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Journal articles on the topic 'Diethyl acetals'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Ferro, V., M. Mocerino, RV Stick, and DMG Tilbrook. "An Improvement in the Preparation of Some Carbohydrate Benzylidene Acetals." Australian Journal of Chemistry 41, no. 5 (1988): 813. http://dx.doi.org/10.1071/ch9880813.

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Carbohydrate benzylidene and p- methoxybenzylidene acetals are easily prepared by treatment of various sugar derivatives with either benzaldehyde diethyl acetal or p- methoxybenzaldehyde diethyl acetal , respectively, in refluxing chloroform containing camphorsulfonic acid.

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2

Pestov, Alexander, Yuliya Privar, Arseny Slobodyuk, Andrey Boroda, and Svetlana Bratskaya. "Chitosan Cross-Linking with Acetaldehyde Acetals." Biomimetics 7, no. 1 (2022): 10. http://dx.doi.org/10.3390/biomimetics7010010.

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Here we demonstrate the possibility of using acyclic diethylacetal of acetaldehyde (ADA) with low cytotoxicity for the fabrication of hydrogels via Schiff bases formation between chitosan and acetaldehyde generated in situ from acetals in chitosan acetate solution. This approach is more convenient than a direct reaction between chitosan and acetaldehyde due to the better commercial availability and higher boiling point of the acetals. Rheological data confirmed the formation of intermolecular bonds in chitosan solution after the addition of acetaldehyde diethyl acetal at an equimolar NH2: acet

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3

Xu, Tongyu, Zhengkun Yu, and Liandi Wang. "Iron-Promoted Cyclization/Halogenation of Alkynyl Diethyl Acetals." Organic Letters 11, no. 10 (2009): 2113–16. http://dx.doi.org/10.1021/ol9005689.

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4

Grindley, T. Bruce, Srihari Kusuma, and T. Stanley Cameron. "Kinetic benzylidenation. Part I. The selective formation of five-membered ring benzylidene acetals from aldose diethyl dithioacetals." Canadian Journal of Chemistry 64, no. 12 (1986): 2388–96. http://dx.doi.org/10.1139/v86-395.

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Reaction of D-arabinose diethyl dithioacetal with one equivalent of benzaldehyde dimethyl acetal in the presence of p-toluenesulfonic acid at −40 °C gave a mixture of the two epimers of 5-O-methoxyphenylmethyl-D-arabinose diethyl dithioacetal initially. After 14 h at −20 °C, the major products were R- and S-4,5-O-benzylidene-D-arabinose diethyl dithioacetal. The structure of the S isomer was determined by X-ray crystallography. The crystal was orthorhombic, with space group P212121, cell dimensions a = 5.179(4), b = 12.469(3), c = 27.150(4) Å, and Z = 4. The crystal structure was solved using

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5

Jin-Chang, Ding, Xu Rong, Liu Miao-Chang, Chen Xi-An, and Wu Hua-Yue. "Gallium triiodide as a highly efficient and mild catalyst for the diethyl acetalization of carbonyl compounds." Journal of Indian Chemical Society Vol. 85, May 2008 (2008): 566–68. https://doi.org/10.5281/zenodo.5816547.

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Wenzhou Vocational and Technical College, Wenzhou, Zhejiang 325035, P. R. China E-mail : djc@wzvtc.cn Fax : 86-577-86680188 College of Chemistry and Materials Science, Wenzhou University, Wenzhou, Zhejiang 325027, P.R. China <em>E-mail :</em> hywu3@163.com                    Fax : 86-577-88368280 <em>Manuscript received 15 February 2007. revised 28 December 2007, accepted 6 March 2008</em> Diethyl acetals were obtained from carbonyl compounds in good to excellent yields under mild reaction conditions in the presence of triethyl orthoformate and

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6

Gao, Fuye, and D. Jean Burnell. "Reactions of 1,2-Bis(trimethylsilyloxy)cycloalkenes with the Diethyl Acetals of Aldehydes." Journal of Organic Chemistry 71, no. 1 (2006): 356–59. http://dx.doi.org/10.1021/jo051683+.

