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Journal articles on the topic 'Benzylene'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Sietzen, Malte, Sonja Batke, Patrick W. Antoni, Hubert Wadepohl, and Joachim Ballmann. "Benzylene-linked [PNP] scaffolds and their cyclometalated zirconium and hafnium complexes." Dalton Transactions 46, no. 18 (2017): 5816–34. http://dx.doi.org/10.1039/c7dt00413c.

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The benzylene-linked [PNP] ligands HN(CH<sub>2</sub>-o-C<sub>6</sub>H<sub>4</sub>PPh<sub>2</sub>)<sub>2</sub> and HN(C<sub>6</sub>H<sub>4</sub>-o-CH<sub>2</sub>PPh<sub>2</sub>)<sub>2</sub> were employed for the synthesis of the cyclometalated complexes κ<sup>4</sup>-[PNCP]Zr(η<sup>6</sup>-C<sub>7</sub>H<sub>8</sub>) and κ<sup>4</sup>-[PNCP]M(H)(κ<sup>3</sup>-Et<sub>3</sub>BH) (M = Zr, Hf).

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2

Jousseaume, Bernard, Hocine Riague, Thierry Toupance, Mohamed Lahcini, Philip Mountford, and Ben R. Tyrrell. "A General Route to Alkylene-, Arylene-, or Benzylene-Bridged Ditin Hexachlorides and Hexaalkynides." Organometallics 21, no. 22 (2002): 4590–94. http://dx.doi.org/10.1021/om0202468.

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3

Wei, Shasha, Xue Li, Congbin Fan, Gang Liu, and Shouzhi Pu. "A multiple switching diarylethene dimer with a bis(benzylene)amine-linked naphthalimide unit." Tetrahedron 73, no. 43 (2017): 6164–71. http://dx.doi.org/10.1016/j.tet.2017.09.010.

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4

Batke, Sonja, Malte Sietzen, Hubert Wadepohl, and Joachim Ballmann. "A Tripodal Benzylene-Linked Trisamidophosphine Ligand Scaffold: Synthesis and Coordination Chemistry with Group(IV) Metals." Inorganic Chemistry 53, no. 8 (2014): 4144–53. http://dx.doi.org/10.1021/ic500163c.

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5

Shaterian, Hamid Reza, and Moones Honarmand. "Uncatalyzed, One-pot Synthesis of 3,3′-(Benzylene)- bis(4-hydroxy-2H-chromen-2-one) Derivatives under Thermal Solvent-free Conditions." Chinese Journal of Chemistry 27, no. 9 (2009): 1795–800. http://dx.doi.org/10.1002/cjoc.200990302.

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6

Batke, Sonja, Malte Sietzen, Lukas Merz, Hubert Wadepohl, and Joachim Ballmann. "Closely Related Benzylene-Linked Diamidophosphine Scaffolds and Their Zirconium and Hafnium Complexes: How Small Changes of the Ligand Result in Different Complex Stabilities and Reactivities." Organometallics 35, no. 13 (2016): 2294–308. http://dx.doi.org/10.1021/acs.organomet.6b00384.

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7

Liu, Xing, Yalou Wang, Guanzhong Wu, Jiangchuan Li, and Xiaoyan Wu. "Design, synthesis and hypoglycemic activity of 3-methyl-1-phenyl-4-{4-[(5-methyl-2-phenyloxazol-4-yl)methoxy]benzylene(benzyl)}-2-pyrazol-5-one." Frontiers of Chemistry in China 3, no. 1 (2008): 118–23. http://dx.doi.org/10.1007/s11458-008-0006-3.

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8

Carden, Robert G., and Ross A. Widenhoefer. "Gold Sulfonium Benzylide Complexes Undergo Efficient Benzylidene Transfer to Alkenes." Chemistry – A European Journal 25, no. 47 (2019): 11026–30. http://dx.doi.org/10.1002/chem.201902845.

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9

Noguiera, Thais C. M., Alessandra C. Pinheiro, James L. Wardell, Marcus V. N. de Souza, Jordan P. Abberley, and William T. A. Harrison. "Different hydrogen-bonded chains in the crystal structures of three alkylN-[(E)-1-(2-benzylidene-1-methylhydrazinyl)-3-hydroxy-1-oxopropan-2-yl]carbamates." Acta Crystallographica Section E Crystallographic Communications 71, no. 7 (2015): 752–56. http://dx.doi.org/10.1107/s2056989015010440.

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The crystal structures of three methylated hydrazine carbamate derivatives prepared by multi-step syntheses from L-serine are presented, namely benzylN-{(E)-1-[2-(4-cyanobenzylidene)-1-methylhydrazinyl]-3-hydroxy-1-oxopropan-2-yl}carbamate, C20H20N4O4,tert-butylN-{(E)-1-[2-(4-cyanobenzylidene)-1-methylhydrazinyl]-3-hydroxy-1-oxopropan-2-yl}carbamate, C17H22N4O4, andtert-butylN-[(E)-1-(2-benzylidene-1-methylhydrazinyl)-3-hydroxy-1-oxopropan-2-yl]carbamate, C16H23N3O4. One of them shows that an unexpected racemization has occurred during the mild-condition methylation reaction. In each crystal s

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10

Engelhardt, LM, M. Mocerino, RV Stick, and AH White. "A Curious By-Product in the Tipson-Cohen Reaction of a Carbohydrate Ditosylate." Australian Journal of Chemistry 43, no. 6 (1990): 1111. http://dx.doi.org/10.1071/ch9901111.

