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Journal articles on the topic '7-6 a.C'

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Published: 5 September 2021

Last updated: 29 July 2025

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1

Nassiopoulou, Androula, Leigh Canham, Michael Sailor, and Patrik Schmuki. "Preface: Phys. Status Solidi C 6/7." physica status solidi (c) 6, no. 7 (2009): 1530–32. http://dx.doi.org/10.1002/pssc.200960064.

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2

Toropov, Alexey, and Sergey Ivanov. "Preface: Phys. Status Solidi C 7/6." physica status solidi (c) 7, no. 6 (2010): 1453–55. http://dx.doi.org/10.1002/pssc.201060093.

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3

MOLINA, P., R. OBON, C. CONESA, et al. "ChemInform Abstract: Preparation of (5 + 6)-, (6 + 6)-, and (6 + 7)-Bicyclic Guanidines from C,C′-Bis(iminophosphoranes)." ChemInform 26, no. 6 (2010): no. http://dx.doi.org/10.1002/chin.199506162.

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4

Nutaitis, Charles F., and Kimberly Smith. "PREPARATION OF NOVEL QUINO[3, 4-C]-, QUENO[4, 3-C], QUINO[5, 6-C]-, QUINO[6, 5-C]-, AND QUINO[7, 8-C][2, 7]NAPHTHYRIDINE." Organic Preparations and Procedures International 39, no. 6 (2007): 611–15. http://dx.doi.org/10.1080/00304940709458646.

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5

Gruber, Dominik. "Groups with graphical $C(6)$ and $C(7)$ small cancellation presentations." Transactions of the American Mathematical Society 367, no. 3 (2014): 2051–78. http://dx.doi.org/10.1090/s0002-9947-2014-06198-9.

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6

Molina, Pedro, Rosario Obòn, Carlota Conesa, et al. "Preparation of [5 + 6]-, [6 + 6]-, and [6 + 7]-Bicyclic Guanidines fromC,C'-Bis(iminophosphoranes)." Chemische Berichte 127, no. 9 (1994): 1641–52. http://dx.doi.org/10.1002/cber.19941270916.

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7

Yuan, Haiqing, Craig R. Fairchild, Xian Liang, and David G. I. Kingston. "Synthesis and Biological Activity of C-6 and C-7 Modified Paclitaxels." Tetrahedron 56, no. 35 (2000): 6407–14. http://dx.doi.org/10.1016/s0040-4020(00)00611-6.

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8

Koutentis, Panayiotis A., Harry Krassos, and Daniele Lo Re. "1,3-Diphenylbenzo[e][1,2,4]triazin-7(1H)-one: Selected Chemistry at the C-6, C-7 and C-8 Positions." Organic & Biomolecular Chemistry 9, no. 14 (2011): 5228. http://dx.doi.org/10.1039/c1ob05410d.

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9

Wei, Ang Chee, Mohamed Ashraf Ali, Tan Soo Choon, Suhana Arshad, and Ibrahim Abdul Razak. "7′-Phenyl-1′,3′,5′,6′,7′,7a'-hexahydrodipiro[acenaphthylene-1,5′-pyrrolo[1,2-c]thiazole-6′,2′′-indane]-2,1′′(1H)-dione." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1265—o1266. http://dx.doi.org/10.1107/s1600536812013293.

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In the title compound, C31H23NO2S, the pyrrolidine ring adopts an envelope conformation (with the spiro C atom as the flap), while the thiazolidine ring and the two cyclopentane rings adopt twisted conformations. The mean plane through the hexahydropyrrolo[1,2-c]thiazole ring [r.m.s deviation = 0.400 (1) Å] forms dihedral angles of 76.83 (4), 80.70 (5) and 79.00 (4)° with the benzene ring and the mean planes of the dihydroacenaphthylene and the dihydroindene rings, respectively. In the crystal, molecules are linked by C—H...O hydrogen bonds into sheets lying parallel to thebcplane. One of the

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10

Zhang, Hui-Zhen, Qing-Xia Li, Ben-Tao Yin, and Cheng-He Zhou. "7-(6-Bromohexyloxy)-4-methyl-2H-chromen-2-one." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): o1709. http://dx.doi.org/10.1107/s1600536812020442.

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11

Youssef, Diaa, and August W. Frahm. "Circular dichroism of C-7, C-6 trans-fused guaianolides of Centaurea scoparia." Phytochemistry 41, no. 4 (1996): 1107–11. http://dx.doi.org/10.1016/0031-9422(95)00763-6.

