a silylboronate produces the corresponding homoallylic alcohol derivatives. This process involves the catalytic formation of a nucleophilic α-silyloxybenzylcopper(I) species and the subsequent palladium-catalyzed allylic substitution.

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Peng, Xinhua, Hui Zou, Chuanfeng Hu, Kaihao Chen, and Guansheng Xiao. "Cobalt Vanadium Oxide Supported on Reduced Graphene Oxide for the Oxidation of Styrene Derivatives to Aldehydes with Hydrogen Peroxide as Oxidant." Synlett 29, no. 16 (2018): 2181–84. http://dx.doi.org/10.1055/s-0037-1610630.

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Cobalt vanadium oxide supported on reduced graphene oxide showed excellent performance in the oxidation of styrene derivatives to the corresponding aldehydes with hydrogen peroxide as oxidant. An electron-donating group at the para-position of the aromatic ring facilitates the formation of the corresponding aldehyde. Compared with conventional methods, the newly designed heterogeneous catalytic system offers a promising prospect because of its economic applicability and environmental friendliness.

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Ramesh, Baboo. "Ru (III) Catalysed Oxidative Degradation of Sodium Bisulphite Derivatives of Aromatic Aldehydes by Potassium Hexacyano Ferrate (III) in Aqueous Alkaline Medium." International Journal of Current Research and Review 14, no. 19 (2022): 17–20. http://dx.doi.org/10.31782/ijcrr.2022.141903.

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Introduction: The catalysed oxidation of the derivatives of aromatic aldehydes with inorganic moieties is still unstudied with an economically cheaper oxidant like potassium hexacyanoferrate (III). The catalyst like ruthenium (III) chloride is very much effective at very low concentrations for oxidation reactions. Aims: The study is carried out to observe and to get the results about the oxidative degradation of derivatives of organic and inorganic moieties. Methodology: Benzaldehyde sodium bisulphite (BSS) and substituted aromatic aldehyde sodium bi sulphite like p-chloro benzaldeyde sodium b

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Shojaei, Abdollah, Ali Rezvani, and Majid Heravi. "A green, reusable and highly efficient solid acid catalyst for the oxidation of aldehydes to the corresponding carboxylic acids using H2O2 and KMnO4: H5PV2Mo10O40 (10-molybdo-2-vanadophosphoric heteropolyacid)." Journal of the Serbian Chemical Society 76, no. 11 (2011): 1513–22. http://dx.doi.org/10.2298/jsc100920135s.

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H5PV2Mo10O40-catalyzed oxidation of aromatic aldehydes to the corresponding carboxylic acids using hydrogen peroxide and KMnO4 as oxidants under mild conditions is reported. This system provides an efficient, convenient and practical method for the oxidation of aromatic aldehydes. In this work, differences between Keggin and Dawson type polyoxometalates are addressed in term of relative stability, hardness and acidity.

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Casey, John, and Roy Dobb. "Microbial routes to aromatic aldehydes." Enzyme and Microbial Technology 14, no. 9 (1992): 739–47. http://dx.doi.org/10.1016/0141-0229(92)90114-4.

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Nie, Siyu, and Leichang Cao. "Aromatic Aldehydes Production by Oxidative Degradation of Solid Residue Derived from Pine Waste Hydrolysis Coupling Acetylation." E3S Web of Conferences 185 (2020): 04038. http://dx.doi.org/10.1051/e3sconf/202018504038.

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Xylose and cellulose acetate were prepared by hydrolysis and acetylation of hemicellulose and cellulose in landscaping biomass waste (pine) by dilute acid hydrolysis and acetylation, respectively. The obtained solid residue was rich in lignin that mainly contains three phenylpropane structural units and can be used to prepare aromatic chemicals under hydrothermal conditions. In this work, the synthesis of high value-added aromatic aldehydes (vanillin, syringaldehyde, and p-hydroxybenzaldehyde) from the solid residue (rich in lignin) by mild catalytic oxidation was studied. The oxidation degrad

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Li, Yan, Jie Chang, and Yong Ouyang. "Selective Production of Aromatic Aldehydes from Lignin by Metalloporphyrins/H₂O₂ System." Advanced Materials Research 805-806 (September 2013): 273–76. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.273.