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7

Boyer, Bernard, Rafik Kalfat, Gerard Lamaty, and Jean Pierre Roque. "Reactivity in reverse micelles: acid-catalysed hydrolysis of para-substituted benzaldehyde diethyl acetals." Journal of the Chemical Society, Perkin Transactions 2, no. 7 (1988): 1325. http://dx.doi.org/10.1039/p29880001325.

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8

Fisyuk, A. S., and A. Yu Mukanov. "Synthesis of 3-isothiocyanatopropion-and-butyraldehyde diethyl acetals and their reactions with n-nucleophiles." Russian Journal of Organic Chemistry 42, no. 9 (2006): 1269–74. http://dx.doi.org/10.1134/s107042800609003x.

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9

Matsumoto, Toshihiko. "Simple One–Pot Synthesis of Hexakis(2-alkoxy-1,5-phenyleneimine) Macrocycles by Precipitation–Driven Cyclization." Macromol 4, no. 1 (2024): 1–22. http://dx.doi.org/10.3390/macromol4010001.

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Hexakis(2-alkoxy-1,5-phenyleneimine) macrocycles were synthesized using a simple one-pot procedure through precipitation-driven cyclization. The acetal-protected AB–type monomers, 2-alkoxy-5-aminobenzaldehyde diethyl acetals, underwent polycondensation in water or acid-containing tetrahydrofuran. The precipitation–driven cyclization, based on imine dynamic covalent chemistry and π–stacked columnar aggregation, played a decisive role in the one–pot synthesis. The progress of the reaction was analyzed using MALDI–TOF mass spectrometry. The macrocycles with alkoxy chains were soluble in specific

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10

Thibaud, Fannie, Svitlana Shinkaruk, and Philippe Darriet. "Quantitation, Organoleptic Contribution, and Potential Origin of Diethyl Acetals Formed from Various Aldehydes in Cognac." Journal of Agricultural and Food Chemistry 67, no. 9 (2019): 2617–25. http://dx.doi.org/10.1021/acs.jafc.9b01084.

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11

Hirota, Takashi, Hiroko Fujita, Kenji Sasaki, and Tetsuto Namba. "A novel synthesis of benzofuran and related compounds. III. The vilsmeier reaction of phenoxyacetaldehyde diethyl acetals." Journal of Heterocyclic Chemistry 23, no. 6 (1986): 1715–16. http://dx.doi.org/10.1002/jhet.5570230622.

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12

Guss, L. T., L. V. Ershov, G. A. Bogdanova, and V. G. Granik. "Acetals of lactams and acid amides 55. Study of reaction of 3-oxopyridine and isoquinolin-3-one derivatives with dimethylformamide diethyl acetal." Chemistry of Heterocyclic Compounds 26, no. 2 (1990): 183–88. http://dx.doi.org/10.1007/bf00499413.

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13

KADUSHKIN, A. V., N. P. SOLOV'EVA, T. V. GOLOVKO, and V. G. GRANIK. "ChemInform Abstract: Acetals of Lactams and Acid Amides. Part 65. Reaction of Dimethylformamide Diethyl Acetal with 5-Carbamoyl(thiocarbamoyl)-6- aminopyrrolizine Derivatives." ChemInform 23, no. 44 (2010): no. http://dx.doi.org/10.1002/chin.199244189.

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14

Avrutina, O. Yu, M. V. Kudrevatykh та O. N. Bubel'. "ChemInform Abstract: Reactions of α,β-Epoxy Methyl Ketone Diethyl Acetals with Phenol, Benzenethiol, and Aromatic Amines." ChemInform 30, № 51 (2010): no. http://dx.doi.org/10.1002/chin.199951038.

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15

Saraswathy, V. Geetha, and S. Sankararaman. "Chemoselective aldol type condensation of silyl enol ethers and acetals in 5 mol dm–3lithium perchlorate–diethyl ether." J. Chem. Soc., Perkin Trans. 2, no. 1 (1996): 29–31. http://dx.doi.org/10.1039/p29960000029.