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12

Pouilhès, Annie, Monica Duval-Lungulescu, Stéphanie Lambel, Stéphane Léonce, and Yves Langlois. "6′,7′-Dihydrokeramamine C and analogues: synthesis and biological evaluation." Tetrahedron Letters 42, no. 47 (2001): 8297–99. http://dx.doi.org/10.1016/s0040-4039(01)01774-9.

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13

Wei, Ang Chee, Mohamed Ashraf Ali, Tan Soo Choon, Ching Kheng Quah, and Hoong-Kun Fun. "7′-Phenyl-5′,6′,7′,7a′-tetrahydrodipiro[indan-2,5′-pyrrolo[1,2-c][1,3]thiazole-6′,2′′-indan]-1,3,1′′-trione." Acta Crystallographica Section E Structure Reports Online 67, no. 12 (2011): o3218—o3219. http://dx.doi.org/10.1107/s1600536811046174.

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14

Ishikawa, Yoshinobu. "6-Chloro-7-fluoro-4-oxo-4H-chromene-3-carbaldehyde." Acta Crystallographica Section E Structure Reports Online 70, no. 7 (2014): o825. http://dx.doi.org/10.1107/s1600536814014706.

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In the title compound, C10H4ClFO3, a chlorinated and fluorinated 3-formylchromone derivative, all atoms are essentially coplanar (r.m.s. = 0.0336 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.062 (2) Å] being for a benzene-ring C atom. In the crystal, molecules are linked through stacking interactions [centroid–centroid distance between the benzene and pyran rings = 3.958 (3) Å and interplanar distance = 3.259 (3) Å], C—H...O hydrogen bonds, and short C...O contacts [2.879 (3) Å]. Unsymmetrical halogen–halogen interactions between the Cl and F atoms [Cl...F

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15

Liu, Yu-min, Yong-qi Hu, Xiao-yun Li, and Wei Chen. "6-Benzoyl-7-phenyl-2,3-dihydro-1H-pyrrolizine." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (2007): o1106—o1107. http://dx.doi.org/10.1107/s1600536806056571.

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16

Kvaskoff, David, and Curt Wentrup. "Thioketenes and Iminopropadienethiones RN=C=C=C=S from Isoxazolones." Australian Journal of Chemistry 63, no. 12 (2010): 1694. http://dx.doi.org/10.1071/ch10340.

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Isoxazolones 6 undergo thermal elimination of propene and isopropylthiol to produce thioketenes 7 at 500–600°C under flash vacuum thermolysis conditions. At 700–900°C further fragmentation occurs to produce iminopropadienethiones, RNCCCS 8. In addition, 3-alkylisoxazolones 6d–e rearrange to cyanothioketenes 10d–e. Compounds 7, 8, and 10 were characterized by Ar matrix IR spectroscopy and comparison with density functional theory-calculated spectra. Thioketenes 7 reacted with amines to afford thioamides 11. Reaction of aryliminopropadienethiones 8 with amines caused cyclization to 2-aminoquinol

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17

Yuan, Haiqing, Craig R. Fairchild, Xian Liang, and David G. I. Kingston. "ChemInform Abstract: Synthesis and Biological Activity of C-6 and C-7 Modified Paclitaxels." ChemInform 31, no. 49 (2000): no. http://dx.doi.org/10.1002/chin.200049173.

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18

Jagadeesan, G., K. Sethusankar, R. Prasanna, and R. Raghunathan. "Ethyl 7′-(6-benzyloxy-2,2-dimethyltetrahydrofuro[3,2-d][1,3]dioxol-5-yl)-2-oxo-5′,6′,7′,7a'-tetrahydro-1′H,2H-spiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole]-6′-carboxylate." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2505—o2506. http://dx.doi.org/10.1107/s1600536812032291.

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In the title compound, C34H35NO7S, the acenaphthylene unit is essentially planar (r.m.s. deviation = 0.0335 Å). The pyrrolothiazole ring system is folded about the bridging N—C bond; the thiazolidine and pyrrolidine rings adopt S- and C-envelope conformations, respectively, with a `butterfly' angle between the mean planes of 51.38 (10)°. The dioxolane and tetrahydrofuran rings adopt O- and a C-envelope conformations, respectively, with a `butterfly' angle between the mean planes of 57.12 (10)°. Two C atoms are each disordered over two positions with site-occupancy factors of 0.450 (7) and 0.55

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19

P., BHATTACHARYYA, S. JASH S., and K. DEY A. "6',7' -Epoxyauraptene-A Coumarin from Aegle marmelos." Journal Of Indian Chemical Society Vol. 66, Jun 1989 (1989): 424–25. https://doi.org/10.5281/zenodo.6161065.

