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Journal articles on the topic 'Pyridine(2-benzyl)'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Al Rasbi, Nawal K., and Michael D. Ward. "Synthesis and crystal structure of an M 4 L 6 tetrahedral cage with outward-facing pockets from a substituted pyrazolyl–pyridine ligand." Acta Crystallographica Section C Structural Chemistry 74, no. 8 (2018): 961–66. http://dx.doi.org/10.1107/s2053229618009683.

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The self-assembly of metal–polydentate ligands to give supramolecular tetrahedral complexes is of considerable current interest. A new ligand, 4-benzyl-2-[1-(2-{[3-(4-benzylpyridin-2-yl)-1H-pyrazol-1-yl]methyl}benzyl)-1H-pyrazol-3-yl]pyridine (L), with chelating pyrazolyl–pyridine units substituted on the 4-position of the pyridyl ring with benzyl units, has been synthesized and fully characterized. The self-assembly of L with cobalt(II) gave rise to a tetrahedral cage (hexakis{μ-4-benzyl-2-[1-(2-{[3-(4-benzylpyridin-2-yl)-1H-pyrazol-1-yl]methyl}benzyl)-1H-pyrazol-3-yl]pyridine}perchloratotetr

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2

Maekawa, Yuuki, Zachary T. Ariki, Masakazu Nambo, and Cathleen M. Crudden. "Pyridine-catalyzed desulfonative borylation of benzyl sulfones." Organic & Biomolecular Chemistry 17, no. 31 (2019): 7300–7303. http://dx.doi.org/10.1039/c9ob01099h.

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3

Galadzhun, Iurii, Rafal Kulmaczewski, and and Malcolm A. Halcrow. "Five 2,6-Di(pyrazol-1-yl)pyridine-4-carboxylate Esters, and the Spin States of their Iron(II) Complexes." Magnetochemistry 5, no. 1 (2019): 9. http://dx.doi.org/10.3390/magnetochemistry5010009.

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Two phenyl ester and three benzyl ester derivatives have been synthesized from 2,6-di(pyrazol-1-yl)pyridine-4-carboxylic acid and the appropriate phenyl or benzyl alcohol using N,N’-dicyclohexylcarbodiimide as the coupling reagent. Complexation of the ligands with Fe[BF4]2·6H2O in acetone yielded the corresponding [FeL2][BF4]2 complex salts. Four of the new ligands and four of the complexes have been crystallographically characterised. Particularly noteworthy are two polymorphs of [Fe(L3)2][BF4]2·2MeNO2 (L3 = 3,4-dimethoxyphenyl 2,6-di{pyrazol-1-yl}pyridine-4-carboxylate), one of which is crys

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4

Journal, Baghdad Science. "Synthesis , characterization and biological activity study of N-substituted sulfonamido maleimides substituted with different heterocycles." Baghdad Science Journal 7, no. 1 (2010): 641–53. http://dx.doi.org/10.21123/bsj.7.1.641-653.

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Eighteen new cyclic imides (maleimides) conncted to benzothiazole moiety through sulfonamide group were synthesized via multistep synthesis.The first step involved preparation of two maleamic acids N-phenylmaleamic acid and N-benzylmaleamic acid via reaction of maleic anhydride with aniline or benzyl amine.Dehydration of the prepared amic acids by treatment with acetic anhydride and anhydrous sodium acetate in the second step afforded N-phenylmaleimide and N- benzyl maleimide which in turn were treated with chlorosulfonic acid in the third step to afford 4-(N-maleimidyl) phenyl sulfonyl chlori

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5

Sinaga, Cinthia Uly Hotnami, and Asep Wahyu Nugraha. "Determining the Most Stable Structure of Benzamided Derivatives Using Density Functional Theory (DFT)." Indonesian Journal of Chemical Science and Technology (IJCST) 4, no. 2 (2021): 49. http://dx.doi.org/10.24114/ijcst.v4i2.27594.

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This study aims to determine the energy change ∆E and determine the most stable compound based on computation results using the Density Functional Theory (DFT) method. In determining the energy change ∆E and determining the most stable compound, computational chemical calculations were used using NWChem version 6.6 software with the DFT method with the B3LYP / 3-21G base set hybrid function, the results of the calculations were visualized using the Jmol software. The results of computational calculations on the compound Benzamide is 57467.3632844735 kJ / mol, (4 - chlorocarbonyl - benzial) - p

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6

Li, Qing-Shan, Yong-Jian Zhao, Feng-Bo Xu, Hai-Bin Song, and Zheng-Zhi Zhang. "{2-[N-Benzyl-N-(diphenylphosphinomethyl)amino]pyridine}tricarbonylchlororhenium(I)." Acta Crystallographica Section E Structure Reports Online 62, no. 9 (2006): m2366—m2367. http://dx.doi.org/10.1107/s160053680603323x.