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16

Mora, José R., Alexis Maldonado, Rosa M. Domínguez та Gabriel Chuchani. "The mechanisms of the homogeneous, unimolecular, elimination kinetics of several β -substituted diethyl acetals in the gas-phase". Journal of Physical Organic Chemistry 23, № 9 (2010): 845–52. http://dx.doi.org/10.1002/poc.1672.

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17

Heydari, Akbar, and Reza Alijanianzadeh. "Lithium Perchlorate Diethyl Ether/Methyl Triflate Catalyzed Transfer of Silicon from Oxygen to Carbon in Silyl Ketene (Thio) Acetals." Chemistry Letters 32, no. 3 (2003): 226–27. http://dx.doi.org/10.1246/cl.2003.226.

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18

Yoshimatsu, Mitsuhiro, та Fumihiro Hatanaka. "Reaction of β-Ethoxyvinyl Lithiums Generated from Phenyltellanyl- and Ethyltellanylacetaldehyde Diethyl Acetals with Aldehydes and Ketones and Successive Hydrations". CHEMICAL & PHARMACEUTICAL BULLETIN 52, № 2 (2004): 248–53. http://dx.doi.org/10.1248/cpb.52.248.

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19

Gupta, Akhilesh K., R. T. Chakrasali, H. Ila, and H. Junjappa. "Reaction of Polarized KeteneS,N-Acetals with Bromoacetaldehyde Diethyl Acetal: Synthesis of 1-Substituted 3-Acyl- and 3-Nitro-2-methylthiopyrroles and 1,2-Annulated 3-Acylpyrroles." Synthesis 1989, no. 02 (1989): 141–42. http://dx.doi.org/10.1055/s-1989-27179.

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20

DOZOROVA, E. N., A. V. KADUSHKIN, G. A. BOGDANOVA, N. P. SOLOV'EVA, and V. G. GRANIK. "ChemInform Abstract: Acetals of Lactams and Acid Amides. Part 68. 1-Cyanomethyl-2- pyrrolidone Diethyl Acetal (I) in the Synthesis of 7,8- Trimethylenepurine Derivatives (VI), (X), (XI)." ChemInform 24, no. 2 (2010): no. http://dx.doi.org/10.1002/chin.199302205.

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21

SARASWATHY, V. G., and S. SANKARARAMAN. "ChemInform Abstract: Chemoselective Aldol-Type Condensation of Silyl Enol Ethers and Acetals in 5 mol dm-3 Lithium Perchlorate-Diethyl Ether." ChemInform 27, no. 16 (2010): no. http://dx.doi.org/10.1002/chin.199616056.

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22

Mansilla, Horacio, та María M. Afonso. "Iron(III) Tosylate in the Preparation of Dimethyl and Diethyl Acetals from Ketones and β -Keto Enol Ethers from Cyclic β -Diketones". Synthetic Communications 38, № 15 (2008): 2607–18. http://dx.doi.org/10.1080/00397910802219361.

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23

Geetha Saraswathy, V., and S. Sankararaman. "Chemoselective Protection of Aldehydes as Dithioacetals in Lithium Perchlorate-Diethyl Ether Medium. Evidence for the Formation of Oxocarbenium Ion Intermediate from Acetals." Journal of Organic Chemistry 59, no. 16 (1994): 4665–70. http://dx.doi.org/10.1021/jo00095a049.

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24

Berens, Ulrich, Dieter Leckel, and Susanne C. Oepen. "Transacetalization of Diethyl Tartrate with Acetals of .alpha.-Dicarbonyl Compounds: A Simple Access to a New Class of C2-Symmetric Auxiliaries and Ligands." Journal of Organic Chemistry 60, no. 25 (1995): 8204–8. http://dx.doi.org/10.1021/jo00130a019.

