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Journal articles on the topic 'Methyl naphthalene'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Hernández-Téllez, Guadalupe, Gloria E. Moreno, Sylvain Bernès, et al. "Crystal structures of ten enantiopure Schiff bases bearing a naphthyl group." Acta Crystallographica Section E Crystallographic Communications 72, no. 4 (2016): 583–89. http://dx.doi.org/10.1107/s2056989016004692.

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Using a general solvent-free procedure for the synthesis of chiral Schiff bases, the following compounds were synthesized and their crystal structures determined: (S)-(+)-2-{[(1-phenylethyl)imino]methyl}naphthalene, C19H17N, (1), (S)-(+)-2-({[(4-methylphenyl)ethyl]imino}methyl)naphthalene, C20H19N, (2), (R)-(−)-2-({[(4-methoxylphenyl)ethyl]imino}methyl)naphthalene, C20H19NO, (3), (R)-(−)-2-({[(4-fluorophenyl)ethyl]imino}methyl)naphthalene, C19H16FN, (4), (S)-(+)-2-({[(4-chlorophenyl)ethyl]imino}methyl)naphthalene, C19H16ClN, (5), (S)-(+)-2-({[(4-bromophenyl)ethyl]imino}methyl)naphthalene, C19H

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2

Halton, Brian, Carissa S. Jones, Peter T. Northcote, and Roland Boese. "Studies in the Cycloproparene Series: Formation of a New Dimer of 1H-Cyclopropa[b]naphthalene." Australian Journal of Chemistry 52, no. 4 (1999): 285. http://dx.doi.org/10.1071/c98179.

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1-(Trimethylsilyl)-1H-cyclopropa[b]naphthalene (10) and its 1-methyl derivative (11) have been isolated as pure compounds from use of a lipophilic size exclusion gel. Acylation of the 1H-cyclopropa[b]naphthalenyl anion (2) is effected with N,N -dimethyl-benzamide and -acetamide to give (5) and (6), respectively. Analogous reactions with the 1-(trimethylsilyl)-1H-cyclopropa[b]naphthalenyl anion (9) do not yield the 1-acyl-1-(trimethylsilyl)-1H-cyclopropa[b]naphthalenes (12) and (13); instead the novel 6-methyl- 7H-dibenzo[b,g]fluorene (15) results from attempted acetylation. Compound (15), a fo

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3

Wu, Kai, Yuting Gao, Zhenni Yu, et al. "A facile fluorescent chemosensor based on naphthalene-derived Schiff base for zinc ions in aqueous solution." Anal. Methods 6, no. 11 (2014): 3560–63. http://dx.doi.org/10.1039/c4ay00431k.

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4

Xia, Min, Shao-Qin Ge, and Xiang-Sheng Li. "Difluoro[1-(1-naphthyliminomethyl)-2-naphtholato-N,O]boron." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o2625—o2626. http://dx.doi.org/10.1107/s160053680602068x.

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The title compound, C21H14BF2NO, was synthesized by the reaction of 3-[(E)-(naphthalen-1-ylimino)methyl]naphthalen-2-ol, diisopropylethylamine and boron trifluoride etherate. The mean planes of the two naphthalene systems make a dihedral angle of 71.97 (4)°. The crystal packing is stabilized by π–π stacking interactions and van der Waals forces.

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5

Varma, M. Surendra, S. Sivaji Ganesan, and G. Muruganandam. "Side Chain Bromination of 2- Methyl Naphthalene by an Electro Chemical Method." International Journal of Emerging Research in Management and Technology 7, no. 2 (2018): 47. http://dx.doi.org/10.23956/ijermt.v7i2.16.

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A simple method for the preparation of 2- Bromo Methyl Naphthalene from 2- Methyl Naphthalene is reported. The electrolysis was carried out in a divided electrochemical cell fitted with graphite electrode at 0°C. The conversion of 2- Methyl naphthalene varies from 70 to 75 % and the selectivity is observed 92%. The effects of different electrode, different solvent, and different current densities are studied and reported.

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6

Gallucci, J. C., D. J. Hart, and D. G. J. Young. "Nucleophile–Electrophile Interactions in 1,8-Disubstituted Naphthalenes: Structures of Three 1-Naphthaldehydes and a 1-Naphthyl Methyl Ketone." Acta Crystallographica Section B Structural Science 54, no. 1 (1998): 73–81. http://dx.doi.org/10.1107/s0108768197009440.

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4,8-Dimethoxy-5-(tosyloxy)-1-naphthaldehyde (1) and 8-methoxy-5-(tosyloxy)-1-naphthaldehyde (2) crystallize such that the formyl groups approach coplanarity with the naphthalene rings. 4′,8′-Dimethoxy-5′-(tosyloxy)-1′-acetonaphthone (4), however, crystallizes such that the acetyl group approaches orthogonality to the naphthalene ring. In all three compounds the methoxy group and carbonyl groups exhibit a leaning effect typical of nucleophile–electrophile interactions in 1,8-disubstituted naphthalenes. 8-(Benzoyloxy)-4-methoxy-1-naphthaldehyde (3) crystallizes with the formyl group nearly copla

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7

Maniero, Anna Lisa, Antonio Toffoletti, and Carlo Corvaja. "ENDOR Spectra of 2-Methyl-Naphthalene-TCNB Triplet Trap in Naphthalene-TCNB Single Crystals." Zeitschrift für Naturforschung A 48, no. 3 (1993): 497–504. http://dx.doi.org/10.1515/zna-1993-0309.