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7

Kowollik, Wolfgang, and Wolfgang Voelter. "Notizen: Synthese und NMR-spektroskopische Eigenschaften von Benzyl-2,3-anhydro-4-desoxy-4-[N]-pyridinium-pyranosiden/Synthesis and NMR Spectroscopic Properties of Several Benzyl 2,3-Anhydro-4-deoxy-4-[N]-pyridinium Pyranosides." Zeitschrift für Naturforschung B 47, no. 4 (1992): 589–90. http://dx.doi.org/10.1515/znb-1992-0421.

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Benzyl 2,3-anhydro-4-0-triflyl-β-L-ribopyranoside (1) and benzyl 2,3-anhydro-4-O-triflyl-α-D-lyxopyranoside (3) react with pyridine to give benzyl 2,3-anhydro-4-deoxy-4-[N]-pyridinium - α-D-lyxopyranoside triflate (2) and benzyl 2,3-anhydro-4-deoxy-4-[N]-pyridinium -β-L-ribopyranoside triflate (4). Similar reactions with thiourea and dimethylsulfoxide are mentioned. Compound 2 is stable at room temperature, whereas compound 4 decomposes in a few hours (neighbouring group effect). The 13C NMR assignments of 2 are proved by 13C {1H} single frequency decoupling experiments.

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8

Hashmi, Imran Ali, Holger Feist, Manfred Michalik, Helmut Reinke та Klaus Peseke. "Dimethylaminomethylene-α-D-xylo-hept-5-ulofuranurononitrile as Building Block in the Synthesis of ‘Reversed’ C-Nucleoside Analogues". Zeitschrift für Naturforschung B 61, № 3 (2006): 292–300. http://dx.doi.org/10.1515/znb-2006-0309.

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Abstract 3-O-Benzyl-6-deoxy-1,2-O-isopropylidene-6-(dimethylaminomethylene)-α-D-xylo-hept-5-ulofuranurononitrile (1) was reacted with amidinium salts, S-methylisothiouronium sulfate, and guanidinium chloride, respectively, in the presence of bases to furnish the 4-(3-O-benzyl-1,2-O-isopropylidene- α-D-xylo-tetrofuranos-4-yl)pyrimidine-5-carbonitriles 2 and the 4-(1,2-O-isopropylidene- α-D-glycero-tetr-3-enofuranos-4-yl)pyrimidine-5-carbonitriles 3, respectively. Treatment of 1 with ethyl 5-aminopyrazole-4-carboxylates yielded the ethyl 7-(3-O-benzyl-1,2-O-isopropylidene- α-D-xylo-tetrofuranos-

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9

Barlin, GB, LP Davies, SJ Ireland, and JK Zhang. "Imidazo[1,2-b]pyridazines. XI. Syntheses and Central Nervous System Activities of Some 6-(N-Benzyl-N-methylamino)-3-methoxy-2-phenyl(and substituted phenyl)imidazo[1,2-b]pyridazines." Australian Journal of Chemistry 45, no. 4 (1992): 751. http://dx.doi.org/10.1071/ch9920751.

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Syntheses are reported for 196-(N-benzyl-N-methylamino )-3-methoxy-2-phenyl(and substituted phenyl or pyridinyl ) imidazo [1,2-b] pyridazines from 6-(N-benzyl-N-methylamino)pyridazin-3- amine 2-oxide. The ability of each of these compounds to displace [3H]diazepam from rat brain membrane preparations was measured and the IC50 values (or percentage displacements) are reported and discussed. 6-(N-Benzyl-N-methylamino )-3-methoxy-2-phenylimido[1,2-b]pyridine was about half as active as its 6-bemylamino analogue, and the most active compound was 6-(N-benzyl-N-methylamino )-2-(2'-fluorophenyl)-3-me

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10

Casalegno, R., A. Corval, K. Kuldová, O. Ziane, and H. P. Trommsdorff. "Photo-induced proton transfer in crystalline 2-(2′,4′-dinitro-benzyl)pyridine." Journal of Luminescence 72-74 (June 1997): 78–80. http://dx.doi.org/10.1016/s0022-2313(96)00190-1.

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11

Ouzidan, Younès, Youssef Kandri Rodi, Hafid Zouihri, El Mokhtar Essassi, and Seik Weng Ng. "3-Benzyl-6-bromo-2-(2-furyl)-3H-imidazo[4,5-b]pyridine." Acta Crystallographica Section E Structure Reports Online 66, no. 7 (2010): o1874. http://dx.doi.org/10.1107/s160053681002475x.

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12

Kowalski, Piotr. "Action of benzyl chloride on 2-(N,N-dimethylamino)pyridine and 2-benzoylaminopyridine." Journal of Heterocyclic Chemistry 31, no. 1 (1994): 245–47. http://dx.doi.org/10.1002/jhet.5570310141.