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25

SARASWATHY, V. G., and S. SANKARARAMAN. "ChemInform Abstract: Chemoselective Protection of Aldehydes as Dithioacetals in Lithium Perchlorate-Diethyl Ether Medium. Evidence for the Formation of Oxocarbenium Ion Intermediate from Acetals." ChemInform 26, no. 6 (2010): no. http://dx.doi.org/10.1002/chin.199506075.

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26

Ishida, Shintaro, Masayasu Ito, Hiroaki Horiuchi, Hiroshi Hiratsuka, Soshi Shiraishi, and Soichiro Kyushin. "Synthesis and properties of 5,10,15,20-tetrakis[4-(alkoxysilyl)phenyl]porphyrins: an application of selective deprotection of benzaldehyde diethyl acetals in the presence of alkoxysilyl groups." Dalton Transactions 39, no. 39 (2010): 9421. http://dx.doi.org/10.1039/c0dt00427h.

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27

BERENS, U., D. LECKEL та S. C. OEPEN. "ChemInform Abstract: Transacetalization of Diethyl Tartrate with Acetals of α- Dicarbonyl Compounds: A Simple Access to a New Class of C2-Symmetric Auxiliaries and Ligands." ChemInform 27, № 22 (2010): no. http://dx.doi.org/10.1002/chin.199622157.

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28

Kovalenko, Alexander, Jana Honová, Martin Vala, et al. "Effect of the Side Chains and Anode Material on Thermal Stability and Performance of Bulk-Heterojunction Solar Cells Using DPP(TBFu)2Derivatives as Donor Materials." International Journal of Photoenergy 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/734917.

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An optimized fabrication of bulk-heterojunction solar cells (BHJ SCs) based on previously reported diketopyrrolopyrrole donor, ethyl-hexylated DPP(TBFu)2, as well as two new DPP(TBFu)2derivatives with ethyl-hexyl acetate and diethyl acetal solubilizing side-chains and PC60BM as an acceptor is demonstrated. Slow gradual annealing of the solar cell causing the effective donor-acceptor reorganization, and as a result higher power conversion efficiency (PCE), is described. By replacing a hole transporting layer PEDOT:PSS with MoO3we obtained higher PCE values as well as higher thermal stability of

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29

Grieco, Paul A., Jon L. Collins, and Kenneth J. Henry. "Direct substitution of secondary allylic alcohols with O-silylated ketene acetals in 3.0 M lithium perchlorate-diethyl ether - An alternative to the [1,3] sigmatropic rearrangement of allyl vinyl ethers." Tetrahedron Letters 33, no. 33 (1992): 4735–38. http://dx.doi.org/10.1016/s0040-4039(00)61272-8.

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30

Gotkowska, Joanna. "Bromoacetaldehyde Diethyl Acetal." Synlett 26, no. 15 (2015): 2185–86. http://dx.doi.org/10.1055/s-0034-1381164.

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31

Turgunalieva, Daria M., Alena L. Stalinskaya, Ilya I. Kulakov, et al. "Multicomponent Synthesis of Unsymmetrical Derivatives of 4-Methyl-Substituted 5-Nitropyridines." Processes 11, no. 2 (2023): 576. http://dx.doi.org/10.3390/pr11020576.

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The multicomponent reaction of 2-nitroacetophenone (or nitroacetone), acetaldehyde diethyl acetal, β-dicarbonyl compound, and ammonium acetate in an acetic acid solution allowed the acquisition of previously undescribed 4-methyl-substituted derivatives of 5-nitro-1,4-dihydropyridine in satisfactory yields. The oxidation of the obtained 5-nitro-1,4-dihydropyridine derivatives resulted in the corresponding 2,4-dimethyl-5-nitropyridines. In addition, for the first time in the synthesis of unsymmetrical 1,4-dihydropyridines by the Hantzsch reaction acetaldehyde, diethyl acetal was used as a source

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32

GRIECO, P. A., J. L. COLLINS, and K. J. JUN HENRY. "ChemInform Abstract: Direct Substitution of Secondary Allylic Alcohols with O-Silylated Ketene acetals in 3.0 M Lithium Perchlorate-Diethyl Ether. An Alternative to the (1.3)Sigmatropic Rearrangement of Allyl Vinyl Ethers." ChemInform 24, no. 1 (2010): no. http://dx.doi.org/10.1002/chin.199301150.