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Abstract Naphthalene-TCNB charge transfer crystals doped with 2-methyl naphthalene illuminated by visible light give rise to triplet traps which have been identified by EPR and ENDOR spectroscopy as 2-methyl naphthalene-TCNB CT complexes in their first excited triplet state. The complete hyperfine tensors of all the 2-methyl naphthalene protons have been obtained by analysis of the variation of the ENDOR frequencies with the crystal orientation in the magnetic field. The structure of the CT complex, the spin distribution and the CT character are discussed.

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8

Reza, Annisa Indah, Kento Iwai, and Nagatoshi Nishiwaki. "A Study of the Correlation between the Bulkiness of peri-Substituents and the Distortion of a Naphthalene Ring." Molecules 28, no. 14 (2023): 5343. http://dx.doi.org/10.3390/molecules28145343.

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A systematic study on the distortion of a naphthalene ring was performed using steric repulsion between peri-substituents at the 1- and 8-positions. The introduction of bromo groups into the methyl groups of the 1,8-dimethylnaphthalene enhanced the steric repulsion to distort the naphthalene ring. X-ray crystallography revealed that 1,8-bis(bromomethyl)naphthalene had a vertical distortion with a 11.0° dihedral angle (α) between peri-substituents which disturbed the coplanarity of the naphthalene ring. On the other hand, the dihedral angle of 1,8-bis(dibromomethyl)naphthalene was smaller (α =

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9

Bogdanov, Jane, and Przemyslaw Maslak. "2-Methyl-7-(phenylsulfanylmethyl)naphthalene." Molbank 2010, no. 2 (2010): M670. http://dx.doi.org/10.3390/m670.

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10

Mohammed, Mohammed Hassan, Monther Faisal Mahdi, and Fadhil Mohsin Hamed. "Synthesis of 2, 3-Dihydro-1,4-naphthaquinone Derivatives for Targeting the Altered Cancer Cells Metabolism." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 7 (2013): 472–81. http://dx.doi.org/10.24297/jac.v12i7.2804.

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A new four derivatives of 2,3-Dihydro-1,4-naphthaquinonewere synthesizedas possible bioreductiveprodrugs for5-fluorouracil (5-Fu),Mercaptopurine (6-MP), N-acetyl cysteine (NAC)and 3-bromopyrovic acid (3-BPA) to selectively deliver the drugs into the cancer cells and these are:2-((5-fluoro-1,2-dihydropyrimidin-4-yloxy)methyl)-3-hydroxy naphthalene-1,4dione(compound A),2-((9H-purin-6-ylthio)-3-hydroxyl naphthalene-1,4dione(compound B)acetmido-3-((3-methyl-1,4-dihydronaphthalen-2-yl)methylthio)propanoicacid (compound C)and hydroxy-1,4-dioxo-1,4-dihydronaphthalen-2-yl)methyl3-bromo-2-oxopropanoate

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11

Mohammed, Mohammed Hassan, Monther Faisal Mahdi, and Fadhil Mohsin Hamed. "Synthesis of 2, 3-Dihydro-1,4-naphthaquinone Derivatives for Targeting the Altered Cancer Cells Metabolism." JOURNAL OF ADVANCES IN CHEMISTRY 4, no. 2 (2008): 472–81. http://dx.doi.org/10.24297/jac.v4i2.2708.

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A new four derivatives of 2,3-Dihydro-1,4-naphthaquinonewere synthesizedas possible bioreductiveprodrugs for5-fluorouracil (5-Fu),Mercaptopurine (6-MP), N-acetyl cysteine (NAC)and 3-bromopyrovic acid (3-BPA) to selectively deliver the drugs into the cancer cells and these are:2-((5-fluoro-1,2-dihydropyrimidin-4-yloxy)methyl)-3-hydroxy naphthalene-1,4dione(compound A),2-((9H-purin-6-ylthio)-3-hydroxyl naphthalene-1,4dione(compound B)acetmido-3-((3-methyl-1,4-dihydronaphthalen-2-yl)methylthio)propanoicacid (compound C)and hydroxy-1,4-dioxo-1,4-dihydronaphthalen-2-yl)methyl3-bromo-2-oxopropanoate

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12

Yuan, Changchun, Peng Nan, Suhua Shi, and Yang Zhong. "Chemical Composition of the Essential Oils of Two Chinese Endemic Meconopsis Species." Zeitschrift für Naturforschung C 58, no. 5-6 (2003): 313–15. http://dx.doi.org/10.1515/znc-2003-5-603.

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Abstract The essential oils from two Chinese endemic Meconopsis species, i. e., M. punicea and M. delavayi, were analyzed by using GC-MS for the first time. The major constituents were hexadecanoic acid (16.8%), 1,2-dimethyl naphthalene (11.4%), 1,4-dimethyl naphthalene (6.6%), 1,3-dimethyl-5-ethyl naphthalene (5.9%), and 3-methyl biphenyl (5.6%) for M. punicea, and hexadecanoic acid (9.9%), 1,2-dimethyl naphthalene (7.9%), 1,3-dimethyl-5-ethyl naphthalene (6.2%), tetradecane (5.9%), and hexyl cinnamaldehyde (5.5%) for M. delavayi.

