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Journal articles on the topic 'Stobbe condensation'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Banerjee, Shubhra, Ravibabu A. Tayade, and Bhagyashree D. Sharma. "Green Synthesis of Acid Esters from Furfural via Stobbe Condensation." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/152370.

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Solvent-free Stobbe condensation of furfural1with dimethyl succinate2under anhydrous conditions at room temperature using dry-solid potassium tertiary butoxide gave 3-carbomethoxy, 4-furyl-3-butenoic acid3, which upon methylation followed by Stobbe condensation reaction with different aldehydes and/or ketones under anhydrous conditions at room temperature afforded substituted carbomethoxy acids5a–f. These acid ester products were saponified to the corresponding dicarboxylic acids6a–fwhich are useful in the synthesis of photochromic fulgides.

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2

GEETA, GUPTA, and BANERJEE SHUBHRA. "Cyclisation of Stobbe Condensation Products." Journal of Indian Chemical Society Vol. 68, Feb 1991 (1991): 100–102. https://doi.org/10.5281/zenodo.6133601.

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Department of Chemistry, Institute of Science, Nagpur-440 001 <em>Manuscript received 10 April 1990, revised 10 October 1990, accepted 14 January 1991</em> STOBBE condensation of benzhydrilidenesuccinatea with ketones gave methyl 2-benzhydrilidene-3-carboxy-3-alkylidene butenoate which on saponification yielded 2-benzhydrilidene-3-carboxy-3-alkylidene butenoic acids (2e--h). In general, <em>E-s-trans</em>-structure,.was fixed for these acidsl. However, a free rotation is possible at C-C single bond between two double bonds giving possibility of <em>s-cis</em>-orientation to

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3

GEETA, GUPTA, and BANERJEE SHUBHRA. "Stobbe Condensation with Ethyl Methyl Ketone." Journal of Indian Chemical Society Vol. 68, Jun 1991 (1991): 362–63. https://doi.org/10.5281/zenodo.6157952.

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Department of Chemistry, Institute of Science, Nagpur-440 001 <em>Manuscript received 29 October 1990, revised 1 April 1991, </em><em>accepted 13 May 1991</em> Stobbe Condensation with Ethyl Methyl Ketone.

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4

Cow, Christopher, Carmen Leung, and James L. Charlton. "Antiviral activity of arylnaphthalene and aryldihydronaphthalene lignans." Canadian Journal of Chemistry 78, no. 5 (2000): 553–61. http://dx.doi.org/10.1139/v00-059.

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A practical method for large scale synthesis of 1-arylnaphthalene and 1-aryl-1,2-dihydronaphthalene lignans is described. The method makes use of the classic Stobbe condensation followed by regioselective reactions that provide access to both the common and retrolactone lignans, e.g., 2 and 3. A total of 25 compounds, many of which are known natural products, were prepared and their antiviral activity against human cytomegalovirus measured.Key words: lignan, Stobbe, arylnaphthalene, antiviral.

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5

F., A. YASSIN, A. AHMED GAMAL, and Y. MOSTAFA H. "Synthesis of some New Pyridazinonyl, Naphthyl and Benzofluorenonyl Derivatives via Stobbe Condensation Reaction." Journal of Indian Chemical Society Vol. 73, Nov 1996 (1996): 620–22. https://doi.org/10.5281/zenodo.5918292.

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Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt <em>Manuscript received 10 January 1994, revised 27 January 1995, accepted 2 March 1995</em> Synthesis of some New Pyridazinonyl, Naphthyl and Benzofluorenonyl Derivatives via Stobbe Condensation Reaction.

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6

Tanaka, Koichi, Teizo Sugino, and Fumio Toda. "Selective Stobbe condensation under solvent-free conditions." Green Chemistry 2, no. 6 (2000): 303–4. http://dx.doi.org/10.1039/b006565j.