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13

Ouzidan, Y., S. Obbade, F. Capet, El Mokhtar Essassi, and Seik Weng Ng. "4-Benzyl-6-bromo-2-phenyl-4H-imidazo[4,5-b]pyridine." Acta Crystallographica Section E Structure Reports Online 66, no. 4 (2010): o946. http://dx.doi.org/10.1107/s160053681001038x.

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14

Otero, Iran, Holger Feist, Dirk Michalik, Manfred Michalik, José Quincoces та Klaus Peseke. "Synthesis of Iso-C-nucleoside Analogues from 1-(Methyl 2-O-benzyl-4,6- O-benzylidene-3-deoxy-α-D-altropyranosid-3-yl)but-3-yn-2-ones". Zeitschrift für Naturforschung B 60, № 11 (2005): 1175–85. http://dx.doi.org/10.1515/znb-2005-1110.

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1-(Methyl 2-O-benzyl-4,6-O-benzylidene-3-deoxy-α-D-altropyranosid-3-yl)but-3-yn-2-one (3a) reacted with 3-amino-1H-1,2,4-triazole and 5-aminopyrazole-4-carboxylic acid derivatives in the presence of base to furnish the triazolo[1,5-a]pyrimidine (5) and the pyrazolo[1,5- a]pyrimidines (8a - d), respectively. Treatment of 1-(methyl 2-O-benzyl-4,6-O-benzylidene-3- deoxy-α-D-altropyranosid-3-yl)-4-phenyl-but-3-yn-2-one (3b) with cyanacetamide, 2-cyano-N- (4-methoxyphenyl)acetamide und N-aryl-3-oxo-butyramides afforded the substituted nicotinonitriles (11a - d). Furthermore, reaction of 3b with 2-b

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15

Liu, Wei, Xin Yu, Yahui Li, and Chunxiang Kuang. "Palladium-catalyzed oxidative CH/CH cross-coupling of pyridine N-oxides with five-membered heterocycles." Chem. Commun. 50, no. 66 (2014): 9291–94. http://dx.doi.org/10.1039/c4cc04129a.

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Using Ag<sub>2</sub>CO<sub>3</sub> as an additive, we developed the Pd-catalyzed intermolecular C–H/C–H cross-coupling of pyridine N-oxides with five-membered heterocycles such as 1-benzyl-1,2,3-triazoles, thiophens and furans.

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16

Drabina, Pavel, Sergej Karel, Illia Panov, and Miloš Sedlák. "Enantiocatalytic activity of substituted 5-benzyl-2-(pyridine-2-yl)imidazolidine-4-one ligands." Tetrahedron: Asymmetry 24, no. 5-6 (2013): 334–39. http://dx.doi.org/10.1016/j.tetasy.2013.02.007.

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17

Chen, Li Juan, Tao Feng, Peng Fei Wang, and Qing Quan Liu. "Hybrid Catalysts Compose of Mono-Substituted Keggin-Polyoxometalate and Different Aminopyridine Derivatives as Catalysts for Oxidation of Benzyl Alcohol with Hydrogen Peroxide." Advanced Materials Research 550-553 (July 2012): 132–36. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.132.

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amino- pyridinium salts of mono-substiuted Keggin-polyoxometalate were synthesized and the catalytic performance the oxidation of benzyl alcohol to benzaldehyde under solvent-free conditions with hydrogen peroxide was examined. The influences of the composition of hybrid catalyst and mole ratio of H2O2to benzyl alcohol were discussed, under the testing conditions of 70 oC, catalyst load 0.3 g, benzyl alcohol 2 mL, 30% H2O26mL, 5 h, 2-N-(2-pyrindinemethyl) -aminopyridinium salt of FeII substituted phosphotungstate (5b)4HPW11FeO39exhibited the best activity, the conversion of benzyl of 95.4% wit

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18

Meng, Shuang-Ming, Ke-Wei Wang, Hai Xie, Yue-Qin Fan, and Yong Guo. "Ethyl 2-amino-6-benzyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate." Acta Crystallographica Section E Structure Reports Online 67, no. 1 (2010): o226. http://dx.doi.org/10.1107/s1600536810051986.

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19

Möller, Konstanze, Kathrin Junge, Anke Spannenberg, and Matthias Beller. "2,6-Bis[(S)-4-benzyl-4,5-dihydro-1,3-oxazol-2-yl]pyridine." Acta Crystallographica Section E Structure Reports Online 67, no. 5 (2011): o1181. http://dx.doi.org/10.1107/s1600536811014061.

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20

Fun, Hoong-Kun, Suchada Chantrapromma, Zhong-Lin Lu, Alexei A. Neverov та R. Stan Brown. "Chloro[2-(dimethylamino)benzyl-κ2C1,N][4-(dimethylamino)pyridine-κN1]palladium(II)". Acta Crystallographica Section E Structure Reports Online 62, № 12 (2006): m3225—m3227. http://dx.doi.org/10.1107/s1600536806045119.