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13

Herbst, Thomas, and Günter P. Schiemenz. "Notizen: Chiralität durch gehinderte Rotation: Isolierung optisch aktiver Naphthylamine / Chirality Caused by Hindered Rotation: Isolation of Optically Active Naphthylamines." Zeitschrift für Naturforschung B 44, no. 7 (1989): 866–68. http://dx.doi.org/10.1515/znb-1989-0725.

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14

Masterson, Douglas S., Christine M. Tratz, B. Anthony Behrens, and Daniel T. Glatzhofer. "Hydrogenation of Iron(II) Cationic Complexes of Naphthalene and Methyl-Substituted Naphthalenes." Organometallics 19, no. 3 (2000): 244–49. http://dx.doi.org/10.1021/om990738t.

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15

Kanga, Shahrukh A., James S. Bonner, Cheryl A. Page, Marc A. Mills, and Robin L. Autenrieth. "Solubilization of Naphthalene and Methyl-Substituted Naphthalenes from Crude Oil Using Biosurfactants." Environmental Science & Technology 31, no. 2 (1997): 556–61. http://dx.doi.org/10.1021/es9604370.

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16

Fortin, Francois, Seong-Ho Yoon, Yozo Korai, and Isao Mochida. "Reorganization of molecular alignment in naphthalene and methyl-naphthalene derived pitches." Carbon 32, no. 5 (1994): 979–89. http://dx.doi.org/10.1016/0008-6223(94)90058-2.

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17

Bender, Christopher Owen, Donald Laverne Bengtson, Douglas Dolman, and Ryan Todd McKay. "The photochemistry of 8-methyl 1-2,3-benzobicyclo[4.2.0]octa-2,4,7-triene." Canadian Journal of Chemistry 72, no. 6 (1994): 1556–64. http://dx.doi.org/10.1139/v94-194.

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8-Methyl-2,3-benzobicyclo[4.2.0]octa-2,4,7-triene (20) was prepared by Shapiro reaction from 8-methyl-2,3-benzobicyclo[4.2.0]octa-2,7-dien-4-one (19). Triene 20 was found to be thermally and photochemically reactive. 6-Methylbenzocyclooctatetraene (i.e., 6-methyl COT 21) was the unique product formed when solutions of 20 were heated at 150 °C for 10 h. The direct irradiation of triene 20 gave 6-methylbenzosemibullvalene (i.e., SB 22, 46%, Φ = 0.073), 5-methyl-7,8-benzotetra-cyclo[3.3.02,4.03,6]oct-7-ene (23, 35%, Φ = 0.062), 6-methyl COT 21 (4%, Φ = 0.008), 7-methyl COT 24 (1%, Φ = 0.002), and

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18

Çelik, Ísmail, Mehmet Akkurt, Ayşegül Şenocak, Osman Çakmak, Laura Torre-Fernández, and Santiago García-Granda. "1,4-Bis(methylsulfanyl)naphthalene." Acta Crystallographica Section E Structure Reports Online 65, no. 6 (2009): o1376. http://dx.doi.org/10.1107/s1600536809018650.

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The molecule of the title compound, C12H12S2, is close to planar, with the methyl C atoms deviating by 0.019 (1) and 0.221 (2) Å from the naphthalene mean plane. In the crystal structure, the shortest S...S contact of 3.6864 (9) Å is longer than the van der Waals contact distance.

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19

Wei, Sha Sha, Ren Jie Wang, and Gang Liu. "Synthesizes and Properties of a New Unsymmetrical Diarylethene with a Naphthalene Moiety." Advanced Materials Research 788 (September 2013): 219–22. http://dx.doi.org/10.4028/www.scientific.net/amr.788.219.

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An unsymmetrical diarylethene with a naphthalene moiety was synthesized. The naphthalene was connected directly to the central perfluorocyclopentene ring as an aryl moiety and available to participate in photoisomerization reaction. This compound exhibited reversible photochromism, changing from colorless to SandyBrown after irradiation with UV light both in solution and in poly-methyl methacrylate (PMMA) amorphous film. Also, it exhibited remarkable fluorescence switching in the solid state. The electron-withdrawing substituents evidently enhanced the some propeties of diarylethenes with a na

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20

Rojas, Janne, Alexis Buitrago, Luis B. Rojas, Antonio Morales, and Shirley Baldovino. "Chemical Composition of the Essential Oil of Leaves and Roots of Ottoa oenanthoides (Apiaceae) from Mérida, Venezuela." Natural Product Communications 5, no. 7 (2010): 1934578X1000500. http://dx.doi.org/10.1177/1934578x1000500728.