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7

GUPTA, G., and S. BANERJEE. "ChemInform Abstract: Cyclization of Stobbe Condensation Products." ChemInform 23, no. 25 (2010): no. http://dx.doi.org/10.1002/chin.199225136.

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8

Shubhra, Banerjee, and D. Sharma Bhagyashree. "Facile synthesis of chalcone derivatized hexatrienes via Stobbe condensation." Journal of Indian Chemical Society Vol. 89, May 2012 (2012): 647–52. https://doi.org/10.5281/zenodo.5763203.

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Department of Chemistry, Institute of Science, Nagpur-440 001, Maharashtra, India <em>E-mail</em> : shubhrais@rediffmail.com <em>Manuscript received 10 March 2010, revised 10 August 201 I. accepted 19 September 2011</em> In course of studies on the solvent-free Stobbe condensation, the acid-esters, methyl hydrogen 2-(1,3- diphenylpropen-3-ylidene)butanedioate and methyl hydrogen 2-alkylidene-3-(1,3-diphenylpropen-3-ylidene)butanedioate were synthesized, which could be successfully saponified to the corresponding diacid; 2-(1,3-diphenylpropen-3-ylidene)butane dioic acid and 2-alkylidene-3-(1,3-

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9

Baghos, Victorine B., S. H. Doss, and E. F. Eskander. "SYNTHESIS OF POTENTIALLY BIOLOGICALLY ACTIVE COMPOUNDSviaTHE STOBBE CONDENSATION." Organic Preparations and Procedures International 25, no. 3 (1993): 301–7. http://dx.doi.org/10.1080/00304949309457964.

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10

GUPTA, G., and S. BANERJEE. "ChemInform Abstract: Stobbe Condensation with Ethyl Methyl Ketone." ChemInform 23, no. 17 (2010): no. http://dx.doi.org/10.1002/chin.199217126.

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11

SABA, JABBAR, and GUPTA GEETA. "Study of Dissociation Constants of Stobbe Condensation and Cyclisation Products." Journal of Indian Chemical Society Vol. 68, Jan 1991 (1991): 60–61. https://doi.org/10.5281/zenodo.6100714.

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Department of Chemistry, Institute of Science, Nagpur-440 001 <em>Manuscript received 10 April 1990, revised 10 October 1990 accepted 28 November 1990</em> In the course of studies of fulgides for their photo chemical properties<sup>1</sup>, studies of their Friedel-Crafts cyclised products<sup>2</sup>, products obtained from cyclation of the diacids (obtained from the hydrolysis of anhydrides) with various cyclisation reagents<sup>3</sup>, and the Stobbe reaction products<sup>4</sup> were studied for their dissociation constants.

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12

Mcfadden, HG, RLN Harris, and CLD Jenkins. "Potential Inhibitors of Phosphoenolpyruvate (PEP) Carboxylase: Phosphonic Acid Substrate-Analogs Derived From Stobbe-Type Condensations of Ethyl 3-(Diethoxyphosphinoyl)propanoate." Australian Journal of Chemistry 40, no. 10 (1987): 1619. http://dx.doi.org/10.1071/ch9871619.

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Phosphonic acid analogues of 2-(dihydroxyphosphinoy1oxy)propenoic acid (PEP), the substrate of PEP carboxylase, were prepared and tested as inhibitors of the enzyme. The required triacids were obtained by mild hydrolysis of the partial esters prepared by Stobbe-like condensation of aryl and alkyl carbonyl compounds with ethyl 3-(diethoxyphosphinoyl)propanoate. Condensations with aldehydes gave predominantly (9-propenoates while reactions with ketones gave mixtures of (E)- and (Z)-isomers and also, in some cases, products with the double bond rearranged to the &position. Although compounds

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13

ZERRER, R., and G. SIMCHEN. "ChemInform Abstract: The “Silyl-Stobbe Condensation”. Synthesis of Fulgimides." ChemInform 24, no. 7 (2010): no. http://dx.doi.org/10.1002/chin.199307114.