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Department of Chemistry, Bose Institute, 93/1, A. P. C. Road, Calcatta- 700 009 Department of Chemistry, Regional Research Institute (AY), Calcatta-'700 009 <em>Manuscript received  20 March 1989, accepted 21 April 1989</em> 6',7' -Epoxyauraptene-A Coumarin from <em>Aegle marmelos</em>  

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20

Hall, I. H., A. R. K. Murthy, and S. D. Wyrick. "Hypolipidemic Activity of 6-Substituted 6, 7-Dihydro-5H-dibenz[c,e]azepine and the effects of 6, 7-dihydro-5H-dibenz[c,e]azepine on Lipid Metabolism of Rodents." Journal of Pharmaceutical Sciences 75, no. 6 (1986): 622–26. http://dx.doi.org/10.1002/jps.2600750622.

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21

Wei, Ang Chee, Mohamed Ashraf Ali, Yeong Keng Yoon, Ching Kheng Quah, and Hoong-Kun Fun. "7′-(4-Bromophenyl)-5′,6′,7′,7a'-tetrahydrodispiro[indan-2,5′-pyrrolo[1,2-c][1,3]thiazole-6′,2′′-indan]-1,3,1′′-trione." Acta Crystallographica Section E Structure Reports Online 67, no. 12 (2011): o3274. http://dx.doi.org/10.1107/s1600536811046514.

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22

Nauš, Petr, Olga Caletková, Pavla Perlíková, et al. "Synthesis and biological profiling of 6- or 7-(het)aryl-7-deazapurine 4′-C-methylribonucleosides." Bioorganic & Medicinal Chemistry 23, no. 23 (2015): 7422–38. http://dx.doi.org/10.1016/j.bmc.2015.10.040.

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23

Chandrasekhar, S., and Ch Raji Reddy. "Towards a synthesis of epothilone A: asymmetric synthesis of C(1)C(6) and C(7)C(15) fragments." Tetrahedron: Asymmetry 13, no. 3 (2002): 261–68. http://dx.doi.org/10.1016/s0957-4166(02)00095-2.

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24

MALI, R. S., and A. P. MASSEY. "ChemInform Abstract: Synthesis of 6-Allylcoumarins Unoxygenated at C-7 Position." ChemInform 26, no. 44 (2010): no. http://dx.doi.org/10.1002/chin.199544144.

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25

Lang, Heinrich, та Laszlo Zsolnai. "Zur Umsetzung von Tri(phenylethinyl)arsan und -stiban mit Octacarbonyldicobalt; Kristallstruktur von (Ph– C≡ C)As[(η2-C≡ C – Ph)Co2(CO)6]2 / Reaction of Tri(phenylethynyl)arsane and -stibane with Octacarbonyldicobalt; Crystal Structure of (Ph–C≡C)As[η2-C≡C–Ph)Co2(CO)6]2". Zeitschrift für Naturforschung B 45, № 11 (1990): 1529–36. http://dx.doi.org/10.1515/znb-1990-1112.

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The synthesis of tri(phenylethynyl)arsane (1) and -stibane (7) is discussed. Octacarbonyldicobalt reacts selectively with 1 or 7 to yield the η2-side-on co-ordinated phenylethynyl complexes (Ph–C=C)nE[(η2-C≡C–Ph)Co2(CO)6]3-n (E = As: n = 2: 3, n = 1: 4, n = 0: 5; E = Sb: n = 2: 8; n = 1: 9; n = 0: 10), which contain sterically hindered carbon-cobalt tetrahedrane cluster units. 3 gives upon heating {(Ph–C≡C)2As[(η2-C=C–Ph)Co2(CO)5]}2 (6) a compound containing a six-membered Co2As2C2 ring.All new compounds have been characterized by analytical and spectroscopic data (IR, 1H, 13C NMR), and (Ph –C

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26

James, Vivienne L. A., Paul R. Lambden, Yu Deng, E. Owen Caul, and Ian N. Clarke. "Molecular characterization of human group C rotavirus genes 6, 7 and 9." Journal of General Virology 80, no. 12 (1999): 3181–87. http://dx.doi.org/10.1099/0022-1317-80-12-3181.