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21

Schaffarczyk McHale, Karin S., Michaela J. Wong, Alicia K. Evans, Alyssa Gilbert, Ronald S. Haines, and Jason B. Harper. "Understanding the effects of solvate ionic liquids as solvents on substitution processes." Organic & Biomolecular Chemistry 17, no. 41 (2019): 9243–50. http://dx.doi.org/10.1039/c9ob01753d.

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The solvent effects of solvate ionic liquids have been compared to the effects of previously studied ‘typical’ ionic liquids for the S<sub>N</sub>2 reaction between pyridine and benzyl bromide and the S<sub>N</sub>Ar reaction between ethanol and 1-fluoro-2,4-dinitrobenzene.

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22

KOWALSKI, P. "ChemInform Abstract: Action of Benzyl Chloride on 2-(N,N-Dimethylamino)pyridine and 2- Benzoylaminopyridine." ChemInform 26, no. 11 (2010): no. http://dx.doi.org/10.1002/chin.199511159.

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23

Dick, Stefan, and Armin Weiss. "Neue dreizähnige Liganden vom Typ N-AlkyI-N,N-bis(2-pyridylmethyl)amin/ New Tridentate Ligands of the Type N-Alkyl-N,N-bis(2-pyridylmethyl)amine." Zeitschrift für Naturforschung B 52, no. 2 (1997): 188–92. http://dx.doi.org/10.1515/znb-1997-0207.

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Abstract New tridentate ligands of the type N-alkyl-N,N-bis(2-pyridylmethyl)amine (alkyl = me thyl, benzyl, adamantyl) have been synthesized by reaction of alkylamines with 2 -(chlor-methyl)pyridine in alkaline solution. These amines are preferably isolated and stored as per chlorates. The perchlorate of the methyl substituted ligand has been crystallized in two modifications that differ in the twisting of the aromatic rings and in the coordination of the perchlorate anions.

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24

Sonawane, R. S., Mrunal Shirsat, S. R. Patil, J. C. Hundiwale, and A. V. P. atil. "Design and Synthesis of Novel Imidazopyridine Analogues and Evaluation as H+/K+-ATPase Antagonist." Asian Journal of Chemistry 32, no. 11 (2020): 2685–92. http://dx.doi.org/10.14233/ajchem.2020.22697.

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CID data base were explored considering AZD0865 as standard and docked in proton pump ATPase pocket (PDB ID: 4ux2) to find out novel imidazopyridine derivatives as proton pump inhibitors. A number of compounds showed good proton pump ATPase inhibitory activity as per the molecular docking study as compared to standard compound AZD0865. The compound AZD0865showed a docking score of -7.11 and revealed the interactions with amino acids Asn 138 and Asp 137. A series of novel imidazopyridine derivatives as proton pump inhibitors were docked, synthesized and characterized by IR, NMR, CHN and MS spec

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25

Wolfe, Saul, Yih-Huang Hsieh, Raymond J. Batchelor, Frederick WB Einstein, and Ian D. Gay. "A topochemical rearrangement with multiple inversions of configuration." Canadian Journal of Chemistry 79, no. 8 (2001): 1272–77. http://dx.doi.org/10.1139/v01-099.

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Crystalline 2-benzyloxypyridine-1-oxide rearranges slowly at room temperature to crystalline 1-benzyloxy-2-pyridone. No intermediates are detected when the process is followed by solid-state 13C NMR. The crystal structure of the pyridine-1-oxide strongly suggests that a topochemically controlled intramolecular process, in which the benzyl group migrates with retention of configuration, is not feasible. On the other hand, although somewhat disfavoured by initial solid-state O···C···O angles significantly less than the ideal 180°, intermolecular topochemically controlled processes can be envisag

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26

Bourke, David G., David J. Collins, Jonathan D. Bannister та ін. "Conversion of 12α-Hydroxyandrosta-1,4-diene-3,17-dione into a Derivative of 12-Oxoestradiol: a Novel C9 - C 10 Cleavage Reaction". Australian Journal of Chemistry 51, № 5 (1998): 353. http://dx.doi.org/10.1071/c97147.

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Reaction of 12α-hydroxyandrosta-1,4-diene-3,17-dione (1) with 2,2-dimethylpropane-1,3-diol in the presence of pyridinium p-toluenesulfonate gave the corresponding 17,17-cyclic acetal (2). Oxidation of (2) with chromium trioxide in pyridine gave 5′,5′-dimethylspiro[androsta-1,4-diene-17,2′-[1,3]dioxan]-3,12-dione (5) which underwent base-catalysed cleavage to give the novel 9,10-secosteroid (8). Selective reduction of (1) at C17 gave 12α,17β-dihydroxyandrosta-1,4-dien-3-one (9a); selective protection of this at C17, followed by oxidation with chromium trioxide in pyridine gave 17β-(t-butyldimet

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27

Zhao, Jin-Ni, Sheng-Yong Yang, and Li Yang. "3-Amino-N-benzyl-6-(4-fluorophenyl)thieno[2,3-b]pyridine-2-carboxamide." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): o1823. http://dx.doi.org/10.1107/s160053681202212x.