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14

Yadav, Hanuman Singh, and Saba Gani. "Antioxident Activity of Greenly Synthesized Anhydride." International Journal of Trend in Scientific Research and Development 2, no. 1 (2017): 310–15. https://doi.org/10.31142/ijtsrd5847.

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One pot synthesis of acid esters by Stobbe condensation of alkylidene arylidene succinates and aldehydes or ketones, their subsequent hydrolysis to diacids hasreported. TheStobbe condensation of various aromatic aldehydes or ketones with dimethyl succinate gives different types of cyclized productsthrough green approach. The improved yields of Fulgenic acid and its anhydridehave observed by the green approach method as compared with other classical methods employed so far.The antioxidant activity of anhydride compounds have done by using DPPH. Yadav Hanuman Singh | Gani Saba "Antioxident

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15

Liu, Jin, and Neil R. Brooks. "Stereoselective Stobbe Condensation of Ethyl Methyl Diphenylmethylenesuccinate with Aromatic Aldehydes." Organic Letters 4, no. 20 (2002): 3521–24. http://dx.doi.org/10.1021/ol026668v.

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16

Singh, Ashok Kumar. "Synthesis of 4-Aryl-3-ethoxycarbonyl-1-oxo-1,2,3,4-tetrahydronaphthalene: An Imporant Frame Work in Lignan Family." Journal of Nepal Chemical Society 27 (August 22, 2012): 86–93. http://dx.doi.org/10.3126/jncs.v27i1.6666.

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4,4-diaryl-3-ethoxycarbonyl-3-butenoic acid (2a-d, Scheme 1) has been synthesized by Stobbe condensation of substituted benzophenones 1a-d with t-potassium butoxide and diethyl succinate. Compounds 2a-d on reduction with sodium amalgum furnished 4,4-diaryl-3-ethoxycarbonyl-3-butanoic acid 3a-d, which on intramolecular cyclization with polyphosphoric acid gave target compounds 4-aryl-3-ethoxycarbonyl-1-oxo--1,2,3,4-tetrahydronaphthalene 4a-d.DOI: http://dx.doi.org/10.3126/jncs.v27i1.6666 J. Nepal Chem. Soc., Vol. 27, 2011 86-93

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17

Xia, Yamu, Lijia Zou, Jiahong Zhang, and Wen Zhang. "Total Synthesis of Leoligin from Edelweiss Roots." Journal of Chemical Research 42, no. 7 (2018): 350–53. http://dx.doi.org/10.3184/174751918x15314826114010.

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Leoligin, a tetrahydrofuran lignan isolated from the root of the edelweiss plant, was synthesised from veratraldehyde (2 mol), diethyl succinate and 2-methyl-(Z)-2-butenoic acid. Initially, veratraldehyde and diethyl succinate underwent a Stobbe condensation to yield a C6-C5 acid which, after esterification, was condensed with a second molecule of veratraldehyde to generate a 2,3,4-trisubsituted γ-butyrolactone intermediate. Two reduction steps yielded a triol, which was ring-closed with tosyl chloride to form a hydroxymethyl-tetrahydrofuran, esterification of which with 2-methyl-(Z)-2-butenoi

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18

El-Rayyes, Nizar, and Abdel-Jabbar Al-Johary. "The Stobbe condensation. 6. Reaction of aryl aldehydes with dimethyl adipate." Journal of Chemical & Engineering Data 32, no. 1 (1987): 123–25. http://dx.doi.org/10.1021/je00047a035.

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19

BAGHOS, V. B., S. H. DOSS, and E. F. ESKANDER. "ChemInform Abstract: Synthesis of Potentially Biologically Active Compounds via the Stobbe Condensation." ChemInform 24, no. 41 (2010): no. http://dx.doi.org/10.1002/chin.199341107.