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Genes 6, 7 and 9 of human group C rotavirus ‘Bristol’ strain, encoding non-structural proteins (NSP) 3, 1 and 2, respectively, were cloned and sequenced. Human group C rotavirus genome segment 6 is 1350 bp and contains a single ORF of 1231 nucleotides (encoding 402 amino acids). Genome segment 7 is 1270 bp and encodes a protein of 394 amino acids and genome segment 9 is 1037 bp and encodes a 312 amino acid protein. The human group C rotavirus genes 6, 7 and 9 showed 78, 67 and 88% sequence identity, respectively, to the corresponding porcine group C rotavirus genes. The derived protein sequenc

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27

Huang, Yi-gang, Liang Chen, Yu-dong Gu, and Guang-rong Yu. "Undeveloped semiconic posterosuperior ligament and susceptibility to avulsion of the C-7 spinal nerve in Erb palsy." Journal of Neurosurgery: Pediatrics 7, no. 6 (2011): 676–80. http://dx.doi.org/10.3171/2011.3.peds1159.

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Object In Erb palsy, the C-7 spinal nerve has been found to be more subject to avulsion than the C-5 and C-6 spinal nerves. This study investigated the morphological and biomechanical characteristics of the semiconic posterosuperior ligaments (SPLs) at the C-5, C-6, and C-7 spinal nerves in neonates. Methods Twenty-four brachial plexuses from 12 fresh neonate cadavers were used in this study. In 12 brachial plexuses from 6 cadavers, the following studies were performed with respect to the SPLs at the C-5, C-6, and C-7 spinal nerves: gross observation of morphological and histological character

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28

Bender, Christopher Owen, Douglas Dolman, Jeremy Christian Foesier, Sherry Lee Lawson, and Kathryn Elvia Preuss. "The differing mechanisms of photo-formation of 7-cyanobenzocyclooctatetraene from 7- and 6-cyano-2,3-benzobicyclo[4.2.0]octa-2,4,7-triene." Canadian Journal of Chemistry 81, no. 1 (2003): 37–44. http://dx.doi.org/10.1139/v02-204.

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It is known that 7-cyanobenzocyclooctatetraene (COT 2) is a product of the thermolysis and direct photolysis of 7- and 6-cyano-2,3-benzobicyclo[4.2.0]octa-2,4,7-triene (1 and 5), though the mechanisms of these rearrangements have not been reported. In the present study experiments have been carried out using the deuterium-labelled trienes 1a (93%-d1 at C-6) and 5a (93%-d1 at C-8), which were formed from 2π + 2π photo-closure (direct irradiation) of COT 2a labelled at C-8. The results reveal that whereas the thermolysis of 1a and 5a and the direct irradiation of 5a reform COT 2a, probably via c

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29

Horňák, Mirko. "The achromatic number of K_{6} □ K_{7} is 18." Opuscula Mathematica 41, no. 2 (2021): 163–85. http://dx.doi.org/10.7494/opmath.2021.41.2.163.

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A vertex colouring \(f:V(G)\to C\) of a graph \(G\) is complete if for any two distinct colours \(c_1, c_2 \in C\) there is an edge \(\{v_1,v_2\}\in E(G)\) such that \(f(v_i)=c_i\), \(i=1,2\). The achromatic number of \(G\) is the maximum number \(\text{achr}(G)\) of colours in a proper complete vertex colouring of \(G\). In the paper it is proved that \(\text{achr}(K_6 \square K_7)=18\). This result finalises the determination of \(\text{achr}(K_6 \square K_q)\).

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30

Wei, Ang Chee, Mohamed Ashraf Ali, Rusli Ismail, Ching Kheng Quah, and Hoong-Kun Fun. "7′-[4-(Trifluoromethyl)phenyl]-5′,6′,7′,7a'-tetrahydrodispiro[indan-2,5′-pyrrolo[1,2-c][1,3]thiazole-6′,2′′-indan]-1,3,1′′-trione." Acta Crystallographica Section E Structure Reports Online 67, no. 12 (2011): o3293—o3294. http://dx.doi.org/10.1107/s1600536811047118.

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31

Rashid, Mohammad A., James A. Armstrong, Alexander I. Gray, and Peter G. Waterman. "Novel C-Geranyl 7-Hydroxycoumarins from the Aerial Parts of Eriostemon tomentellus." Zeitschrift für Naturforschung B 47, no. 2 (1992): 284–87. http://dx.doi.org/10.1515/znb-1992-0221.