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Essential oils extracted by hydrodistillation from leaves and roots of Ottoa oenanthoides Kunth (Apiaceae) were analyzed by GC/MS. The oils, obtained in yields of 0.10% and 0.66%, respectively, each contained four compounds, which were identified from their mass spectra and retention indices (RI). The major compound identified was 2-methoxy-8-methyl-1,4-naphthalindione (59.9% leaves, and 62.8%, roots), followed by 7-methoxy-1-naphthol (18.3% leaves and 17.3% roots), 2-naphthalenol (18.6% leaves and 15.0% roots), and 3-methoxy-2-naphthalenol (3.1% leaves and 2.1% roots). To the best of our know

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21

Fall, Serigne Abdou Khadir, Sara Hajib, Younas Aouine, et al. "X-ray Structure Determination of Naphthalen-2-yl 1-(Benzamido(diethoxyphosphoryl)methyl)-1H-1,2,3-triazole-4-carboxylate." Molbank 2022, no. 2 (2022): M1360. http://dx.doi.org/10.3390/m1360.

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We have previously published on a new triazolic phosphonic α-amino ester in position 4 on the triazole ring of a naphthalene ester. The aim of the present paper was to describe its crystallographic study by XRD. The crystal structure of naphthalen-2-yl 1-(benzamido(diethoxyphosphoryl)methyl)-1H-1,2,3-triazole-4-carboxylate was determined by single-crystal X-ray diffraction. This compound crystallizes in the monoclinic system, space group P21/c. The naphthalene system is almost planar and makes dihedral angles of 67.1(2)° and 63.9(2)° with the triazole ring and the phenyl cycle, respectively. T

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22

Abelt, Christopher, Ian Day, Junkai Zhao, and Robert Pike. "Fluorescence of Half-Twisted 10-Acyl-1-methyltetrahydrobenzoquinolines." Molecules 29, no. 13 (2024): 3016. http://dx.doi.org/10.3390/molecules29133016.

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The steric interference of proximal dialkyl amino and acyl groups at the peri (1,8) positions of naphthalene affects the intramolecular charge transfer fluorescence. Previous studies indicate that acyl and freely rotating dimethyl amino groups twist toward coplanarity with the naphthalene ring in the excited state. The present study examines the effect of constraining the amino group in a ring. The photophysical properties of 2,2-dimethyl-1-(1-methyl-1,2,3,4-tetrahydrobenzo[h]quinolin-10-yl)propan-1-one (4), ethyl 1-methyl-1,2,3,4-tetrahydrobenzo[h]quinoline-10-carboxylate (5), and 1-methyl-1,

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23

Islam, Kobirul, R. Sidick Basha, Ajaz A. Dar, Deb K. Das, and Abu T. Khan. "A direct approach for the expedient synthesis of unsymmetrical ethers by employing bromodimethylsulfonium bromide (BDMS) mediated C–S bond cleavage of naphthalene-2-ol sulfides." RSC Advances 5, no. 97 (2015): 79759–64. http://dx.doi.org/10.1039/c5ra14563e.

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24

Abelt, Christopher, and Kirsten Sweigart. "Twisted 8-Acyl-1-dialkyl-amino-naphthalenes Emit from a Planar Intramolecular Charge Transfer Excited State." Photochem 4, no. 1 (2024): 1–13. http://dx.doi.org/10.3390/photochem4010001.

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Fluorescence from dialkylamino donor–acyl acceptor substituted 1,8-naphthalene derivatives can occur either from a planar (PICT) or a twisted (TICT) intramolecular charge transfer excited state. The photophysical properties of 8-acetyl-1-(dimethyl-amino)naphthalene (3) and 8-pivaloyl-1-(dimethyl-amino)naphthalene (4) are compared with 1-methyl-2,3-dihydronaphtho[1,8-bc]azepin-4(1H)-one (5). In 3 and 4, both the carbonyl and amino groups are forced to twist out of the plane of the naphthalene ring. In 5, these groups are nearly coplanar with the naphthalene. Neither 3 nor 4 fluoresce as strongl

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25

Danish, Muhammad, Muhammad Nawaz Tahir, Asif Hussain, Muhammad Ashfaq, and Muhammad Nadeem Sadiq. "Crystal structure of 4-{[(naphthalen-2-yl)sulfonylamino]methyl}cyclohexanecarboxylic acid." Acta Crystallographica Section E Crystallographic Communications 71, no. 3 (2015): o145. http://dx.doi.org/10.1107/s2056989015002054.

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The title compound, C18H21NO4S, is a new sulfonamide derivative of tranexamic acid. In the crystal, molecules form inversion dimersviaO—H...O hydrogen bonds involving the carboxylic acid groups. Hydrogen bonding between the sulfonamide N—H group and the carboxylic acid O atom assembles the dimers into thick layers parallel to (100). The naphthalene groups of adjacent layers are arranged in a herring-bone motif. There are C—H...π interactions between the naphthalene rings of neighbouring layers.

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26

Ma, Celena, Ervin Pejo, Megan McGrath та ін. "Competitive Antagonism of Anesthetic Action at the γ-Aminobutyric Acid Type A Receptor by a Novel Etomidate Analog with Low Intrinsic Efficacy". Anesthesiology 127, № 5 (2017): 824–37. http://dx.doi.org/10.1097/aln.0000000000001840.