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33

Iwai, Kento, Akari Hikasa, Kotaro Yoshioka, Shinki Tani, Kazuto Umezu, and Nagatoshi Nishiwaki. "Synthesis of tricarbonylated propargylamine and conversion to 2,5-disubstituted oxazole-4-carboxylates." Beilstein Journal of Organic Chemistry 20 (November 6, 2024): 2827–33. http://dx.doi.org/10.3762/bjoc.20.238.

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The N,O-acetal derived from diethyl mesoxalate (DEMO) undergoes elimination of acetic acid upon treatment with a base, leading to the formation of N-acylimine in situ. Lithium acetylide readily attacks the imino group to afford N,1,1-tricarbonylated propargylamines. When the resulting propargylamine reacts with butyllithium, ring closure occurs between the ethynyl and carbamoyl groups, yielding 2,5-disubstituted oxazole-4-carboxylates. This cyclization also occurs when the propargylamine is heated with ammonium acetate, resulting in double activation.

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34

Rude, Richard A., James T. Peeler, and Norris G. Risty. "Comparison of Diethyl Ether and Ethyl Acetate as Extracting Agents for Recovery of Ascaris spp. and Trichuris spp. Eggs." Journal of AOAC INTERNATIONAL 70, no. 6 (1987): 1000–1002. http://dx.doi.org/10.1093/jaoac/70.6.1000.

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Abstract Ethyl acetate and diethyl ether were compared for their ability to recover Ascaris spp. and Trichuris spp. eggs from seeded milorganite, liquid sludge, and cabbage. Concentrations of 10,100, and 1000 eggs/ 10 g test sample were prepared for 20 replicates of each product. The use of diethyl ether yielded fewer eggs/10 g than did ethyl acetate in 5 of 6 sets of data. For Ascaris spp., recovery from cabbage was 10 times higher with ethyl acetate at the higher concentration than with diethyl ether. For Trichuris spp., recovery from liquid sludge was slightly higher with diethyl ether for

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35

Aldrich, Jeffrey R., Qing-He Zhang, and Aijun Zhang. "Synergistic Chemical Attraction of the Eastern Yellowjacket, Vespula maculifrons (Hymenoptera: Vespidae)." Journal of Entomological Science 39, no. 4 (2004): 643–53. http://dx.doi.org/10.18474/0749-8004-39.4.643.

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Combinations of (E)-2-hexenal diethyl acetal, racemic α-terpineol or linalool, with or without benzyl alcohol incorporated into polyvinyl chloride attracted wasps in the Vespula vulgaris species group, including the Eastern, Vespula maculifrons (Buysson), and German, V. germanica (F.), yellowjackets. (E)-2-Hexenal diethyl acetal degrades to release (E)-2-hexenal (the active attractant form) and ethanol, which may help kill yellowjackets caught in the water inside the traps used for testing. Combining the (E)-2-hexenal diethyl acetal/α-terpineol or linalool mixtures with another blend previousl

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36

Kloc, Amabille Petza, Eleni Grilla, Claudia A. Capeletto, Maria Papadaki, and Marcos L. Corazza. "Phase equilibrium measurements and thermodynamic modeling of {CO2 + diethyl succinate + cosolvent} systems." Fluid Phase Equilibria (2019) 502 (August 16, 2019): 1–9. https://doi.org/10.5281/zenodo.3827118.