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In the title compound, C21H16FN3OS, the thieno[2,3-b]pyridine system forms dihedral angles of 10.57 (12) and 83.87 (5)° with the fluorophenyl ring at the 6-position and the phenyl ring of the benzyl group, respectively. In the crystal, molecules are linked by weak N—H...N anf N—H...O hydrogen bonds and π–π stacking interactions involving fluorophenyl rings of adjacent molecules, with a centroid–centroid distance of 3.648 (10) Å. In addition, intramolecular N—H...S and N—H...O hydrogen bonds contribute to the stability of the molecular conformation.

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28

Ouzidan, Y., Y. Kandri Rodi, S. Obbade, El Mokhtar Essassi, and Seik Weng Ng. "4-Benzyl-6-bromo-2-(4-methoxyphenyl)-4H-imidazo[4,5-b]pyridine monohydrate." Acta Crystallographica Section E Structure Reports Online 66, no. 4 (2010): o947. http://dx.doi.org/10.1107/s1600536810010391.

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29

Drabina, Pavel, Sergej Karel, Illia Panov, and Milos Sedlak. "ChemInform Abstract: Enantiocatalytic Activity of Substituted 5-Benzyl-2-(pyridine-2-yl)imidazolidine-4-one Ligands." ChemInform 44, no. 35 (2013): no. http://dx.doi.org/10.1002/chin.201335061.

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30

Kowalski, Piotr. "Electrophilic benzylation of the pyridine ring. Action of benzyl chlorides on 2-amino and 2-benzylaminopyridine." Journal of Heterocyclic Chemistry 30, no. 2 (1993): 403–8. http://dx.doi.org/10.1002/jhet.5570300220.

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31

Yalçin, I., I. Oren, O. Temiz, and E. A. Sener. "QSARs of some novel isosteric heterocyclics with antifungal activity." Acta Biochimica Polonica 47, no. 2 (2000): 481–86. http://dx.doi.org/10.18388/abp.2000_4028.

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QSAR analysis of a set of previously synthesized 2,5,6-trisubstituted benzoxazole, benzimidazole and 2-substituted oxazolo(4,5-b)pyridine derivatives tested for growth inhibitory activity against Candida albicans, was performed by using the computer-assisted multiple regression procedure. The activity contributions for either heterocyclic ring systems or substituent effects of these compounds were determined from the correlation equation and the predictions for the lead optimization were described. The resulting QSAR revealed that the oxazolo(4,5-b)pyridine ring system with the substitution of

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32

Nagalakshmi, R. A., J. Suresh, S. Maharani, R. Ranjith Kumar, and P. L. Nilantha Lakshman. "Isotypic crystal structures of 1-benzyl-4-(4-bromophenyl)-2-imino-1,2,5,6,7,8,9,10-octahydrocycloocta[b]pyridine-3-carbonitrile and 1-benzyl-4-(4-fluorophenyl)-2-imino-1,2,5,6,7,8,9,10-octahydrocycloocta[b]pyridine-3-carbonitrile." Acta Crystallographica Section E Structure Reports Online 70, no. 11 (2014): 344–47. http://dx.doi.org/10.1107/s1600536814022016.

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The molecules of the two isotypic title compounds, C25H24BrN3, (I), and C25H24FN3, (II), comprise a 2-iminopyridine ring fused with a cyclooctane ring. In (I), the cyclooctane ring adopts a twisted chair–chair conformation, while in (II), this ring adopts a twisted boat–chair conformation. The dihedral angles between the planes of the pyridine ring and the bromobenzene and phenyl rings are 80.14 (12) and 71.72 (13)°, respectively, in (I). The equivalent angles in (II) are 75.25 (8) and 68.34 (9)°, respectively. In both crystals, inversion dimers linked by pairs of C—H...N interactions generate

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33

Podunavac-Kuzmanovic, Sanja, Sinisa Markov, and Ljiljana Vojinovic. "Physico-chemical characterization and anti- microbial activity of copper(II) complexes with 2-amino and 2-methylbenzimidazole derivatives." Acta Periodica Technologica, no. 35 (2004): 247–54. http://dx.doi.org/10.2298/apt0435247p.