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From the aerial parts of Eriostemon tomentellus five coumarins have been isolated. These have been characterized as ostruthin (6-geranyl-7-hydroxycoumarin (1)) and the novel compounds, 8-geranyl-7-hydroxycoumarin (2), (E)-6-(7-hydroxy-3,7-dimethylocta-2,5-dienyl)- 7-hydroxycoumarin (3), (E)-6-(7-hydroperoxy-3,7-dimethylocta-2,5-dienyl)-7-hydroxycoumarin (4), and 6-(6-hydroxy-3,7-dimethylocta-2,7-dienyl)-7-hydroxycoumarin (5). In addition tembamide (2-{4-methoxyphenyl}-2-hydroxy-N-benzoylethylamine (6 ) was isolated and the l3C NMR spectrum reported for the first time.

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32

Bercean, Vasile-Nicolae, Valentin Badea, Călin Deleanu, and Alina Nicolescu. "New 1H-1-alkyl-6-methyl-3-phenyl-7-phenylazo-pyrazolo[5,1-c][1,2,4]triazoles through regioselective alkylation of 1H-6-methyl-3-phenyl-7-phenylazopyrazolo[5,1-c][1,2,4]triazoles." Open Chemistry 10, no. 2 (2012): 373–79. http://dx.doi.org/10.2478/s11532-011-0151-2.

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Abstract1H-1-Alkyl-6-methyl-3-phenyl-7-phenylazopyrazolo[5,1-c][1,2,4]triazoles (2aa-ad) were obtained by regioselective alkylation of 1H-6-methyl-3-phenyl-7-phenylazopyrazolo[5,1-c][1,2,4]triazoles (2a). 1H-1-Alkyl-6-methyl-3-phenyl-7-phenylazopyrazolo[5,1-c][1,2,4]triazoles 2aa and 2ab were also prepared by coupling phenyldiazonium chloride with 1H-1-alkyl-6-methyl-3-phenyl-pyrazolo[5,1-c][1,2,4]triazoles 1aa and 1ab. The new compounds were characterized by IR, UV-VIS, 1H-NMR, 13C-NMR, and 15N-NMR spectroscopy and their structures and actual tautomeric forms were established unequivocally.

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33

Akula, Murthy R., and George W. Kabalka. "A Facile Synthesis of 6-Alkyl-6, 7-dihydro-5H-dibenz[c,e]azepines: Potent Hypolipidemics." Synthetic Communications 25, no. 23 (1995): 3901–6. http://dx.doi.org/10.1080/00397919508011465.

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34

Cairns, Francis. "C. Asinius Pollio and theEclogues." Cambridge Classical Journal 54 (2008): 49–79. http://dx.doi.org/10.1017/s1750270500000579.

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1. The addressees/honorands of the EcloguesTheEcloguesare universally regarded as a highly structured literary artefact, and some scholars believe that Virgil'ssumma manusmodified the contents of individual poems at the book's final stage to achieve balance and symmetry. Whether or not such modification took place, the pattern of addressees/honorands in the collection – where they exist – ought to have some significance. The following table sets them out:1.deus(7) =iuuenem(42), usually identified as Octavian2.None3.C. Asinius Pollio (84–9)4.C. Asinius Pollio (esp. 11–14)5.None6.P. Alfenus Varu

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Courtin, J. M. L., G. K. 'T Lam, A. J. M. Peters, and J. Lugtenburg. "Synthesis of 5-, 6-, 7- and 18-mono-13 C-labelled retinals." Recueil des Travaux Chimiques des Pays-Bas 104, no. 11 (1985): 281–88. http://dx.doi.org/10.1002/recl.19851041103.

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36

Fell, Stephen C. M., Michael J. Pearson, George Burton, and John S. Elder. "Synthesis and biological activity of new C-6 and C-7 substituted vinyloxyimino-penicillins and -cephalosporins." Journal of the Chemical Society, Perkin Transactions 1, no. 12 (1995): 1483. http://dx.doi.org/10.1039/p19950001483.

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37

Azéma, Joëlle, Brigitte Guidetti, Alexander Korolyov, et al. "Synthesis of lipophilic dimeric C-7/C-7-linked ciprofloxacin and C-6/C-6-linked levofloxacin derivatives. Versatile in vitro biological evaluations of monomeric and dimeric fluoroquinolone derivatives as potential antitumor, antibacterial or antimycobacterial agents." European Journal of Medicinal Chemistry 46, no. 12 (2011): 6025–38. http://dx.doi.org/10.1016/j.ejmech.2011.10.014.