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The treatment of methyl 4,6-O-benzylidene-2,3-di-O-p-toluenesulfony-β- D- galactoside , methyl 4,6-O-benzylidene-3-O-benzenesulfonyl-2-O-p- toluenesufonyl-β-D-galactoside and methyl 4,6-O-benzylidene-2-O- benzenesulfonyl-3-O-p-touenesulfonyl-β-D-galactoside under Tipson-Cohen conditions (Zn/ Nal/dimethylformamide ) gives mainly the alkene, methyl 4,6-O-benzylidene-2,3-dideoxy-β-D-threo-hex-2-enoside. However, the first two glycosides give methyl 4,6-O-benzylidene-3-deoxy-3-C-(m-methylphenyl )-β-D- galactoside, and the last, methyl 4,6-O-benzylidene- 3-deoxy-3-C-phenyl-β-D-gaactoside, as minor

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11

Kuszmann, J., and E. Gacsbaitz. "O-Benzylidene Derivatives of D-Arabinose Diethyl and Dipropyl Dithioacetal." Australian Journal of Chemistry 49, no. 3 (1996): 273. http://dx.doi.org/10.1071/ch9960273.

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Benzylidenation of D-arabinose diethyl and dipropyl dithioacetals with α,α-dimethoxytoluene in the presence of p-toluenesulfonic acid has been studied in detail. Under kinetic control the two terminal dioxolan -type 4,5-O-(R)- and 4,5-O-(S)-benzylidene diastereomers are formed first which are in equilibrium with each other In the thermodynamic phase of the reaction the corresponding dioxan -type 3,5-O-(R)- benzylidene isomer is formed too, but all three monobenzylidene isomers are gradually converted into the four possible dioxolan -type 2,3 : 4,5-di-O benzylidene diastereomers . The dioxan -t

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12

Ajeetha, N., and V. G. K. M. Pisipati. "The Influence of the Position of Oxygen on the Phase Behaviour of Benzylidene Anilines." Zeitschrift für Naturforschung A 58, no. 12 (2003): 735–37. http://dx.doi.org/10.1515/zna-2003-1209.

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Synthesis and Characterization of N (p-n-alkyl benzylidene)-p-n-alkoxy anilines (n.Om), N (p-nalkoxy benzylidene)-p-n-alkoxy anilines (nO.Om) and N (p-n-alkyl benzylidene)-p-n-alkyl anilines (n.m), where n = m = either 4 or 5, has been carried out using thermal microscopy (TM) and differential scanning calorimetry (DSC). The results are discussed in the light of other experimental observations on N (p-n-alkoxy benzylidene)-p-n alkyl anilines (nO.m). It has been observed that the position of oxygen on either side of the rigid core of the benzylidene moiety plays an important role in the manifes

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13

Deli, József, Tamás Lóránd, Dezsö Szabó, András Földesi, and Adolf Zschunke. "Synthesis of 2-amino-8-benzylidene-4-phenyl-3,4,5,6,7,8-hexahydro- and -5,6,7,8-tetrahydroquinazoline derivatives." Collection of Czechoslovak Chemical Communications 50, no. 7 (1985): 1602–10. http://dx.doi.org/10.1135/cccc19851602.

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Base-catalyzed reaction of 2,6-dibenzylidenecyclohexanone and alkylguanidines gave 2-alkylamino-8-benzylidene-4-phenyl-3,4,5,6,7,8-hexahydroquinazolines IVa-c, which were oxidized to 2-alkylamino-8-benzylidene-4-phenyl-5,6,7,8-tetrahydroquinazolines Va-c. The acylamino (VIa-c, VIIa-d, IXa,b) and diacylamino derivatives (VIIIa,b) of the 2-amino-8-benzylidene-4-pheny]-3,4,5,6,7,8-hexahydroquinazoline (II), 2-amino-8-benzylidene-4-phenyl-5,6,7,8-tetrahydroquinazoline (III) and compounds Va-c have also been prepared. These compounds having the E-configuration were converted into the Z isomers XIIa

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14

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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15

Tehri, Piyush, and Rama Krishna Peddinti. "DBU-catalyzed [3 + 2] cycloaddition and Michael addition reactions of 3-benzylidene succinimides with 3-ylidene oxindoles and chalcones." Organic & Biomolecular Chemistry 17, no. 16 (2019): 3964–70. http://dx.doi.org/10.1039/c9ob00385a.

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DBU-promoted reactions of 3-benzylidene succinimides with 3-ylidene oxindoles furnished spirooxindole derivatives and those with chalcones provided Michael adducts benzylidene succinimide-tethered propanones.

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16

Khosa, Muhammad Kaleem, Muhammad Asghar Jamal, Rubbia Iqbal, and Mazhar Hamid. "Synthesis and Characterization of Novel Processable and Flexible Polyimides Containing 3,6-Di(4-carboxyphenyl)pyromellitic Dianhydride." Advances in Chemistry 2014 (September 10, 2014): 1–10. http://dx.doi.org/10.1155/2014/759594.