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Copper(II) chloride, in warm ethanolic solution, reacted with 2-amino and 2-methylbenzimidazole derivatives to give complexes of the formula CuL2Cl2?nH2O, where L=1-benzyl-2-aminobenzimidazole 1-(4-methylbenzyl)-2-aminobenzimidazole, 1-benzyl-2-methylbenzimidazole and 1-(4-methylbenzyl)-2-methylbenzimidazole( n=1 or 2). The complexes were characterized by elemental analysis of the metal, molar conductivity magnetic susceptibility measurements and IR spectra. The molar conductivities of copper(II)complexes in dimethyl formamide (DMF) corresponding to a 1:1 type of electrolyte indicate that in a

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34

Wang, Li Hua, Zi Jian Wang, Mei Li Zhao, et al. "Synthesis, Crystal Structure of Tetra-Nuclear Macrocyclic Zn(II) Complex and Its Application as Catalyst for Oxidation of Benzyl Alcohol." Bulletin of Chemical Reaction Engineering & Catalysis 16, no. 4 (2021): 839–46. http://dx.doi.org/10.9767/bcrec.16.4.10978.839-846.

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A new six coordinated tetra-nuclear macrocyclic Zn(II) complex, ZnL4(Phen)2 (1) (HL= 3-bromo-2-hydroxybenzaldehyde-pyridine-2-carbohydrazone, Phen = 1,10-phenanthroline) has been synthesized by the self-assembly of 3-bromo-2-hydroxybenzaldehyde-pyridine-2-carbohydrazone, Zn(CH3COO)2•2H2O, NaOH and 1,10-phenanthroline in water/ethanol (v:v = 1:3) solution. Complex 1 was characterized by elemental analysis, infra red (IR), and single-crystal X-ray diffraction (XRD) analysis. The results show that Zn1 and Zn1b ions are six-coordinated with a distorted octahedral geometric configuration by four O

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35

Chen, Hong, та Kai Yan. "6-Benzyl-2-[(triphenyl-λ5-phosphanylidene)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carbonitrile". Acta Crystallographica Section E Structure Reports Online 67, № 10 (2011): o2548. http://dx.doi.org/10.1107/s1600536811035082.

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36

Chopra, Deepak, K. Nagarajan, and T. N. Guru Row. "5-Benzyl-1-(4-fluorophenyl)-2-phenyl-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridine." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): o1588—o1590. http://dx.doi.org/10.1107/s1600536806010427.

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37

Holzgrabe, U., B. Piening, K. F. Hesse, H. D. Höltje, and M. Worch. "Stereochemistry of 2,6-Dipyridine Substituted N-Benzyl-4-piperidone Mono- and Dicarboxylates and of the Corresponding Reduction Products." Zeitschrift für Naturforschung B 44, no. 5 (1989): 565–74. http://dx.doi.org/10.1515/znb-1989-0512.

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The alkyl N-benzyl-4-piperidone-3-carboxylate (1) is synthesized by a Mannich procedure from pyridine aldehyde, benzylamine and the monoester of acetonedicarboxylate; the corresponding diester 2 is formed by condensation of pyridine aldehyde, benzylamine and dimethyl 3-oxoglutarate. Isomerism is observed with respect to keto-enol tautomerism and cis or trans substitution of the pyridines. The structure of the enol lb (C24H23N3O3) is determined by X-ray analysis: it crystallizes in the triclinic space group P 1̄ with a = 9.965(2), b = 10.476(2), c = 10.838(2) Å, α = 69.48(1), β/3 = 81.56(1), γ

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38

Karthikeyan, N. S., B. Uma Mahesh, K. Sathiyanarayanan, P. Raghavaiah, and R. S. Rathore. "(7E)-5-Benzyl-7-(2-chlorobenzylidene)-3-(2-chlorophenyl)-2-phenyl-3,3a,4,5,6,7-hexahydro-2H-pyrazolo[4,3-c]pyridine." Acta Crystallographica Section E Structure Reports Online 66, no. 7 (2010): o1734. http://dx.doi.org/10.1107/s1600536810023317.

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39

Schnürch, Michael, David Schönbauer, and Florian Lukas. "Toluene and its Derivatives as Atom-Efficient Benzylating Agents for Secondary Amines." Synlett 30, no. 01 (2018): 94–98. http://dx.doi.org/10.1055/s-0037-1610342.

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Toluene as a replacement for common N-benzylating agents, such as benzyl bromide, can be an atom-efficient alternative reagent. Under nickel catalysis and mildly oxidative conditions, it is possible to activate toluene efficiently and use it directly for the benzylation of different 2-aminopyridines. The transformation is not restricted to simple toluene, but also substituted derivatives give the desired product in good yields. Effective cleavage of the pyridine moiety is presented.

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40

Nagalakshmi, R. A., J. Suresh, S. Maharani, R. Ranjith Kumar, and P. L. Nilantha Lakshman. "Crystal structure of 2-benzylamino-4-p-tolyl-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile." Acta Crystallographica Section E Crystallographic Communications 71, no. 2 (2015): 192–94. http://dx.doi.org/10.1107/s2056989015000572.