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This work reports experimental phase equilibrium data for the binary systems {CO<sub>2</sub>(1) + diethyl succinate(2)} and {CO<sub>2</sub>(1) + ethyl acetate(2)}, and for the ternary systems {CO<sub>2</sub>(1) + diethyl succinate(2) + ethanol(3)} and {CO<sub>2</sub>(1) + diethyl succinate(2) + ethyl acetate(3)}. The experiments for the binary system {CO<sub>2</sub>(1) + diethyl succinate(2)} were carried out at temperatures ranging from 308 K to 358 K, and temperatures ranging from 303 K to 343 K for {CO

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37

Tarabanko, Valery E., Irina L. Simakova, Marina A. Smirnova, and Konstantin L. Kaygorodov. "Catalytic Hydrogenation of Furfural Diethyl Acetal to Ethyl Furfuryl Ether." Journal of Siberian Federal University. Chemistry 14, no. 3 (2021): 281–89. http://dx.doi.org/10.17516/1998-2836-0237.

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The process of catalytic hydrogenation of furfural diethyl acetal to ethyl furfuryl ether on the different catalysts (palladium, palladium-rhenium and copper-ruthenium on Sibunit in reduced forms) was studied. It was found that hydrogenation of the furan ring with the formation of THF diethyl acetal occurs on all the catalysts. Ethyl furfuryl ether becomes the main product while carrying on the second hydrogenation cycle on spent palladium catalyst (yield and selectivity up to 55 % and 85 %, respectively)

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38

Sastre, Juan A. López, José Molina Molina, Dolores Portal Olea, and Cristina Romero-Avila. "A new synthesis of 2,5-anhydro-D-mannose derivatives." Canadian Journal of Chemistry 66, no. 12 (1988): 2975–80. http://dx.doi.org/10.1139/v88-462.

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Penta-O-acetyl-D-glucose diethyl dithioacetal monoxide 3 was obtained by oxidation of penta-O-acetyl-D-glucose diethyl dithioacetal 2 with 3-chloroperbenzoic acid. By reaction of 3 with sodium methoxide in methanol and further acetylation, 3,4,6-tri-O-acetyl-2,5-anhydro-D-mannose-diethyl dithioacetal monoxide 8 and the reduction product 3,4,6-tri-O-acetyl-2,5-anhydro-1,1-bis(ethylthio)-1-deoxy-D-arabino-hex-1-enitol 4 were obtained. Reduction of 8 yielded the corresponding dithioacetal derivative 9, which was converted to 3,4,6-tri-O-acetyl-2,5-anhydro-D-mannose diethyl acetal 11.

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39

Hunt, Kevin W., and Paul A. Grieco. "ChemInform Abstract: Oxabicyclo[3.2.1]octenes in Organic Synthesis-Direct Ring Opening of Oxabicyclo[3.2.1] Systems Employing Silyl Ketene Acetals in Concentrated Solution of Lithium Perchlorate-Diethyl Ether: Application to the Synthesis of the C(19)-C(2." ChemInform 32, no. 21 (2010): no. http://dx.doi.org/10.1002/chin.200121042.

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40

YAKOP, FARAZIMAH, MALAI HANITI SHEIKH ABDUL HAMID, NORHAYATI AHMAD, MOHAMED ABDUL MAJID, MANOHARAN KARUPPIAH PILLAI, and HUSSEIN TAHA. "PHYTOCHEMICAL SCREENING, ANTIOXIDANT AND ANTIBACTERIAL ACTIVITIES OF EXTRACTS AND FRACTIONS OF Dillenia suffruticosa LEAVES." Malaysian Applied Biology 49, no. 1 (2020): 121–30. http://dx.doi.org/10.55230/mabjournal.v49i1.1663.

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Dillenia suffruticosa or ‘Simpur bini’ is known to have ethnomedicinal properties and had been used traditionally to heal wounds, relieve fever and rheumatism. There has been limited studies carried out on this species, therefore, this study aims to evaluate the phytochemical contents, antioxidant and antibacterial activities of aqueous extract, methanol extract and its fractions obtained from the leaves of D. suffruticosa. The dried leaves were extracted using methanol before successive solvent partitioning was carried out on the extract using hexane, chloroform, ethyl acetate and diethyl eth

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41

Astutiningsih, Christina, and Jesi Kristianti. "The Inhibitor Activity Test of Green Okra Fruit Fraction (Abelmoschus Esculentus) Against Candida Albicans." Science Midwifery 10, no. 3 (2022): 2102–9. http://dx.doi.org/10.35335/midwifery.v10i3.617.