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A series of six novel polyimides containing 3,6-di(4-carboxyphenyl)pyromellitic dianhydride were synthesized via two steps condensation method. Aromatic diamines monomers, 4-(4-aminophenoxy)-N-(4-(4-aminophenoxy)benzylidene)-3-chloroaniline (DA1), 4-(4-amino-3-methylphenoxy)-N-(4-(4-amino-3-methylphenoxy)benzylidene)-3-chloroaniline (DA2), 4-(4-amino-2-methylphenoxy)-N-(4-(4-amino-2-methylphenoxy)benzylidene)-3-chloroaniline (DA3) 4-(4-aminophenoxy)-N-(4-(4-aminophenoxy)benzylidene)-2-methylaniline (DA4), 4-(4-amino-3-methylphenoxy)-N-(4-(4-amino-3-methylphenoxy)benzylidene)-2-methylaniline (D

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17

RATHINDRA, NATH RAY. "Preparation of 2,4-Benzylidene-L-xylose." Journal of Indian Chemical Society Vol. 64, Jun 1987 (1987): 371. https://doi.org/10.5281/zenodo.6235923.

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Research Chemist, Development Consultants Pvt. Ltd., 24B Park Street, Calcutta-700 016 <em>Manuscript received 17 March 1986, revised 20 June 1986, </em><em>accepted 10 June 1987</em> Preparation of 2,4-Benzylidene-L-xylose.

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18

da C. Sindra, Haryadylla, Carlos Vinícius P. dos Santos, and Marcio C. S. de Mattos. "Trihaloisocyanuric Acids: Useful Reagents for Conversion of Benzaldehydes into Benzylidene Dihalides under Appel Conditions." Letters in Organic Chemistry 17, no. 8 (2020): 590–95. http://dx.doi.org/10.2174/1570178617666200121110618.

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The reaction of substituted benzaldehydes with tribromoisocyanuric acid and triphenylphosphine led to the corresponding benzylidene dibromides (95-99%). Similar reaction using trichloroisocyanuric acid produced benzylidene dichlorides (38-96%).

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19

Suresh, Ramamurthy, Saravanan Palanivel Sakthinathan, Dakshnamoorthy Kamalakkannan, Inbasekaran Muthuvel, and Ganesamoorthy Thirunarayanan. "Synthesis and pharmacological evaluation of some benzylidene-4-nitroanilines." Ovidius University Annals of Chemistry 31, no. 1 (2020): 55–59. http://dx.doi.org/10.2478/auoc-2020-0011.

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AbstractA number of nine benzylidene-4-nitroanilines were synthesized by condensation method. The formation of the substituted (E)-N-benzylidene-4-nitrobenzenamines has been confirmed from their physical and Ultra-Violet, Infra-Red, NMR spectral data. The evaluation of antimicrobial screening of substituted (E)-N-benzylidene-4-nitrobenzenamines was conducted by using standard Bauer-Kirby method. Three gram-positive microbes namely Bacillus subtilis, Micrococcus luteus and Staphylococcus aureus, and two gram-negative microbes, Escherichia coli and Pseudomonas aeruginosa, were used for the antib

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20

Al-Mughaid, Hussein, T. Bruce Grindley, Katherine N. Robertson, and T. Stanley Cameron. "New potential dendritic cores: Selective chemistry of dipentaerythritol." Canadian Journal of Chemistry 81, no. 6 (2003): 505–16. http://dx.doi.org/10.1139/v03-006.

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Methods were developed to convert dipentaerythritol efficiently into di-O-benzylidene, di-O-cyclohexylidene, di-O-1-ethylpropylidene, and di-O-methylene diacetals. The known di-O-benzylidene acetal, considered to be a single isomer, was shown to be close to a statistical mixture of the cis,cis-, cis,trans-, and trans,trans-isomers. Structures were established by a combination of NMR spectroscopy and X-ray crystallography. Reaction of the di-O-benzylidene acetals with benzyl chloride and potassium hydroxide surprisingly gave good to excellent yields of the monobenzyl ethers. An explanation for

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21

Balamurugan, A., and Hyung-il Lee. "New benzylidene oxazolone derived polymeric photoswitches for light-induced tunable thermoresponsive behaviors." Polym. Chem. 5, no. 22 (2014): 6426–30. http://dx.doi.org/10.1039/c4py01054j.

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Thermoresponsive polymeric photoswitches containing benzylidene oxazolone moieties were successfully synthesized and characterized. The LCST of the polymeric photoswitches could be tuned by isomerization of the benzylidene oxazolone moieties, accomplished with photoirradiation.

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22

Khusnutdinova, Elmira F., Nguyen Thi Thu Ha, Gulnara V. Giniyatullina, Le Thi Tu Anh, Alexander I. Poptsov та Oxana B. Kazakova. "Synthesis and alpha ‐ inhibitory activity of lupane type С2‐benzylidene‐ triterpenoids". Vietnam Journal of Chemistry 59, № 5 (2021): 612–19. http://dx.doi.org/10.1002/vjch.202100013.