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In this work, a promising method for production of high value-added aromatic aldehydes from lignin was proposed. The concept is based on the use of metalloporphyin as catalyst and hydrogen peroxide as oxidant under alkaline condition. The biomimetic catalyst Co (TPPS4) (TPPS4=meso-tetra (p-sulphonatophenyl) porphyrin) was prepared and characterized by1H-NMR spectroscopy, FT-IR spectroscopy and UVvisible spectroscopy. It exhibited high activity in the catalytic oxidation of lignin. The main products were p-hydroxybenzaldehyde, vanillin, and syringaldehyde from catalytic oxidation of lignin, whi

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Wu, Zhen, Ning Xu, Lei Hu, Ben Lin Dai, and Jia Xing Xu. "Enzymatic Hydrolysis Lignin Oxidation to Prepare Aromatic Aldehydes with Activation of Fenton Reagent." Advanced Materials Research 953-954 (June 2014): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.173.

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Enzymatic hydrolysis lignin was prepared and used to converse into aromatic aldehydes by catalytic wet oxidation with activation of Fenton reagent. The results demonstrated that the enzymatic hydrolysis lignin was a suitable raw material for the preparation of aromatic aldehydes. Orthogonal experiments were conducted to obtain the optimum preparation conditions. The effects of activation time, activation temperature, ratio of liquid to solid and pH of the reaction system on the yield of aromatic aldehydes were dealt with in this paper and optimal activation conditions were obtained as followed

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Medien, H. A. A. "Kinetic Studies of Condensation of Aromatic Aldehydes with Meldrum’s Acid." Zeitschrift für Naturforschung B 57, no. 11 (2002): 1320–26. http://dx.doi.org/10.1515/znb-2002-1119.

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The condensation reaction of Meldrum’s acid with aromatic aldehydes in the presence of a catalyst has been investigated spectrophotometrically at 25-50 °C. The reaction follows overall second order kinetics, first order in each of the reactants. Electron-withdrawing groups accelerate and electron-releasing groups retard the rate of condensation. From the dependence of the rate constants on temperature, the activation parameters have been calculated and also the isokinetic temperature with a value of 403.5 K. Based on this reaction, determination of eight aromatic aldehydes in a concentration r

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Maity, Himadri Sekhar, Kaushik Misra, Tanushree Mahata, and Ahindra Nag. "CSJ acting as a versatile highly efficient greener resource for organic transformations." RSC Advances 6, no. 29 (2016): 24446–50. http://dx.doi.org/10.1039/c6ra01760f.

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We have reported the simple, new, greener biotransformation for the selective reduction of aromatic aldehydes, decarboxylation of aromatic acids and hydrolysis of aromatic compounds by Cucumis sativus L. juice (CSJ).

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Wang, Ming-Wen, Yong-Jun Chen, Li Liu, Dong Wang, and Xiao-Ling Liu. "Allylation of Hydrates of Aldehydes and Activated Aromatic Aldehydes with Allyltrimethylsilane in H2O-CH3CN catalyzed by Sc(OTf)3." Journal of Chemical Research 2000, no. 2 (2000): 80–81. http://dx.doi.org/10.3184/030823400103166445.

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Sc(OTf)3-catalysed allylations of hydrates of α-keto aldehydes and glyoxylates and activated aromatic aldehydes with allyltrimethylsilane in H2O–CH3CN were examined. α-Keto and α-ester homoallylic alcohols 3a–d and aromatic homoallylic alcohols 3e–f were obtained in good to excellent yields, depending on the reaction temperature and the ratio of H2O to CH3CN in co-solvent.

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Yadav, J. S., B. V. Subba Reddy, K. Premalatha, and K. Shiva Shankar. "Bismuth(III)-catalyzed rapid and highly efficient synthesis of 2-aryl-1-arylmethyl-1H-benzimidazoles in water." Canadian Journal of Chemistry 86, no. 2 (2008): 124–28. http://dx.doi.org/10.1139/v07-140.