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The title compound, C23H21N3, comprises a 2-amino-3-cyanopyridine ring fused with a cyclopentane ring. The later adopts an envelope conformation with the central methylene C atom as the flap. The benzyl and andp-tolyl rings are inclined to one another by 56.18 (15)°, and to the pyridine ring by 81.87 (14) and 47.60 (11)°, respectively. In the crystal, molecules are linked by pairs of N—H...Nnitrilehydrogen bonds, forming inversion dimers with anR22(12) ring motif. The dimers are linked by C—H...π and π–π interactions [centroid–centroid distance = 3.7211 (12) Å], forming a three-dimensional fra

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41

Smrčková, Svatava, Kristina Juricová, and Viktor Prutianov. "Study of Amino-Imino Tautomerism in Derivatives of 2-, 4- and 6-Aminonicotinic Acid." Collection of Czechoslovak Chemical Communications 59, no. 9 (1994): 2057–68. http://dx.doi.org/10.1135/cccc19942057.

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13C NMR spectra of p-nitrobenzoyl 2-, 4-, and 6-aminopyridine-3-carboxylates, their hydrochlorides, trifluoroacetates and 1-benzyl derivatives were studied. As found from the chemical shifts of pyridine carbon atoms C-2, C-4 and C-6, the free bases exist in the amino form whereas hydrochlorides and 1-substituted pyridinium derivatives in the imino form. Trifluoroacetates of the 2- and 6-amino derivatives have structure similar to that of amidiniumcarboxylates (parallel hydrogen bonds and partially ionic character) whereas trifluoroacetate of the 4-amino derivative is structurally close to the

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42

KOWALSKI, P. "ChemInform Abstract: Electrophilic Benzylation of the Pyridine Ring. Action of Benzyl Chlorides on 2-Amino and 2-Benzylaminopyridine." ChemInform 24, no. 38 (2010): no. http://dx.doi.org/10.1002/chin.199338196.

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43

Nagalakshmi, R. A., J. Suresh, S. Maharani, R. Ranjith Kumar, and P. L. Nilantha Lakshman. "Crystal structure of 1-benzyl-4-(2,4-dichlorophenyl)-2-imino-1,2,5,6,7,8,9,10-octahydrocycloocta[b]pyridine-3-carbonitrile." Acta Crystallographica Section E Structure Reports Online 70, no. 11 (2014): 441–43. http://dx.doi.org/10.1107/s1600536814023071.

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In the title compound, C25H23Cl2N3, the cyclooctene ring adopts a twist chair–chair conformation. The dihedral angles between the central pyridine ring (r.m.s. deviation = 0.013 Å) and the pendant chlorobenzene and benzyl rings are 78.07 (11) and 87.47 (12)°, respectively. No directional interactions could be identified in the crystal and the packing is governed by van der Waals interactions.

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44

Dharmalingam, V., A. K. Ramasamy, and V. Balasuramanian. "Synthesis and EPR Studies of Copper Metal Complexes of Dyes Derived from Remazol Red B, Procino Yellow, Fast Green FCF, Brilliant Cresyl Blue with Copper Acetate Monohydrate." E-Journal of Chemistry 8, s1 (2011): S211—S224. http://dx.doi.org/10.1155/2011/625365.

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The synthesis and characterization of four new solid dye complexes, CuL2(L= 2-[2-methoxy-5-(propane-1-sulfonyl)-phenyl azo]-naphthalen-1-ol, 5-{[3-(4,6-dihydroxy-[1,3,5]tri azine-2-ylamino)-phenyl]-hydrazones}-1-ethyl-4-methyl-2,6-dioxo-1,2,5,6-tetrahydro-pyridine-3-carboxylic acid diethylamide, 4-{bis-[4-(benzyl-ethyl-amino)-phenyl]-methyl}-phenol and 7-imino-4-methyl-7H-phenoxazine-1,3-diamine) is reported. The mode for ligand coordination has been determined by IR and EPR spectra. The carboxyl and amino group of dyes coordinates to the Cu(II) atom as a unidentate or as a chelating ligand.

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45

Birzan, Liviu, Mihaela Cristea, Victorita Tecuceanu, Anamaria Hanganu, Eleonora-Mihaela Ungureanu, and Alexandru C. Razus. "5-(Azulen-1-yldiazenyl)tetrazoles; Syntheses and Properties." Revista de Chimie 71, no. 5 (2020): 251–64. http://dx.doi.org/10.37358/rc.20.5.8133.

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The tetrazole-5-diazonium salt, obtained by diazotizing 5-aminotetrazole in strong acid solution, was coupled with azulenes in the presence of pyridine to produce 5-(azulen-1-yldiazenyl)tetrazoles in good yields. The tetrazole moiety was monoalkylated in 1- and in 2- position using dimethyl sulfate for methylation and benzyl bromide for benzylation. The excess of alkylating agent generated in small amount tetrazole dialkylated salts. The synthesized compounds were characterized and some of their properties have been investigated, such as optical, magnetical and electrical.