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Abstract Background The authors characterized the γ-aminobutyric acid type A receptor pharmacology of the novel etomidate analog naphthalene–etomidate, a potential lead compound for the development of anesthetic-selective competitive antagonists. Methods The positive modulatory potencies and efficacies of etomidate and naphthalene–etomidate were defined in oocyte-expressed α1β3γ2L γ-aminobutyric acid type A receptors using voltage clamp electrophysiology. Using the same technique, the ability of naphthalene–etomidate to reduce currents evoked by γ-aminobutyric acid alone or γ-aminobutyric acid

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27

Öller, Hans-Jürgen, Paul Kiprof, and Hubert Schmidbaur. "Flexible ein-und zweikernige Aralkyl-und Aralkoxyquecksilberverbindungen als Modelle zum Nachweis von Hg(II)-Hg(II)-W echselwirkungen / Flexible Mono-and Dinuclear Aralkyl and Aralkoxy Mercury Compounds for Detection of Hg (II)-Hg (II) Interactions." Zeitschrift für Naturforschung B 47, no. 3 (1992): 333–43. http://dx.doi.org/10.1515/znb-1992-0306.

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The aralkyl and aralkoxy mercury(II) compounds 1-(chloromercury(II)methyl)naphthalene (1), bis[1-naphthylmethyl]mercury(II) (2), 1-naphthyl(1-naphthylmethyl)mercury(II) (3), 1,8-bis[chloromercury(II)methyl]naphthalene (4), methylmercury(II)-benzylate (5), methylmercury( II)-1-naphthylmethylate (6) and bis[methylmercury(II)]μ-1,8-naphthalenediyl-bismethylate (7) have been prepared and characterized by means of NMRspectroscopy, mass spectrometry and elemental analysis. The molecular structure of compound 2 has been determined by single X-ray crystallography. The unit cell of 2 contains two cryst

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28

Mahmood, Khalid, Zareen Akhter, Fouzia Perveen, et al. "Synthesis, DNA binding and biological evaluation of benzimidazole Schiff base ligands and their metal(ii) complexes." RSC Advances 13, no. 18 (2023): 11982–99. http://dx.doi.org/10.1039/d3ra00982c.

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Two novel benzimidazole ligands (E)-2-((4-(1H-benzo[d]imidazole-2-yl)phenylimino)methyl)-6-bromo-4-chlorophenol and (E)-1-((4-(1H-benzo[d]imidazole-2-yl)phenylimino)methyl) naphthalene-2-ol and their Cu(ii), Ni(ii), Pd(ii) and Zn(ii) complexes were designed and synthesized.

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29

Senthil, K., S. Kalainathan, and A. Ruban Kumar. "Effect of additives on the large-size growth of 4-N,N-dimethylamino-4-N-methyl stilbazolium naphthalene-2-sulfonate (DSNS) single crystal: an efficient stilbazolium derivative NLO crystal with potential terahertz wave properties." CrystEngComm 16, no. 42 (2014): 9847–56. http://dx.doi.org/10.1039/c4ce01350f.

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30

Girimanchanaika, Swamy Savvemala, Dukanya Dukanya, Ananda Swamynayaka, et al. "Investigation of NPB Analogs That Target Phosphorylation of BAD-Ser99 in Human Mammary Carcinoma Cells." International Journal of Molecular Sciences 22, no. 20 (2021): 11002. http://dx.doi.org/10.3390/ijms222011002.

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The design and development of a small molecule named NPB [3-{(4(2,3-dichlorophenyl)piperazin-1-yl}{2-hydroxyphenyl)methyl}-N-cyclopentylbenzamide], which specifically inhibited the phosphorylation of BAD at Ser99 in human carcinoma cells has been previously reported. Herein, the synthesis, characterization, and effect on cancer cell viability of NPB analogs, and the single-crystal X-ray crystallographic studies of an example compound (4r), which was grown via slow-solvent evaporation technique is reported. Screening for loss of viability in mammary carcinoma cells revealed that compounds such

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31

Parsland, Charlotte, Phuoc Hoang Ho, Patricia Benito, Ann-Charlotte Larsson, Giuseppe Fornasari, and Jan Brandin. "Ba-Ni-Hexaaluminate as a New Catalyst in the Steam Reforming of 1-Methyl Naphthalene and Methane." Catalysis Letters 150, no. 6 (2019): 1605–17. http://dx.doi.org/10.1007/s10562-019-03042-9.

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Abstract This work investigates the long-term performance of Ba-Ni-hexaaluminate, BaNixAl12−xO19 as a catalyst in reforming of 1-methyl naphthalene and/or methane in a model-gas simulating that from a circulating fluidized bed (CFB) gasifier during 23–29 h in a lab scale set-up, as well as the tendency for coke formation, sintering and sulphur poisoning. 1-Methyl naphthalene is used as a tar model substance. The Ba-Ni-hexaaluminate induces a high conversion of both compounds in the temperatures investigated (850 and 950 °C) under sulphur-free conditions. In sulphur-containing gas, the methane

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32

Hola, Emilia, Monika Topa, Anna Chachaj-Brekiesz, et al. "New, highly versatile bimolecular photoinitiating systems for free-radical, cationic and thiol–ene photopolymerization processes under low light intensity UV and visible LEDs for 3D printing application." RSC Advances 10, no. 13 (2020): 7509–22. http://dx.doi.org/10.1039/c9ra10212d.