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This study was done to analyze the inhibitory activity of green Okra Fruit fraction against Candida albicans. The green Okra fruit is originated from Cepiring, Kendal. Green Okra fruit is a vegetable that contains compounds including flavonoids, alkaloids, tannins, steroid, triterpenoids stapling that are able to provide antifungal activity. The green Okra fruit was remacerated with ethanol 80 % followed fractination with n-hexane, diethyl ether, and ethyl acetate . The n-hexane, diethyl eter and ethyl acetate Okra fruit can inhibitory activity against Candida albicans. The test method for inh

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42

Hunt, Kevin W., and Paul A. Grieco. "Oxabicyclo[3.2.1]octenes in Organic SynthesisDirect Ring Opening of Oxabicyclo[3.2.1] Systems Employing Silyl Ketene Acetals in Concentrated Solutions of Lithium Perchlorate−Diethyl Ether: Application to the Synthesis of the C(19)−C(27) Fragment of Rifamycin S." Organic Letters 3, no. 3 (2001): 481–84. http://dx.doi.org/10.1021/ol0003836.

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43

Guan, Wei, Yu Ping Liu, Zhi Wei Miao, De Li Shen, and Yu Cao. "Synthesis of Flavor 3-Methylthiopropionaldehyde Diethyl Acetal." Advanced Materials Research 335-336 (September 2011): 1352–57. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1352.

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3-Methylthiopropionaldehyde diethyl acetal was synthesized from the reaction of 3-methylthiopropional with ethanol and triethyl orthoformate. The effecting factors including the kinds of catalyst, the mole ratio of raw materials, the amount of catalyst and the reaction time were optimized. The structure of product was characterized by gas chromatography, infrared spectroscopy, mass spectrometry, and nuclear magnetic resonance. Additionally, the mechanism of the reaction was speculated; the odor characteristics were evaluated.

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44

Baarschers, William H., and James P. Vukmanich. "The chemistry of some methoxychlor derivatives." Canadian Journal of Chemistry 64, no. 5 (1986): 932–35. http://dx.doi.org/10.1139/v86-154.

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The preparation of 1-chloro-2,2-bis(p-methoxyphenyl)ethylene (3a) and of 1-chloro-2,2-bis(p-hydroxyphenyl)ethylene (3b), required for a study of the microbial degradation of methoxychlor (1a) was reinvestigated. The methoxy compound (3a) was readily obtained by alkaline dehydrohalogenation of 1,1-dichloro-2,2-bis(p-methoxyphenyl)ethane (2a), but similar treatment of 1,1-dichloro-2,2-bis(p-hydroxyphenyl)ethane (2b) gave a chlorine-free compound, characterized as the diethyl acetal of 2,2-bis(p-hydroxyphenylacetaldehyde (5a) on the basis of spectroscopic evidence and comparison with a model comp

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45

Paleti, Gidyonu, Nagaiah Peddinti, Naveen Gajula, Vasikerappa Kadharabenchi, Kamaraju Seetha Rama Rao, and David Raju Burri. "Direct ethanol condensation to diethyl acetal in the vapour phase at atmospheric pressure over CuNP/SBA-15 catalysts." New Journal of Chemistry 43, no. 25 (2019): 10003–11. http://dx.doi.org/10.1039/c9nj02287b.

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Kusumaningsih, Triana, Muhammad Widyo Wartono, and Nais Puji Wijanarti. "Isolation and Elucidation Structure of 28-Hydroxy-3-Friedelanone of Nyamplung (Callophyllum inophyllum, Linn.) Leaves." Journal of Pure and Applied Chemistry Research 9, no. 2 (2020): 117–25. http://dx.doi.org/10.21776/ub.jpacr.2020.009.02.518.