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20

Schöttner, Matthias, Dietmar Ganßer, and Gerhard Spitelle. "Interaction of Lignans with Human Sex Hormone Binding Globulin (SHBG)." Zeitschrift für Naturforschung C 52, no. 11-12 (1997): 834–43. http://dx.doi.org/10.1515/znc-1997-11-1218.

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Abstract Lignans bind to sex hormone-binding globulin (SHBG ). The lignan with the highest binding affinity is (±)-3,4-divanillyltetrahydrofuran. In a double Stobbe condensation - without use of protecting groups - a wide variety of lignans with different substitution pattern in the aromatic and aliphatic part of the molecule was synthesized. These lignans were tested in a SHBG -binding assay which allowed to deduce the following relationship between structure and activity: 1) (±)-diastereoisomers are more active than meso compounds 2.) the 4-hydroxy- 3-methoxy (guajacyl) substitution pattern

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21

Yvon, Brigitte L., Probal K. Datta, Trung N. Le, and James L. Charlton. "ChemInform Abstract: Synthesis of Magnoshinin (VIIa) and Cyclogalgravin (VIIb): Modified Stobbe Condensation Reaction." ChemInform 32, no. 46 (2010): no. http://dx.doi.org/10.1002/chin.200146255.

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22

Lv, Ning Ning, An Guo Sang, and Yan Zhang. "Synthesis and Characterization of Indolylfulgide Photochromic Colorants." Advanced Materials Research 821-822 (September 2013): 522–26. http://dx.doi.org/10.4028/www.scientific.net/amr.821-822.522.

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This paper describes the synthesis of two photochromic 2-indolyl-fulgides by stobbe condensation of the corresponding 2-acyl-1,3-dimethyl-indole derivatives with diethyl isopropylidene succinate in the presence of hexamethyldisilazane potassium. The overall yields was up to 41% for 3 steps. Both prepared compounds are sensitive to UV light and change colors upon irradiation. And the two fulgides can be switched back and forth 100 times without obvious degradation. Thermal stabilities of the fulgides in acetonitrile at room temperature for 30 days and at 80 °C for 12 h were measured using UV-vi

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23

El-Rayyes, Nizar R., George H. Hovakeemian, and Abla F. Samara. "The Stobbe condensation. Part 5. Reactions of aryl aldehydes with .alpha.,.alpha.-disubstituted succinic esters." Journal of Chemical & Engineering Data 31, no. 3 (1986): 369–72. http://dx.doi.org/10.1021/je00045a033.

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24

YASSIN, F. A., G. A. AHMED, and H. Y. MOSTAFA. "ChemInform Abstract: Synthesis of Some New Pyridazinonyl, Naphthyl and Benzofluorenonyl Derivatives via Stobbe Condensation Reaction." ChemInform 28, no. 39 (2010): no. http://dx.doi.org/10.1002/chin.199739052.

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25

Eichler, Matthias C., David H. Grayson, Jonathan Huddleston, and Joseph P. O'Neill. "Stobbe-like condensation reactions of the anion of diethyl (2-carboethoxy)benzylphosphonate with some aromatic and heterocyclic aldehydes." Tetrahedron 70, no. 40 (2014): 7241–44. http://dx.doi.org/10.1016/j.tet.2014.07.001.

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26

Eichler, Matthias C., David H. Grayson, Jonathan Huddleston, and Joseph P. O'Neill. "ChemInform Abstract: Stobbe-Like Condensation Reactions of the Anion of Diethyl (2-Carboethoxy)benzylphosphonate with Some Aromatic and Heterocyclic Aldehydes." ChemInform 46, no. 10 (2015): no. http://dx.doi.org/10.1002/chin.201510247.

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27

Davidse, P. Adriaan, Jan L. M. Dillen, Anton M. Heyns, Tomasz A. Modro, and Petrus H. van Rooyen. "Photochromic systems. Part 1. Structural and spectroscopic study of photochromically active products of Stobbe condensation. 2,3-Dibenzylidenesuccinic acid and its anhydride." Canadian Journal of Chemistry 68, no. 5 (1990): 741–46. http://dx.doi.org/10.1139/v90-117.