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33

Schulte, Marcus, and François P. Gabbaï. "Synthesis of heteronuclear bifunctional Lewis acids by transmetalation of 1,8-bis(trimethylstannyl)naphthalene with BCl3." Canadian Journal of Chemistry 80, no. 10 (2002): 1308–12. http://dx.doi.org/10.1139/v02-177.

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Reaction of 1,8-bis(trimethylstannyl)naphthalene (1) with an excess of BCl3 at 78°, followed by warming to 0°C, results in the exclusive formation of the novel bifunctional Lewis acid 1-(chlorodimethylstannyl)-8-(dichloroboryl)naphthalene (2), a compound in which a boryl and a stannyl moiety coexist at the peri-positions of a naphthalene core. At elevated temperature compound 2 undergoes a chloridemethyl exchange, which affords 1-(dichloromethylstannyl)-8-(chloromethylboryl)naphthalene (3). Compounds 2 and 3 have been characterized by multi-nuclear NMR spectroscopy. The single crystal X-ray

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34

Abu-Dief, Ahmed M., Mohammed S. M. Abdelbaky, and Santiago Garcia-Granda. "Crystal structure of (E)-1-{[(3,5-dimethylphenyl)imino]methyl}naphthalen-2-ol." Acta Crystallographica Section E Crystallographic Communications 71, no. 7 (2015): o496—o497. http://dx.doi.org/10.1107/s2056989015011548.

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The title compound, C19H17NO, has anEconformation about the N=C bond. The molecule is relatively planar, with the benzene ring and naphthalene ring plane being inclined to one another by 4.28 (10)°. There is an intramolecular O—H...N hydrogen bond generating anS(6) ring motif. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming chains propagating along [100]. Within the chains there are π–π interactions involving the benzene ring and the naphthalene ring system of an adjacent molecule [inter-centroid distance = 3.6405 (14) Å].

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35

Hale, S. J., and L. A. Melton. "Absolute Quantum Yields for Exciplex Fluorescence." Applied Spectroscopy 44, no. 1 (1990): 101–5. http://dx.doi.org/10.1366/0003702904085895.

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The absolute quantum yields for exciplex fluorescence in four solutions which have potential as exciplex-based vapor/liquid visualization systems have been measured. The room-temperature absolute quantum yields for 10% dibutyl-aniline/0.4%, 1-cyanonaphthalene, 12.5% 1-methyl-naphthalene/0.5% N,N,N′,N′-tetramethyl- p-phenylenediamine (TMPD), 10% trihexylamine/1.0% 1-cyanonaphthalene, and 10% naphthalene/1.0% TMPD in hexadecane or cyclohexane are 0.03 ± 0.005, 0.05 ± 0.002 (308 nm), 0.02 ± 0.001, and 0.16 ± 0.021, respectively. The temperature dependence of the absolute quantum yield for the 10%

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36

Chen, Ning-Ning, Chen Zhang, and Jian-Qing Tao. "A twofold interpenetrating two-dimensional zinc(II) coordination polymer: synthesis, crystal structure and physical properties." Acta Crystallographica Section C Structural Chemistry 76, no. 9 (2020): 850–55. http://dx.doi.org/10.1107/s205322962001058x.

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A novel twofold interpenetrating two-dimensional (2D) ZnII coordination framework, poly[[(μ-1,3-bis(2-methyl-1H-imidazol-1-yl)benzene-κ2 N 3:N 3)(μ-naphthalene-2,6-dicarboxylato-κ2 O 2:O 6)zinc(II)] dimethylformamide monosolvate], {[Zn(C12H6O4)(C14H14N4)]·C3H7NO} n or {[Zn(1,3-BMIB)(NDC)]·DMF} n (I), where H2NDC is naphthalene-2,6-dicarboxylic acid, 1,3-BMIB is 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and DMF is dimethylformamide, was prepared and characterized through IR spectroscopy, elemental analysis, thermal analysis and single-crystal X-ray diffraction. Single-crystal X-ray diffraction

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37

Liu, Qi Mei, та Wan Xi Peng. "80°С-Based TD-GC/MS Analysis of Chemical Components from Branches of Cinnamomum camphora". Key Engineering Materials 480-481 (червень 2011): 466–71. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.466.

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The analytical result by 80°С-based TD-GC/MS showed that 65 peaks were obtained from the helium volatiles from the fresh branches of Cinnamomum camphora and 60 chemical compounds were identified. The results showed that the main components were as: 1,3-Benzodioxole, 5-(2-propenyl)- (12.629%), Tricyclo[2.2.1.0(2,6)]heptane, 1,7-dimethyl-7-(4-methyl-3-pentenyl)-, (-)- (10.302%), 3-Cyclohexene-1-methanol, .alpha.,.alpha.4-trimethyl- (9.084%), Bicyclo[2.2.1] heptan-2-one, 1,7,7-trimethyl-, (1R)- (7.406%), Nerolidol (6.695%), Bicyclo[2.2.1]heptane, 2-methyl-3-methylene-2-(4-methyl-3-pentenyl)-, (1S

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38

Yu, Ruihong, Mehdi Nemati, Gordon Hill, and John Headley. "Mass Transfer and Bioremediation of Naphthalene and Methyl Naphthalenes in Baffled and Bead Mill Bioreactors." Canadian Journal of Chemical Engineering 84, no. 3 (2008): 349–55. http://dx.doi.org/10.1002/cjce.5450840311.