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AbstractA series of novel and previously synthesized lupane type С2‐benzylidene derivatives was evaluated on α‐glucosidase enzyme inhibition. Most of the tested compounds exhibited significantly better activity (1.8‐700 times higher) than the standard drug acarbose. The structure‐activity relationship indicated that the type of benzylidene moiety and C28‐substituent of lupane core plays an important influence on the activity. Methyl 2‐furfurylidene betulonate, m‐iodo‐benzylidene betulonic acid and 3‐pyridinylideno‐betulonic acid hydrazide have been founded as effective α‐glucosidase inhibitors

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23

Purvesh, J. Shah. "Preparation, Characterization and Biological Screening of Novel Imidazoles." Journal of Progressive Research in Chemistry 2, no. 1 (2015): 54–60. https://doi.org/10.5281/zenodo.3970044.

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The 4-benzylidene-2-(4-methoxyphenyl)oxazol-5(4H)-one (B) has been prepared from cyclo condensation reaction between hippuric acid (A) with p-anisaldehyde. A series of 4-benzylidene-1-(substitued-2- benzothiazolyl)-2-(4-methoxyphenyl)-1H-imidazol-5(4H)-one (D1-6) have been synthesized from 2-amino substituted benzothiazole (C1-6) by condensation reaction with 4-benzylidene-2-(4-methoxyphenyl) oxazol-5(4H)-one (B). The synthesized compounds were characterized by IR, 1H-NMR, 13C-NMR and Mass spectral data. All the compounds were screened for their antibacterial and antifungal activities.

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24

Guindon, Yvan, Yves Girard, Sylvie Berthiaume, Vida Gorys, René Lemieux, and Christiane Yoakim. "Dialkyl and diaryl boron halides: reductive opening of benzylidene acetals." Canadian Journal of Chemistry 68, no. 6 (1990): 897–902. http://dx.doi.org/10.1139/v90-141.

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Dimethylboron bromide or diphenylboron bromide can be used in combination with borane to achieve the regiocontrolled conversion of benzylidene acetals to their corresponding hydroxy benzyl ethers with moderate to high yields. Keywords: dimethylboron bromide, diphenylboron bromide, reductive opening, benzylidene, acetals.

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25

Raut, Santosh, Bharat Dhotre, Atul Tidke, and Mohammad Arif Pathan. "An Operationally Simple and Efficient Synthesis of 7-Benzylidene-substitutedphenyl- 3,3a,4,5,6,7-hexahydro-2H-indazole by Grinding Method." Current Organic Synthesis 17, no. 4 (2020): 313–21. http://dx.doi.org/10.2174/1570179417666200406142118.

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Background: An eco-friendly, operationally simple and efficient reaction is shown between various 2,6-bis-(substituted-benzylidene)-cyclohexanones and differently substituted hydrazine in the presence of acetic acid. Methods: The reaction between various 2,6-bis-(substituted-benzylidene)-cyclohexanones and differently substituted hydrazine in the presence of acetic acid afforded 7-Benzylidene-substituted-phenyl-3,3a,4,5,6,7- hexahydro-2H-indazole in 74 to 92 % yield in short reaction time using the grindstone technique. Results and Discussion: The notable advantages of this method include mild

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26

Martono, Sudibyo. "BENZYLIDENE CYCLOPENTANONE DERIVATIVES AS INHIBITORS OF RAT LIVER GLUTATHIONE S-TRANSFERASE ACTIVITIES." Indonesian Journal of Chemistry 5, no. 1 (2010): 71–75. http://dx.doi.org/10.22146/ijc.21842.

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The effect of the curcumin analogues, 2,6-bis-(4-hydroxy-3-methoxy benzylidene) cyclopentanone (B1) and two of its derivatives on m class glutathione S-transferases (GSTs) from phenobarbital-induced and uninduced rat liver cytosol has been studied to elucidate their anti-inflammatory activity. GST activity was monitored spectrophotometrically using 1,2-dichloro-4-nitrobenzene. B1 was the most potent inhibitor of GSTs, both in uninduced and in phenobarbital-induced rat liver cytosol. These inhibitory properties might be explained as part of the anti-inflammatory activity of benzylidene cyclopen

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27

Tanum, Gunnar, Kjell M. Tvcit, Herman Host, and Erik O. Pettersen. "Benzylidene-Glucose." American Journal of Clinical Oncology 13, no. 2 (1990): 161–63. http://dx.doi.org/10.1097/00000421-199004000-00014.

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28

van Alphen, J. "Note on benzylidene-para-toluidine and benzylidene aniline." Recueil des Travaux Chimiques des Pays-Bas 61, no. 12 (2010): 875. http://dx.doi.org/10.1002/recl.19420611206.

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29

Maturi Someswara Rao, Tadiboina Bhaskara Rao, Cherukumalli Purna Koteswara Rao, and Nagaraj Maddur. "Synthesis And Characterization Of Novel Pyrimidine-4,5-Diamine As Anticancer Agent." International Journal of Research in Pharmaceutical Sciences 11, no. 3 (2020): 4334–41. http://dx.doi.org/10.26452/ijrps.v11i3.2649.