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The isolation triterpenoid from Nyamplung (Callophyllum inophyllum, Linn.) leaves has been conducted. The isolation was employed by maceration using ethanol as solvent and liquids extraction using ethyl acetate. Ethyl acetate extract was partitioned successively using nonpolar solvent with hexane, dichloromethane, and diethyl ether, respectively. The diethyl ether extract was purified by column chromatography. The isolated compound of fraction D1 was obtained as white solids crystal with yield of 0.0035%. The isolated compound was determined based on the FTIR, 1HNMR, 13CNMR, HSQC, and HMBC spe

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Rádl, Stanislav, and Lenka Kovářová. "Preparation of Some Substituted 9,10-Dihydro-1-hydroxy-9-oxoacridine Derivatives." Collection of Czechoslovak Chemical Communications 57, no. 1 (1992): 212–15. http://dx.doi.org/10.1135/cccc19920212.

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In connection with our research into antibacterial fluoroquinolones of a general formula I we were interested in similar 1-hydroxy-acridines II. Our synthetic strategy was based on a recent finding that ethyl 2-(1,4-dihydro-4-oxoquinolin-2-yl) acetate reacted at 180 °C with diethyl ethoxymethylene-malonate providing diethyl 9,10-dihydro-1-hydroxy-9-oxoacridine-2,4-dicarboxylate.

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Grindley, T. Bruce, and Srihari Kusuma. "Kinetic benzylidenation. Part II. Rearrangement of the kinetic products from benzylidenation of aldose diethyl dithioacetals." Canadian Journal of Chemistry 64, no. 12 (1986): 2397–403. http://dx.doi.org/10.1139/v86-396.

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Terminal five-membered O-benzylidene derivatives of aldose diethyl dithioacetals can be rearranged at room temperature in N,N-dimethylformamide, often in high yields. Derivatives with the arabino configuration for their three terminal secondary hydroxyl groups, i.e. D-glucose, D-mannose, and D-arabinose derivatives, rearranged to structures containing terminal six-membered O-benzylidene rings. 4,5-O-Benzylidene-D-ribose diethyl dithioacetal rearranged chiefly to the 2,4 isomer, which was obtained by crystallization. Chromatography yielded some of the 3,5 isomer. 5,6-O-Benzylidene-D-galactose d

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Ouahrouch, Abdelaaziz, Moha Taourirte, Hassan Bihi Lazrek, Mohamed El Azhari, Joachim Engels та Jan Bats. "Synthesis and structural characterization of four related α-phosphonates". Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1019. http://dx.doi.org/10.1107/s2053273314089803.

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α-Aminophosphonates are structural analogues of natural amino acids. They have been the subject of considerable attention due to their potential biological activities. They may be applied as enzyme inhibitors , antibacterial agents , antitumour agents or antiviral agents [4]. α -Aminophosphonates can be synthesized via the Kabachnik–Fields reaction [5] by the coupling of a carbonyl, an amine and a dialkyl phosphite unit. We report here the synthesis and crystal structures of four diethyl [(arylamino)(4-ethynylphenyl) methyl] phosphonate derivatives, namely diethyl [(4-bromoanilino) (4-ethynyl-

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Dange, S. P. "THERMODYNAMIC PROPERTIES OF TERNARY LIQUID MIXTURE OF TOCOPHEROL ACETATE WITH CHLOROFORM AND DIETHYL ETHER AT 293 K." International Journal of Advanced Research 12, no. 05 (2024): 682–86. http://dx.doi.org/10.21474/ijar01/18771.

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The reported study, measured the ultrasonic velocity (u), density (ÃÂ) and viscosity (ÃŽÂ·) of ternary liquid mixtures of ÃŽÂ±-Tocopherol acetate with chloroform and diethyl ether in the concentration range (0 to 0.1 M) at 293K. These experimental parameters can be used to calculate various thermodynamic parameters like free volume (Vf), internal pressure (ÃÂ€in), Vander-Wall Constant (b) and Gibbs free energy (Ã¢ÂˆÂ†G*) etc. to identify the strength of molecular interaction. The results so obtained support the formation of complex structure and molecular aggregation through intermolecular

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