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39

Fun, Hoong-Kun, Kullapa Chanawanno, and Suchada Chantrapromma. "(E)-1-Methyl-4-[2-(2-naphthyl)vinyl]pyridinium iodide." Acta Crystallographica Section E Structure Reports Online 65, no. 6 (2009): o1406—o1407. http://dx.doi.org/10.1107/s1600536809019114.

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In the title compound, C18H16N+·I−, the cation is disordered over two orientations related by a 180° rotation about its long axis with occupancies of 0.554 (7) and 0.446 (7). Both disorder components exist in anEconfiguration. The dihedral angle between the pyridinium ring and the naphthalene ring system is 4.7 (6)° in the major disorder component and 1.6 (8)° in the minor component. In the crystal structure, centrosymmetrically related cations are stacked along theaaxis, with significant π–π interactions between the pyridinium ring and the naphthalene ring system [centroid-centroid distance =

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40

Hooker, Jordan P., Florian Feist, Laura Delafresnaye, Federica Cavalli, Leonie Barner, and Christopher Barner-Kowollik. "On-demand acid-gated fluorescence switch-on in photo-generated nanospheres." Chemical Communications 56, no. 37 (2020): 4986–89. http://dx.doi.org/10.1039/d0cc01557a.

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Polymer particles are synthesized using a photo-active ortho-methyl benzaldehyde with a terminal alkyne for cross-linking. The reactive 1,4-dihydronaphthalene at every cross-linking point undergoes aromatisation to a fluorescent naphthalene upon exposure to acid.

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41

Govindhan, Muniyappan, Kathavarayan Subramanian, Vijayan Viswanathan, and Devadasan Velmurugan. "Crystal structure of 2-{[(naphthalen-1-yl)oxy]methyl}-5-(2,4,5-trifluorophenyl)-1,3,4-oxadiazole." Acta Crystallographica Section E Crystallographic Communications 71, no. 3 (2015): o190—o191. http://dx.doi.org/10.1107/s2056989015003205.

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In the title compound C19H11F3N2O2, the oxadiazole ring and the naphthalene ring system are approximately planar (r.m.s. deviations of 0.001 and 0.020 Å, respectively) and the oxadiazole ring makes dihedral angles of 13.11 (1) and 7.59 (1)° with the naphthalene ring system and the trifluorophenyl ring, respectively. In the crystal, C—H...N hydrogen bonds link molecules into chains along thea-axis direction, while C—H...F contacts form additional chains along theacdiagonal. These contacts generate sheets of molecules approximately parallel to the (011) plane.

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42

Senthil, K., S. Kalainathan, A. Ruban Kumar, and P. G. Aravindan. "Investigation of synthesis, crystal structure and third-order NLO properties of a new stilbazolium derivative crystal: a promising material for nonlinear optical devices." RSC Adv. 4, no. 99 (2014): 56112–27. http://dx.doi.org/10.1039/c4ra09112d.

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A new organic stilbazolium derivative crystal 2-[2-(3-hydroxy-4-methoxy-phenyl)-vinyl]-1-methyl-pyridinium naphthalene-2-sulfonate dehydrate (C<sub>25</sub>H<sub>23</sub>NO<sub>5</sub>S·2H<sub>2</sub>O) (VSNS) was synthesized successfully.

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43

Liu, Qingjian. "N-Methyl-1,2-diphenylcyclobuteno[3,4-a]naphthalene-2,3-dicarboximide." Acta Crystallographica Section E Structure Reports Online 63, no. 6 (2007): o2901. http://dx.doi.org/10.1107/s1600536807022568.

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44

Govindhan, Muniyappan, Kathavarayan Subramanian, Vijayan Viswanathan, and Devadasan Velmurugan. "Crystal structure of 2-(4-fluoro-3-methylphenyl)-5-{[(naphthalen-1-yl)oxy]methyl}-1,3,4-oxadiazole." Acta Crystallographica Section E Crystallographic Communications 71, no. 4 (2015): o229—o230. http://dx.doi.org/10.1107/s2056989015004144.

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The title compound, C20H15FN2O2, adopts an almost planar conformation. The oxadiazole ring makes dihedral angles of 13.90 (1) and 7.93 (1)° with the naphthalene ring system and benzene ring, respectively, while the naphthalene ring system and benzene ring are inclined to one another by 6.35 (1)°. In the crystal, adjacent molecules are linkedviaC—H...N hydrogen bonds, forming chains propagating along [100]. There are also π–π interactions present [intercentroid distances = 3.5754 (9) and 3.7191 (12) Å], linking the chains to form ribbons lying parallel to (011).

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45

Brown, RFC, KJ Coulston, FW Eastwood, and S. Saminathan. "Detection of the 1,2-Didehydronaphthalene to 1H-Indenylidenecarbene Rearrangement by Intramolecular Trapping in a Flash Vacuum Pyrolytic Reaction." Australian Journal of Chemistry 40, no. 1 (1987): 107. http://dx.doi.org/10.1071/ch9870107.