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46

Nagalakshmi, R. A., J. Suresh, S. Maharani, R. Ranjith Kumar, and P. L. Nilantha Lakshman. "Crystal structure of 1-benzyl-4-(4-chlorophenyl)-2-imino-1,2,5,6,7,8,9,10-octahydrocycloocta[b]pyridine-3-carbonitrile." Acta Crystallographica Section E Structure Reports Online 70, no. 10 (2014): 167–69. http://dx.doi.org/10.1107/s160053681401962x.

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The title compound, C25H24ClN3, comprises a 2-iminopyridine ring fused with a cyclooctane ring, which adopts a twist boat–chair conformation. In the crystal, C—H...N interactions formR22(14) ring motifs and molecules are further connected by weak C—H...π interactions. The resulting supramolecular structure is a two-dimensional framework parallel to theabplane.

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47

Wei, Min, Fu Yang, Xuyan Song, et al. "Extraction of Nitrogen Compounds from Tobacco Waste via Thermal Treatment." Energies 13, no. 18 (2020): 4619. http://dx.doi.org/10.3390/en13184619.

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Alkaloids, typical nitrogen compounds, were found to be abundant in tobacco waste. The recovery of alkaloids from tobacco waste for biological pesticides could reduce the use of traditional chemical pesticides and avoid the pollution of farmland by the leaching of alkaloids from tobacco waste. Considering the fact that alkaloids can easily volatilize, thermal treatment is expected to be a potential technology to achieve the release and recovery of alkaloids from tobacco waste. For better understanding of conversion behavior of nitrogen-containing compounds in tobacco waste during thermal treat

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48

Yamato, Takehiko, Kenji Kumamaru, and Hirohisa Tsuzuki. "The metal template effect on O-alkylation of tetrahydroxy[3.1.3.1]metacyclophane with 4-(chloromethyl)pyridine to afford tetrakis- [(4-pyridylmethyl)oxy][3.1.3.1]metacyclophanes and their conformational studies." Canadian Journal of Chemistry 79, no. 10 (2001): 1422–30. http://dx.doi.org/10.1139/v01-115.

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An attempted O-alkylation of the flexible macrocycle tetrahydroxy[3.1.3.1]metacyclophane (1) with 4-(chloromethyl) pyridine (2a) in the presence of NaH under THF reflux gave 1,3-di-O-substitution product distal-3a as a major product. In contrast, tetraol 1 was O-alkylated with 2a in the presence of Cs2CO3 to afford a mixture of two conformers of tetra-O-alkylated product 4a in a ratio of 77:23 (1,4-alternate-4a:partial-cone-4a) in 95% yield. No formation of the cone conformer in the reaction of the tetraol 1 with 2a, in comparison with those with 2-(chloromethyl) pyridine (2b) or benzyl bromid

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49

Datta, Amitabha, Nirmal Kumar Karan, Samiran Mitra, and Georgina Rosair. "Synthesis and Structural Characterization of [Cu(NH2CH2C6H4N=CHC5H5N)Cl2]." Zeitschrift für Naturforschung B 57, no. 9 (2002): 999–1002. http://dx.doi.org/10.1515/znb-2002-0905.

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The compound [Cu(NH2CH2C6H4N=CHC5H5N)Cl2] (1) containing the tridentate Schiff base ligand, which is the 1:1 condensation product of pyridine- 2-carboxaldehyde and 2-amino benzyl amine, was synthesised and its crystal structure has been determined. It is monomeric, space group P1, a = 7.704(1), b = 9.308(2), c = 11.228(2) A˚ , α= 68.97(2), β= 82.23(1), γ= 67.70(1)° and Z = 2. The crystal structure of 1 is based on a five coordinate copper centre with trigonal bipyramidal geometry. The six membered chelate ring possesses a half-chair conformation with C7 most out of the plane made by Cu1, N2, N

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50

Kusumaningtyas, Desy Tri, Didik Prasetyoko, Suprapto Suprapto, Sugeng Triwahyono, Aishah Abdul Jalil, and Afifah Rosidah. "Esterification of Benzyl Alcohol with Acetic Acid over Mesoporous H-ZSM-5." Bulletin of Chemical Reaction Engineering & Catalysis 12, no. 2 (2017): 243. http://dx.doi.org/10.9767/bcrec.12.2.806.243-250.

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In this study, the performance of mesoporous ZSM-5 has been studied on the esterification of acetic acid (AA) with benzyl alcohol (BA). The mesoporous ZSM-5 catalyst has been synthesized with the variation of aging time i.e. 6, 12, and 24 hours at the same temperature, 70 °C. The cation exchange of Na-ZSM-5 to H-ZSM-5 was performed before the catalytic activity test. The acidity type and amount of solids were determined by FT-IR spectroscopy using pyridine as a probe molecule. The characterization by pyridine adsorption showed that at a higher mesoporous surface area, the number of Lewis acid

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