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Unlike latent cells, cancer cells supply deoxyribonucleoside triphosphates to cells continuously and thereby, prop up the uncontrolled cancer growth. Pyrimidine has been concerned in the separation of leukemic cells, known as adenine bioisosteres, as well as its biological activities, especially its anticancer properties. In this context, a novel series of N5-(3-substituted benzylidene)-N4-phenyl pyrimidine-4,5-diamine [5A-5F] / N5-(2-substituted benzylidene)-N2,N2-dimethyl-N4-phenyl pyrimidine-2,4,5-triamine [5a-5f] were synthesized by using the starting ingredient formimidamide/4-(dimethylam

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30

Santra, Abhishek, Tamashree Ghosh, and Anup Kumar Misra. "Removal of benzylidene acetal and benzyl ether in carbohydrate derivatives using triethylsilane and Pd/C." Beilstein Journal of Organic Chemistry 9 (January 14, 2013): 74–78. http://dx.doi.org/10.3762/bjoc.9.9.

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Clean deprotection of carbohydrate derivatives containing benzylidene acetals and benzyl ethers was achieved under catalytic transfer hydrogenation conditions by using a combination of triethylsilane and 10% Pd/C in CH3OH at room temperature. A variety of carbohydrate diol derivatives were prepared from their benzylidene derivatives in excellent yield.

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31

Ravula, Sampath, Bijaya Ketan Sahoo, and Balakrishna Kolli. "Synthesis and Characterization of Azo, Bis-Benzylidene and Pyranone based Polymers for NLO Application." Research Journal of Chemistry and Environment 26, no. 4 (2022): 135–43. http://dx.doi.org/10.25303/2604rjce135143.

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Various Azo, Bis-benzylidene and Pyranone based polymers were synthesized. Structurally, the polymers differ from each other by their alkyl chain moieties attached to their monomeric units. Structural characterization was made by NMR and IR, thermal stability was measured by thermo gravimetric analyzer (TGA) and glass transition temperature (Tg) was measured by differential scanning calorimetry (DSC). From analysis of the characterization data, it was found that the Bis-benzylidene pyranone polymers are thermally stable up to 250 oC. These polymers were soluble in high polar solvents. Bis-benz

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32

Baron, Verna, and Keith T. Mead. "Synthesis of 3-benzylidene-dihydrofurochromen-2-ones: promising intermediates for biflavonoid synthesis." Heterocyclic Communications 21, no. 4 (2015): 225–31. http://dx.doi.org/10.1515/hc-2015-0053.

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AbstractA route to 3-benzylidene-dihydrofurochromen-2-ones from 2H-chromenes is described. Lactonization of 2H-chromenes was achieved using a two-step cyclopropanation-rearrangement sequence. Subsequent conversion of these intermediates to the corresponding α-benzylidene lactones was achieved by lithium enolate aldol reaction, followed by base-promoted elimination of the aldolate mesylates. The alkene geometry was found to be base-dependent. While the use of KOBut favored formation of the E isomer, the application of DBU showed a slight preference for the Z isomer. In further studies, these 3-

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33

Pashkuleva, Iva, Veneta Dryanska, Silvia Angelova, and Svetlana Simova. "Phase-transfer Catalysed Reactions of Mono- and disubstituted N-(benzylidene)-benzylamines with cinnamic acid derivatives." Journal of Chemical Research 2000, no. 3 (2000): 103–5. http://dx.doi.org/10.3184/030823400103166779.

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Tert-butyl esters 3 and 3-cyanopyrrolidines 6 are prepared by phase-transfer-catalysed reactions of symmetrical 4,4′-disubstituted N-(benzylidene)benzylamines with tert-butyl cinnamate and α-phenylcinnamonitrile, respectively; similar reactions of mono-substitited N-(benzylidene)benzylamines afforded mixtures of compounds 3, respectively 6, and their regioisomers 3(A) and 6(A).

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34

Makwane, Sunil, SD Srivastava, Rajiv Dua, and SK Srivastava. "Synthesis and Antimicrobial Activity of 4-Oxo-Thiazolidines and 5-Arylidene Derivatives of 2-Amino-5-Ethyl-1,3,4-Thiadiazole." Journal of Bangladesh Academy of Sciences 42, no. 2 (2018): 155–70. http://dx.doi.org/10.3329/jbas.v42i2.40042.

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A new series of 5-benzylidene-3-(5-ethyl-[1,3,4]thiadiazol-2-yl)-2-phenyl-thiazolidin-4-ones (3a-3m) were synthesized. The reaction of thioglycolic acid with benzylidene-(5-ethyl-[1,3,4] thiadiazol-2-yl)-amine 1a in the presence of anhydrous ZnCl2 afforded the new heterocyclic compounds 5-benzylidene-3-(5-ethyl-[1,3,4] thiadiazole-yl)-2-phenyl-thiazolidin-4-one, 2a. The latter product on treatment with several selected substituted aromatic aldehydes in the presence of sodium ethoxide underwent the Knoevenagel reaction to yield 5-benzylidene-3-(5-ethyl-[1,3,4] thiadiazol-2-yl)-2-phenyl-thiazoli

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35

Laddi, U. V., and S. R. Desai. "SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF SOME NEW 1,3,4- OXADIAZOLES, 1,2,4-TRIAZOLES AND 1,3,4-THIADIAZOLES." INDIAN DRUGS 53, no. 06 (2016): 18–23. http://dx.doi.org/10.53879/id.53.06.10489.