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E,E-2,3-Dibenzylidenesuccinic acid (2) and its anhydride (1) were synthesized, their crystal structures and 1H and 13C nuclear magnetic resonance spectra were determined, and electron charge densities of carbon atoms were calculated. These results were related to the corresponding data available for E-cinnamic acid (3) in order to evaluate the effect of structural changes in a series 3 → 2 → 1 on the molecular parameters and spectroscopic properties of the cinnamic system. In the molecule of 2 most of the steric strain is released by the rotation about the C(α)—C(α′) bond giving rise to a stru

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28

F., G. BADDAR, N. BASYOUNI M., F. EI-NEWAIRY M. та H. GHALY E. "ᵧ.ᵧ-Disubstituted Itaconic Acids. Part Vll.1 The Stobbe Condensation of Benzyl-, p-Chlorobenzyl-, and p-Methoxybenzylphenyl Ketones with Diethyl Succinate". Journal of Indian Chemical Society Vol. 51, Jul 1974 (2022): 698–704. https://doi.org/10.5281/zenodo.6417065.

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Department of <em>Chemistry, </em>Faculty of Science, A' in Shams <em>University, Cairo, Egypt.</em> <em>Manuscript received 22 October 1973 ; acepted 23 May 1974.</em> <em>\(Cis \)</em>(Ph/Ar)-5-Aryl-3-ethoxycarbonyl-4-phenyl-pent-4-enoic acids were converted into ethyl <em>\(trans\)-</em>(Ph/Ar)<em><sup>-</sup> 5-aryl-3-</em>carboxy-4-phenyl-pent-4-enoute (14), (15) and (16), which have been cyclised<em> </em>to 1-acetoxy-naphthalenes (17), (18) <em>and </em>(19). <em>\(Cis\) </em>(Ph/ Ar)<em>-4, </em>5-Diphenyl- <em>and </em>cis (Ph/Ar)-4-phenyl-5-p-tolyl-pent-4-enoic acid anhydrides<em

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29

Lambat, Trimurti L., та Sujata S. Deo. "Basic ionic liquid [BMIM][OH] as heterogeneous catalyst mediated solvent-free Stobbe condensation applying grindstone technique for the synthesis of novel β-arylidene-β-benzoylpropionic acid derivatives". Journal of the Chinese Advanced Materials Society 5, № 2 (2017): 65–78. http://dx.doi.org/10.1080/22243682.2017.1288584.

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30

Al-Shihry, Shar Saad. "Synthesis and Crystal Structure of Overcrowded Non-photochromic Organometallic Fulgide." Sultan Qaboos University Journal for Science [SQUJS] 8, no. 2 (2003): 115. http://dx.doi.org/10.24200/squjs.vol8iss2pp115-120.

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Pure E-isomer overcrowded organometallic fulgide 1 was obtained by using successive Stobbe condensations between ketones and succinate diester. Upon irradiation with UV light at (366 nm) it did not cyclise photochemically to the 1,8a-dihydronaphthalene derivative (1,8a-DHN) 8. The structure of 7 was confirmed by X-ray crystallographic analysis.

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31

Owton, W. Martin, Peter T. Gallagher, and Antonio Juan-Montesinos. "tert-Butyl 3-Carboxyethyl-3-phosphonodiethylpropionate. A Novel Reagent for Stobbe-Like Condensations." Synthetic Communications 23, no. 15 (1993): 2119–25. http://dx.doi.org/10.1080/00397919308018605.

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32

OWTON, W. M., P. T. GALLAGHER, and A. JUAN-MONTESINOS. "ChemInform Abstract: tert-Butyl 3-Carboxyethyl-3-phosphonodiethylpropionate (III). A Novel Reagent for Stobbe-Like Condensations." ChemInform 25, no. 35 (2010): no. http://dx.doi.org/10.1002/chin.199435094.