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Flash vacuum pyrolysis of 9-methyl-1,3-dihydronaphtho[1,2-c]furan-1,3-dione (8) at 750-880� gave exclusively 1H-cyclopent[ cd ]indene (9) and of 8-methyl-1,2-dihydrocyclobuta[a]naphthalene-1.2-dione (10) at 600-840� gave a mixture of (9) and acenaphthylene. Acenaphthylen-4-ol (12) was synthesized and found to be stable to flash vacuum pyrolysis over thetemperature range 600-900�. These findings are discussed in relation to the rearrangement described in the title.

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46

Do, Lien Thi, Huy Nguyen-Phu, Ngoc Nhiem Pham, Dong Hwi Jeong, and Eun Woo Shin. "Highly Dispersed Nickel Nanoparticles on Hierarchically Ordered Macroporous Al2O3 and Its Catalytic Performance for Steam Reforming of 1-Methyl Naphthalene." Catalysts 12, no. 12 (2022): 1542. http://dx.doi.org/10.3390/catal12121542.

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In this study, we investigate the effect of a hierarchically ordered macroporous structure of alumina support on the steam reforming of 1-methyl naphthalene with mesoporous alumina-supported nickel and potassium (xK/Ni–MeAl), and macroporous alumina-supported nickel and potassium (xK/Ni–MaAl) catalysts. Hierarchically ordered macroporosity in Al2O3 supports plays an important role in maintaining the high Ni dispersion through multiple interactions in Ni–K over AlO4 tetrahedra in alumina. This, in turn, improves the catalytic performance of steam reforming, including high gas yields, turnover f

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47

Pekdemir, Merve, Zarife Sibel Şahin, Şamil Işık, Ayşen Alaman Ağar, Sema Öztürk Yıldırım, and Ray J. Butcher. "2-[(E)-(Naphthalen-2-ylimino)methyl]-4-(trifluoromethoxy)phenol." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1024. http://dx.doi.org/10.1107/s1600536812009361.

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In the title compound, C18H12F3NO2, the planes of the benzene ring and the naphthalene system form a dihedral angle of 47.21 (3)°. The hydroxy group is involved in an intramolecular O—H...N hydrogen bond. In the crystal, weak C—H...O and C—H...F interactions link the molecules related by translations along thecandaaxes, respectively, into sheets.

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48

Bats, Jan W., Peter Schell, and Joachim W. Engels. "Biphenyl- and phenylnaphthalenyl-substituted 1H-imidazole-4,5-dicarbonitrile catalysts for the coupling reaction of nucleoside methyl phosphonamidites." Acta Crystallographica Section C Crystal Structure Communications 69, no. 5 (2013): 529–33. http://dx.doi.org/10.1107/s0108270113009293.

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Crystal structures are reported for three substituted 1H-imidazole-4,5-dicarbonitrile compounds used as catalysts for the coupling reaction of nucleoside methyl phosphonamidites, namely 2-(3′,5′-dimethylbiphenyl-2-yl)-1H-imidazole-4,5-dicarbonitrile, C19H14N4, (I), 2-(2′,4′,6′-trimethylbiphenyl-2-yl)-1H-imidazole-4,5-dicarbonitrile, C20H16N4, (II), and 2-[8-(3,5-dimethylphenyl)naphthalen-1-yl]-1H-imidazole-4,5-dicarbonitrile, C23H16N4, (III). The asymmetric unit of (I) contains two independent molecules with similar conformations. There is steric repulsion between the imidazole group and the t

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49

Brunner, Henri, and Josef Berghofer. "Enantioselektive Katalyse, 96 [1]. Naphthalin-Aufbauglieder in der Synthese von optisch aktiven Zweischalenphosphinen / Naphthalene Units in the Synthesis of Optically Active Two-Layer-Phosphines." Zeitschrift für Naturforschung B 50, no. 10 (1995): 1510–12. http://dx.doi.org/10.1515/znb-1995-1012.

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Two-layer phosphines were synthesized by reacting optically active bromonaphthyl derivatives with 1,2-bis(dichlorophosphino)ethane. The optically active bromonaphthyl ethers and amines were obtained from l-bromo-2,6-bis(bromomethyl)naphthalene and the optically active alcohol (-) borneol and the optically active amine (+)-N-methyl-3-aminomethylpinane.

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50

Nicolas-Gomez, Mariana, Diego Martínez-Otero, and Alejandro Dorazco-González. "Crystal structure ofN,N′-bis[(pyridin-4-yl)methyl]naphthalene diimide." Acta Crystallographica Section E Structure Reports Online 70, no. 9 (2014): o985—o986. http://dx.doi.org/10.1107/s1600536814017917.

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In the centrosymmetric title compound, C26H16N4O4{systematic name: 6,13-bis[(pyridin-4-yl)methyl]-6,13-diazatetracyclo[6.6.2.04,16011,15]hexadeca-1,3,8,10,15-pantaene-5,7,12,14-tetrone}, the central ring system is essentially planar [maximum deviation = 0.0234 (8) Å] and approximately perpendicular to the terminal pyridine ring [dihedral angle = 84.38 (3)°]. The molecules displays atransconformation with the (pyridin-4-yl)methyl groups on both sides of the central naphthalene diimide plane. In the crystal, molecules are linked by π–π stacking between parallel pyridine rings [centroid–centroid

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