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Some new 5-[(((α-phenyl/methyl)benzylidene)amino)oxy]methyl/ethyl-2-[4-(substituted aryl)/allyl)] amino-1,3,4-oxadiazoles (4a-p), 3-[(((α-phenyl/methyl)- benzylidene) amino)oxy]methyl/ethyl-4-(4- substitutedaryl)/allyl-5-mercapto-1,2,4-triazoles (5a-p) and 5-[(((α-phenyl/methyl)-benzylidene)amino) oxy]- methyl/ethyl-2-[4-(substituted aryl)/allyl)]amino-1,3,4-thiadiazoles (6a-p) were prepared starting from α/β-[((α-(phenyl/methyl)benzylidene)amino)oxy acetic/propionic acid hydrazides (1a-d). The structures of all the compounds have been established by elemental and spectral (IR, 1HNMR and mass)

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36

Prasad, P. V. Datta, G. Padmaja Rani, and V. G. K. M. Pisipati. "Phase Transition, Birefringence and Orientational Order Parameter Studies in Four Members of Benzylidene Aniline Liquid Crystals." Solid State Phenomena 181-182 (November 2011): 115–19. http://dx.doi.org/10.4028/www.scientific.net/ssp.181-182.115.

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The nature of the phase transitions across isotropic–nematic (IN) and nematic–smectic-A (N-SmA) are carried out using density measurements in N-(p-n-ethoxy benzylidene)-p-n-pentyl aniline, 2O.5, N-(p-n-methoxy benzylidene)-p-n-pentyloxy aniline, 1O.O5, N-(p-n-ethyl benzylidene)-p-n-dodecyl aniline, 2.12 and N-(p-n-butyl benzylidene)-p-n-dodecyl aniline, 4.12. The compounds exhibit IN, IN, IN and INSmA phase sequences respectively with varying thermal ranges suitable for the study of birefringence. The birefringence studies are carried out using Newton’s rings and wedge techniques which provide

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37

Otero, Iran, Holger Feist, Lidcay Herrera, Manfred Michalik, José Quincoces, and Klaus Peseke. "Nucleoside Analogues from Branched-Chain Pyranosides." Australian Journal of Chemistry 58, no. 2 (2005): 104. http://dx.doi.org/10.1071/ch04168.

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Reaction of (pyranosid-3-yl)ethanal 2 with ethynylmagnesium bromide or lithium phenylacetylide in THF afforded (2R,S)-1-(methyl 2-O-benzyl-4,6-O-benzylidene-3-deoxy-α-d-altropyranosid-3-yl)but-3-yn-2-ols 3a and 3b, respectively. Oxidation of 3a and 3b yielded the 1-(methyl 2-O-benzyl-4,6-O-benzylidene-3-deoxy-α-d-altropyranosid-3-yl)but-3-yn-2-ones 4a and 4b, which upon treatment with hydrazine and hydrazine derivatives formed the 3-(methyl 2-O-benzyl-4,6-O-benzylidene-3-deoxy-α-d-altropyranosid-3-ylmethyl)pyrazoles 5a–5d. Compounds 4a and 4b also underwent reaction with amidinium and guanidin

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38

Sharma, Anjali, and Rajib Panchadhayee. "P2O5-Al2O3 Catalyzed One Pot Acetylation, Benzylidene Acetal Protection and Benzylidene Removal of Sugar Derivatives." Asian Journal of Chemistry 35, no. 6 (2023): 1408–16. http://dx.doi.org/10.14233/ajchem.2023.27842.

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An environment-friendly, simple and efficient one-pot acetylation and benzylidene acetal formation procedure has been introduced for the synthesis of sugar derivatives using P2O5-Al2O3 as a solid acid catalyst under solvent-free condition at room temperature, with excellent overall yield. This benzylidene acetal has been deprotected using the same reagent but in a moist condition.

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39

Bowden, Keith, Alexander Perjéssy, Ján Benko, et al. "Reactions of Carbonyl Compounds in Basic Solutions. Part 351: The Alkaline Hydrolysis and Reactivity – Structure – Spectra Correlations of (Z)-4-(Substituted Benzylidene)-2-Phenyl-4H-Oxazol-5-Ones." Journal of Chemical Research 2002, no. 7 (2002): 309–10. http://dx.doi.org/10.3184/030823402103172266.

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The kinetics of the alkaline hydrolysis and the configuration, conformation and electronic structure were studied using IR, NMR spectroscopy, X-ray analysis and AM1 theoretical calculations for a series of (Z)-4-(substituted benzylidene)-2-phenyl-4H-oxazol-5-ones (1) and compared with analogous results reported for (E)-4-benzylidene-2-phenyl-4H-furan-5-ones (5) and related compounds.

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40

Mukerjee, Arya K., Laxmi Rao, Seyed Saied Homami, and Kiran Joseph. "Reaction of unsaturated azlactones with sulfur nucleophiles: some observations." Canadian Journal of Chemistry 72, no. 5 (1994): 1383–87. http://dx.doi.org/10.1139/v94-173.