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33

Singh, Harjit, Dolly, Swapandeep Singh Chimni, and Subodh Kumar. "Facile Synthesis of 5-(Substituted vinyl)-uracil Derivatives through Knoevenagel and Stobbe type Condensations of 5-Formyluracils." Journal of Chemical Research, no. 9 (1998): 544–45. http://dx.doi.org/10.1039/a802515k.

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34

Khlebtsov, B. N., and A. M. Burov. "Synthesis of Monodisperse Silica Particles by Controlled Regrowth." Colloid Journal 85, no. 3 (2023): 456–68. http://dx.doi.org/10.1134/s1061933x23600379.

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Abstract The development of a simple and reproducible method for the synthesis of monodisperse silica particles is of considerable interest from the point of view of their numerous applications in photonics, biosensing, and biomedicine. When using the well-known Stober method, there is a continuous formation and growth of seeds, which leads to the synthesis of polydisperse colloids. In this work, we used the method of successive growth of silica particles obtained by hydrolytic condensation of tetraethylorthosilicate in an alcoholic-aqueous medium using an alkaline catalyst. It is shown that t

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35

KHLEBTSOV, B. N., and A. M. BUROV. "SYNTHESIS OF MONODISPERSE SILICA PARTICLES BY CONTROLLED REGROWTH." Коллоидный журнал 85, no. 3 (2023): 376–89. http://dx.doi.org/10.31857/s0023291223600293.

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The development of a simple and reproducible method for the synthesis of monodisperse silica particles is of considerable interest from the point of view of their numerous applications in photonics, biosensing, and biomedicine. When using the well-known Stober method, there is a continuous formation and growth of seeds, which leads to the synthesis of polydisperse colloids. In this work, we used the method of successive growth of silica particles obtained by hydrolytic condensation of tetraethylorthosilicate in an alcoholic-aqueous medium using an alkaline catalyst. It is shown that this techn

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36

Nazeer, Elham, Aswany U R, and Shaiju S Dharan. "2, 3-Dioxoindoline Derivatives: Synthesis, Reactions and Exploring Pharmacological Activities." International Journal of Research and Review 9, no. 12 (2022): 109–23. http://dx.doi.org/10.52403/ijrr.20221212.

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Heterocyclic compounds represent an important class of organic compounds having vivid biological and pharmacological properties. These heterocyclic moieties, either individually or in fused form, are continuously used by researchers for the creation of new drugs due to their extensive biological profile. Isatin (1 H - indole-2,3-dione), also known as (2,3- dioxoindoline, indole quinine and indenedione), exhibits a broad range of biological activity and is therefore regarded as a bio-active heterocyclic moiety. Isatin derivatives are synthesized by using two common methods such as Sandmeyer’s a

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37

Al-Khuzaie, Mohammed G. A., Mahmood M. Fahad, and Ahmed Jalil Al-Safi. "A Review on Synthesis, Reaction and Biological Importance of Isatin Derivatives." Biomedicine and Chemical Sciences 3, no. 1 (2022): 193–206. http://dx.doi.org/10.48112/bcs.v1i3.221.

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Isatin is a heterocyclic nitrogen compound that has attracted much interest in recent years due to its diverse biological and pharmacological activities. It can be used in many medical and biological applications, such as antidiabetic, antibiotic, and anticancer agents. The isatin molecule can also be prepared from different substrates by various methods, such as the methods of Sandmeyer, Stolle, Gassman, Meanwell and Hewawasam and others. On the other hand, the isatin molecule can undergo various chemical reactions, such as oxidation, Friedel-Crafts reaction, ring expansion, aldol condensatio

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38

Mohammed, G. A. Al-Khuzaie, M. Fahad Mahmood, and Jalil Al-Safi Ahmed. "Synthesis, Reaction and Biological Importance of Isatin Derivatives." Biomedicine and Chemical Sciences, no. 3 (July 1, 2022): 193–206. https://doi.org/10.48112/bcs.v1i3.221.