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2-Aryl-1-arylmethyl-1H-benzimidazoles are prepared in high yields under extremely mild conditions via the condensation of aryl-1,2-diamines with aromatic aldehydes using 10 mol% of bismuth triflate in water. The use of water and readily available bismuth triflate makes this process quite simple, more convenient, and environment-friendly.Key words: aryl-1,2-diamines, aromatic aldehydes, bismuth catalysis, benzimidazoles.

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Ren, Yangang, Li Zhou, Abdelwahid Mellouki, et al. "Reactions of NO<sub>3</sub> with aromatic aldehydes: gas-phase kinetics and insights into the mechanism of the reaction." Atmospheric Chemistry and Physics 21, no. 17 (2021): 13537–51. http://dx.doi.org/10.5194/acp-21-13537-2021.

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Abstract. Rate coefficients for the reaction of NO3 radicals with a series of aromatic aldehydes were measured in a 7300 L simulation chamber at ambient temperature and pressure by relative and absolute methods. The rate coefficients for benzaldehyde (BA), ortho-tolualdehyde (O-TA), meta-tolualdehyde (M-TA), para-tolualdehyde (P-TA), 2,4-dimethyl benzaldehyde (2,4-DMBA), 2,5-dimethyl benzaldehyde (2,5-DMBA) and 3,5-dimethyl benzaldehyde (3,5-DMBA) were k1= 2.6 ± 0.3, k2= 8.7 ± 0.8, k3= 4.9 ± 0.5, k4= 4.9 ± 0.4, k5= 15.1 ± 1.3, k6= 12.8 ± 1.2 and k7= 6.2 ± 0.6, respectively, in the units of 10−

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Zhao, Baoguo, and Wen-Wen Chen. "Decarboxylative Umpolung Synthesis of Amines from Carbonyl Compounds." Synlett 31, no. 16 (2020): 1543–50. http://dx.doi.org/10.1055/s-0040-1707157.

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2-Azaallyl anions are valuable intermediates which have versatile applications in functionalization with various electrophiles. Decarboxylation of the imines formed from aromatic aldehydes and α,α-diphenylglycine provides an interesting and efficient way to generate delocalized 2-azaallyl anions, which display high reactivity toward different electrophiles with excellent regioselectivity at the diphenylketimino aryl carbon of the 2-azaallyl anions. The transformation produces various amines in good yields under very mild conditions. This Synpacts article highlights the recent advances on the d

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More, Ajinkya, Thomas Elder, and Zhihua Jiang. "A review of lignin hydrogen peroxide oxidation chemistry with emphasis on aromatic aldehydes and acids." Holzforschung 75, no. 9 (2021): 806–23. http://dx.doi.org/10.1515/hf-2020-0165.

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Abstract This review discusses the main factors that govern the oxidation processes of lignins into aromatic aldehydes and acids using hydrogen peroxide. Aromatic aldehydes and acids are produced in the oxidative degradation of lignin whereas mono and dicarboxylic acids are the main products. The stability of hydrogen peroxide under the reaction conditions is an important factor that needs to be addressed for selectively improving the yield of aromatic aldehydes. Hydrogen peroxide in the presence of heavy metal ions readily decomposes, leading to minor degradation of lignin. This degradation r

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Jiang, He-yan, and Xu-xu Zheng. "Tuning the chemoselective hydrogenation of aromatic ketones, aromatic aldehydes and quinolines catalyzed by phosphine functionalized ionic liquid stabilized ruthenium nanoparticles." Catalysis Science & Technology 5, no. 7 (2015): 3728–34. http://dx.doi.org/10.1039/c5cy00293a.

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Qandalee, Mohammad, Masoud Mokhtary, Sakineh Asghari, and Mehrdad Mehrzadi. "Synthesis of Polyfunctionalized Amino Furans with Long Conjugated Aromatic Systems Using Nucleophilic Aromatic Isocyanide." E-Journal of Chemistry 9, no. 2 (2012): 791–95. http://dx.doi.org/10.1155/2012/931293.

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