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Unsaturated azlactones undergo thiolysis with toluene-α-thiol, but 2-substituted (Z)-4-o-acetoxybenzylidene-4,5-dihydrooxazol-5-ones form 3-acylaminocoumarins in the presence of triethylamine. Sodium sulfide in ethanol brings about ethanolysis of the 1,5 bond and deacetylation of an acetoxy group. (Z)-4-Benzylidene-4,5-dihydrooxazol-5-one reacts with potassium thiocyanate to give (E)-4(5)-benzylidene-2-thiohydantoin.

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41

Thien, Do Truong, Nguyen Van Tuyen, and Tran Thi Y. Nhi. "STUDIES ON CHITOSAN - BENZALDEHYDE INTERACTION IN A HOMOGENEOUS SYSTEM AND ITS ADSORPTION BEHAVIOR OF METAL IONS IN AQUEOUS SOLUTION." ASEAN Journal on Science and Technology for Development 25, no. 1 (2017): 149–54. http://dx.doi.org/10.29037/ajstd.238.

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In this work, N-benzylidene chitosan was synthesized by chitosan –benzaldehyde interaction in a homogeneous system. The modified polymers were characterized by means of infrared (IR) spectra, X-Ray diffraction and thermal analysis. Their adsorption behavior was investigated by atomic absorption spectrophotometry. The experimental results showed that N-benzylidene chitosan had better adsorption properties and higher chemical resistance than that of chitosan.

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42

Srinivasulu, M., D. M. Potukuchi, and V. G. K. M. Pisipati. "Dilatometric Studies Across the Isotropic to Smectic-F Transition." Zeitschrift für Naturforschung A 52, no. 10 (1997): 713–16. http://dx.doi.org/10.1515/zna-1997-1005.

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Abstract Thermal Microscopy (TM), Differential Scanning Calorimetry (DSC) and dilatometric studies were carried out to characterise the liquid crystalline phases and mesomorphic transitions exhibited by three higher homologues of N-(p-n-dodecyloxy benzylidene)p-n-alkyl anilines, viz., N-(p-n-dodecyloxy benzylidene)p-n-dodecyl aniline, (12O.12), N-(p-n-dodecyloxy benzylidene)p-n-tetradecyl aniline, (12O.14) and (N-(p-n-dodecyloxy benzylidene)p-n-hexadecyl aniline, (12O.16). The three com-pounds exhibit enantiotropic smectic-F and smectic-G liquid crystalline phases between the isotropic liquid

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43

Tyutina, Marina A., Tatyana V. Kudayarova, and Elena A. Danilova. "PRODUCTS OF INTERACTION BETWEEN 2,5-DIAMINO- 1,3,4-THIADIAZOLE AND p-AMINOBENZALDEHYDE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 59, no. 5 (2018): 16. http://dx.doi.org/10.6060/tcct.20165905.5351.

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5-Amino-2N-benzylidene-4'-amino-1,3,4-thiadiazole and 2,5 bis (N-benzylidene-4'-amino) - 1,3,4-thiadiazole was synthesized by interaction between 2,5-diamino-1,3,4-thiadiazole and p –ami-nobenzaldehyde in ethanol environment. The structure was established on data of mass spectrometry, the elemental analysis, UV-Vis, IR, 1H NMR spectroscopy. An electronic and geometrical structure of the synthesized compounds was studied by methods of quantum chemistry.

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44

Choi, Ho Kyoung, Jae Hyun Choi, Hyeoung Seok Lee, and Jae Sik Na. "Liquid Crystalline Epoxy Resin Cured with Azomethine Hardening Compounds." Applied Mechanics and Materials 749 (April 2015): 22–24. http://dx.doi.org/10.4028/www.scientific.net/amm.749.22.

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Bisphenol of 4,4’-dihydroxy-N-benzylidene-4-aminophenol containing azomethine group was synthesized via condensation of an aromatic amine namely 4-aminophenol with p-hydroxybenz aldehyde. It’s epoxy derivate and epicholorohydrin produced the new liquid crystalline diglycidyl ether of 4,4’-dihydroxy-N-benzylidene-4-aminophenol. A new type of liquid crystalline epoxy and azoemthine hardening agent are characterized at 300°C for 10 min, using c11z as a catalyst. The chemical structures were confirmed by FT-IR,1H-NMR. The curing reaction with 4,4’-dihydroxy-N-benzylidene-4-aminophenol were carried

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45

Çelik, Fatih. "Synthesis, characterization and antioxidant activity of sulfonyl-1H-1,2,3-triazoles." Turkish Journal of Analytical Chemistry 7, no. 2 (2025): 176–81. https://doi.org/10.51435/turkjac.1665889.

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3-methoxy-4-((1-tosyl-1H-1,2,3-triazol-4-yl)methoxy)benzaldehyde (3), 4-((1-(ethylsulfonyl)-1H-1,2,3-triazol-4-yl) methoxy) benzaldehyde (6), 4-((1-((4-chloro phenyl) sulfonyl)-1H-1,2,3-triazol-4-yl) methoxy) benzaldehyde (9), 4-((4-((1-(ethylsulfonyl)-1H-1,2,3-triazol-4-yl) methoxy) benzylidene) amino)phenol (7), 4-((4-((1-((4-chlorophenyl) sulfonyl)-1H-1,2,3-triazol-4-yl) methoxy) benzylidene) amino) phenol (10), 4-((4-((1-tosyl-1H-1,2,3-triazol-4-yl) methoxy) benzylidene)amino) phenol (12) were synthesized. The compounds were characterized by FTIR, 1H-NMR and 13C-NMR spectroscopic methods.