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Isatin is a heterocyclic nitrogen compound that has attracted much interest in recent years due to its diverse biological and pharmacological activities. It can be used in many medical and biological applications, such as antidiabetic, antibiotic, and anticancer agents. The isatin molecule can also be prepared from different substrates by various methods, such as the methods of Sandmeyer, Stolle, Gassman, Meanwell and Hewawasam and others. On the other hand, the isatin molecule can undergo various chemical reactions, such as oxidation, Friedel-Crafts reaction, ring expansion, aldol condensatio

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39

Militello, María Paula, Luciano Tamborini, Diego F. Acevedo, and Cesar A. Barbero. "Towards Photothermal Acid Catalysts Using Eco-Sustainable Sulfonated Carbon Nanoparticles—Part II: Thermal and Photothermal Catalysis of Biodiesel Synthesis." C 10, no. 4 (2024): 94. http://dx.doi.org/10.3390/c10040094.

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The main goal of this work is to evaluate the ability of sulfonated carbon nanoparticles (SCNs) to induce photothermal catalysis of the biodiesel synthesis reaction (transesterification of natural triglycerides (TGs) with alcohols). Carbon nanoparticles (CNs) are produced by the carbonization of cross-linked resin nanoparticles (RNs). The RNs are produced by condensation of a phenol (resorcinol or natural tannin) with formaldehyde under ammonia catalysis (Stober method). The method produces nanoparticles, which are carbonized into carbon nanoparticles (CNs). The illumination of CNs increases t

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40

Steinbach, Julia C., Fabio Fait, Hermann A. Mayer, and Andreas Kandelbauer. "Monodisperse Porous Silica/Polymer Nanocomposite Microspheres with Tunable Silica Loading, Morphology and Porosity." International Journal of Molecular Sciences 23, no. 23 (2022): 14977. http://dx.doi.org/10.3390/ijms232314977.

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Hybrid organic/inorganic nanocomposites combine the distinct properties of the organic polymer and the inorganic filler, resulting in overall improved system properties. Monodisperse porous hybrid beads consisting of tetraethylene pentamine functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) particles and silica nanoparticles (SNPs) were synthesized under Stoeber sol-gel process conditions. A wide range of hybrid organic/silica nanocomposite materials with different material properties was generated. The effects of n(H2O)/n(TEOS) and c(NH3) on the hybrid bead propertie

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41

Pawan, D. Somavanshi and Yogesh U. Sathe. "Exploring the Synthesis Processes of Graphene Oxide and Silicon Dioxide Nanospheres: A Comprehensive Study." Journal Of The Textile Association (JTA) 85, no. 4 (2025): 1–7. https://doi.org/10.5281/zenodo.14608400.

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This work presents the synthesis and characterization of graphene oxide (GO), SiO₂ nanospheres, and SiO₂-graphene oxide (SiO₂-GO) hybrid materials. GO was synthesized through a modified Hummers’ method involving the oxidation and exfoliation of graphite in a strong acidic medium, followed by sonication, centrifugation, and vacuum drying. SiO₂ nanospheres were produced using the Stober method, which involves the controlled hydrolysis and condensation of tetraethyl orthosilicate (TEOS) in the presence of ethanol, water, and ammonium hydroxide. The resulting SiO₂ nanospheres were purified b

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42

Phuc, Dang Huu, and Vu Tri-Vien. "Surface coated red phosphors with silica nanoparticles and silica nanocomposites: performance modifications." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 20, no. 6 (2022): 1350–56. https://doi.org/10.12928/telkomnika.v20i6.24084.