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46

Ajeetha, Narayana, and Durga P. Ojha. "Role of Oxygen on Phase Behaviour of Benzylidene Aniline – A Comparative Study." Zeitschrift für Naturforschung A 64, no. 12 (2009): 844–48. http://dx.doi.org/10.1515/zna-2009-1211.

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Four structurally related Schiff’s base compounds are synthesized and their mesogenic properties are characterized by using Thermal Microscopy (TM) and Differential Scanning Calorimetry (DSC). The position of oxygen is varied from either sides of the bridging site, oxygen introduced on both sides and the oxygen is removed from the bridging site for the values of n = 8 and m = 5. The influence of oxygen atom to the extent of increase in thermal range, depression in melting temperature, elevation of clearing temperature is observed for all four compounds, viz. N (p-n-Octyloxy benzylidene) p-n-Pe

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47

Mekheimer, Ramadan A., Khadijah Al-Zaydi, Mahmoud A. A. Ibrahim, Asma Al-Shamary, and Kamal Sadek. "Regio- and stereoselective 1,3-dipolar cycloaddition reactions of C-aryl (or hetaryl)-N-phenylnitrones to monosubstituted ylidene malononitriles and 4-benzylidene-2-phenyloxazol-5(4H)-one." Zeitschrift für Naturforschung B 72, no. 5 (2017): 317–26. http://dx.doi.org/10.1515/znb-2016-0263.

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AbstractThe first example of 1,3-dipolar cycloaddition reactions of C-aryl (or hetaryl)-N-phenylnitrones to monosubstituted ylidene malononitriles and 4-benzylidene-2-phenyl-oxazol-5(4H)-one is described. The reaction of C-(4-(dimethylamino)phenyl)-N-phenyl-nitrone (1a) with 2-(4-substituted-benzylidene)malononitriles 2a, b in dry toluene, in the absence of catalyst, at reflux temperature furnished the novel cycloadducts 2-(3-aryl-2-phenyl-2,3-dihydro-1,2,4-oxadiazol-5-yl)-3-(4-methoxyphenyl)acrylonitriles 3a, b. Refluxing C-aryl (or hetaryl)-N-phenylnitrones 1b–i with 2-(4-methoxy-benzylidene

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48

Putra, Galih Satrio, Melanny Ika Sulistyowaty, Tegar Achsendo Yuniarta, et al. "QSAR study of benzylidene hydrazine benzamides derivatives with in vitro anticancer activity against human lung cancer cell line A459." Journal of Pharmacy & Pharmacognosy Research 11, no. 6 (2023): 1123–36. http://dx.doi.org/10.56499/jppres23.1718_11.6.1123.

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Context: In the last decade, resistance to epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) in lung cancer cases has been widespread. The discovery and development of new drugs need to be done to overcome the case. Aims: To develop lung anticancer candidates with benzylidene hydrazine benzamides derivatives that can inhibit the growth of human lung cancer cell line A459. Methods: The in silico approach method, along with the QSAR technique, plays an important role in the process of discovery and development of new drugs. In this study, we focused on developing benzyliden

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49

Winyakul, Chanakan, Weerachai Phutdhawong, Poomipat Tamdee, Jitnapa Sirirak, Thongchai Taechowisan, and Waya S. Phutdhawong. "2,5-Diketopiperazine Derivatives as Potential Anti-Influenza (H5N2) Agents: Synthesis, Biological Evaluation, and Molecular Docking Study." Molecules 27, no. 13 (2022): 4200. http://dx.doi.org/10.3390/molecules27134200.

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2,5-Diketopiperazine derivatives, consisting of benzylidene and alkylidene substituents at 3 and 6 positions, have been considered as a core structure for their antiviral activities. Herein, the novel N-substituted 2,5-Diketopiperazine derivatives were successfully prepared and their antiviral activities against influenza virus were evaluated by monitoring viral propagation in embryonated chicken eggs. It was found that (3Z,6Z)-3-benzylidene-6-(2-methyl propylidene)-4-substituted-2,5-Diketopiperazines (13b–d), (3Z,6E)-3-benzylidene-6-(2-methylpropyli dene)-1-(1-ethyl pyrrolidine)-2,5-Diketopip

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50

Urosevic, Jovica, Sasa Drmanic, Jasmina Nikolic, Ivan Juranic, and Bratislav Jovanovic. "Structure-reactivity correlation for the kinetics of the reaction of substituted 4-phenyl-1,4-dihydropyridines formation." Journal of the Serbian Chemical Society 78, no. 12 (2013): 1963–73. http://dx.doi.org/10.2298/jsc131120139u.

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Quantitative structure-reactivity correlations for the kinetics of the Hantzsch's synthesis of substituted 4-phenyl-1,4-dihydropyridines in the reaction between ethyl m- and p-substituted benzylidene acetoacetate and enamine has been studied. The reaction kinetics was followed using spectrophotometric measurements. It was found that the reaction correspond to the second-order kinetics. Quantitative structure-reactivity correlations of log k with the corresponding substituent constants (s,s+,sI and sR+) using Hammett and extended Hammett equation (DSP equation). They show linear relationship wi

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