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Surface coverings using nanomaterials of silica nanoparticles and poly (methyl methacrylate) – abbreviated “PMMA-silica nanomaterials” – are introduced to the Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> phosphor through four distinct approaches. The objective is to enhance Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> phosphorescence and prolonged sustainability. Using immerse-daubing along with sol-gel approach (Stober way), it is possible to have Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> phosphors covered with relatively-monodisperse nano-silica particl

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Inna, Trofimova, and Shpyrko Nikolay. "INVESTIGATING THE INFLUENCE OF VOLUMETRIC HYDROPHOBIZATION ON THE FORMATION OF PHASE COMPOSITION OF CEMENT STONE AND ITS PHYSICAL-MECHANICAL PROPERTIES." Eastern-European Journal of Enterprise Technologies 4, no. 6 (100) (2019): 32–38. https://doi.org/10.15587/1729-4061.2019.176430.

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We have examined the influence of the most widely used silicon-organic surface water repellent GKZH-11K on the physical-mechanical properties and the phase structure formation of cement is the fact that the introduction of the surface water repellent GKZH-11K to the composition of cement slurry leads to the formation of dispersive water-repellent films of various levels (size). These films adsorb at the surface of cement grains, as well as at the surface of hydrated components of cement particles, Са(ОН)<sub>2</sub>, calcium sulphoaluminates. It was determined that the disperse hydrophobic fil

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MAHMOUD, M. R., S. I. EL-NADGY, M. M. HABASHY, and F. A. EL-BASSIOUNY. "Stobbe Condensation Involving Diethyl-?,?-Dimethyl-Glutarate II." Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering, 1989, 115–21. http://dx.doi.org/10.1501/commub_0000000472.

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Charlton, James, Brigitte Yvon, Probal Datta, and Trung Le. "Synthesis of Magnoshinin and Cyclogalgravin: Modified Stobbe Condensation Reaction." Synthesis 2001, no. 10 (2004). http://dx.doi.org/10.1055/s-2001-16086.

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Banerjee, Shubhra, Ravibabu A. Tayde, and Bhagyashree D. Sharma. "ChemInform Abstract: Solvent-Free Stobbe Condensation: A Green Approach." ChemInform 40, no. 42 (2009). http://dx.doi.org/10.1002/chin.200942022.

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EL-RAYYES, N. R., G. H. HOVAKEEMIAN та A. F. SAMARA. "ChemInform Abstract: The Stobbe Condensation. Part 5. Reactions of Aryl Aldehydes with α,α-Disubstituted Succinic Esters." Chemischer Informationsdienst 17, № 46 (1986). http://dx.doi.org/10.1002/chin.198646098.

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BANERJEE, S. "ChemInform Abstract: Stobbe Condensation with Cyclopentanone and Synthesis of 3-Cyclopentylidene-4-oxo-1-phenyl-1,2-dehydrotetralene-1-carboxylic Acid." ChemInform 18, no. 12 (1987). http://dx.doi.org/10.1002/chin.198712167.

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ENAYAT, E. I., F. A. EL-BOSSİOUNY, H. A. ABDEF-HAMİT, and F. S. SAYED. "Stobbe Condensation Involving Diethyl Diglycollate with Furan 2- aldehyde and Thiophene 2- aldehyde Synthesis of Cyclopenteno -Furan and Cyclopenteno Thiophene Derivatives." Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering, 1985, 091–97. http://dx.doi.org/10.1501/commub_0000000243.

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Jiao, Shichao, and Joseph J. McCarthy. "A facile way of controlling capillary condensation: particle-based crystal." Materials Research Express, April 8, 2024. http://dx.doi.org/10.1088/2053-1591/ad3c15.

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Abstract To demonstrate a facile method to control capillary condensation via the design of confined geometric structures, we use a particle self-assembly technique to fabricate porous materials with well-defined pore sizes. Four groups of silica particles were synthesized using the modified Stober method, and these groups of particles were then arranged in closely packed structures. Quantitative predictions of capillary condensation were made based on the Kelvin equation and an approximation of the geometric structures of our closely packed samples. Experimental observations revealed that wat

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