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38

Wei, Ang Chee, Mohamed Ashraf Ali, Tan Soo Choon, Ibrahim Abdul Razak, and Suhana Arshad. "7′-(2,5-Dimethoxyphenyl)-1′,3′,5′,6′,7′,7a'-hexahydrodispiro[indan-2,5′-pyrrolo[1,2-c][1,3]thiazole-6′,2′′-indan]-1,3,1′′-trione." Acta Crystallographica Section E Structure Reports Online 68, no. 3 (2012): o560—o561. http://dx.doi.org/10.1107/s1600536812003169.

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39

El-Desouky, Samy K., Lamyaa F. Ibrahim, Salwa A. Kawashty, et al. "Phytochemical Constituents and Biological Activities of Origanum syriacum." Zeitschrift für Naturforschung B 64, no. 4 (2009): 447–51. http://dx.doi.org/10.1515/znb-2009-0416.

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The cytotoxicity of the methanol extract of Origanum syriacum against human cerivical adenocarcinoma, Hela cells, was evaluated by the MTT assay. From the crude extract, a new flavone glycoside, acacetin-7-O-[2´´-O-α-L-rhamnopyranosyl-6´´-O-β -D-glucopyranosyl]-β -D-glucopyranoside (1), together with the ten known flavonoids luteolin (2), apigenin (3), luteolin-6-C-glucoside (4), luteolin-3´-methylether-6-C-glucoside (5), luteolin-7,4´-dimethyether-6-C-glucoside (6), apigenin-7- methylether-6-C-glucoside (7), apigenin-7-O-glucoside (8), diosmetin-7-O-glucoside (9), acacetin- 7-O-glucoside (10)

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40

Jones, Peter G., Piotr Kuś та Ina Dix. "X-Ray Structure Determinations of Bromo- and/or Bromomethylsubstituted Benzenes: C–H···Br, C–Br···Br, and C–Br···π Interactions". Zeitschrift für Naturforschung B 67, № 12 (2012): 1273–81. http://dx.doi.org/10.5560/znb.2012-0249.

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The structures of seven benzene derivatives [1,2,3-tri(bromomethyl)benzene, (1); 3,5- di(bromomethyl)bromobenzene, (2); 2,5-di(bromomethyl)bromobenzene, (3); 4-(bromomethyl)-2,5- dibromotoluene, (4); 4-(bromomethyl)bromobenzene, (5); 2,3-di(bromomethyl)bromobenzene, (6) and (bromomethyl)-p-dibromobenzene, (7)] with bromo and bromomethyl (and in one case methyl) substituents are presented and analysed in terms of Br···Br interactions up to 4.0 A° , supported by hydrogen bonds H···Br. Some interactions of the type Br···π and π···π are encountered and play a subordinate role in the packing. Despi

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41

Banerjee, Sonbidya, Sundaravel Vivek Kumar, and Tharmalingam Punniyamurthy. "Site-Selective Rh-Catalyzed C-7 and C-6 Dual C–H Functionalization of Indolines: Synthesis of Functionalized Pyrrolocarbazoles." Journal of Organic Chemistry 85, no. 4 (2020): 2793–805. http://dx.doi.org/10.1021/acs.joc.9b03180.

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42

Brown, RFC, KJ Coulston, FW Eastwood, and MJ Irvine. "Synthesis of Dimethylbutatrienone, (CH3)2C=C=C=C=O, by a Rearrangement-Fragmentation Process and by Direct Elimination." Australian Journal of Chemistry 44, no. 1 (1991): 87. http://dx.doi.org/10.1071/ch9910087.

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4-Methylpenta-1,2,3-trien-1-one ( dimethylbutatrienone , Me2C=C=C=C=O) was generated by flash vacuum pyrolysis of precursors derived from 4,4-dimethyl-2-oxotetrahydrofuran-3-ylideneacetic acid (6) and from 4-methylpenta-2,3-dienoic acid (14). Pyrolysis of the mixed trifluoroacetic anhydride and of the acid chloride of (6) and, in poorer yield, of (14) gave 4-methylpenta-1,2,3-trien-1-one which was detected by argon matrix infrared spectroscopy (Vmax 2224, 2216 cm-1) and by reaction with methanol to form methyl 4-methylpenta-2,3-dienoate. The fragmentation pathway for the derivatives of (6) was

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43

Fenske, Dieter, Johannes Ohmer, and Kurt Merzweiler. "Darstellung und Kristallstrukturen von [Co6Se8(PPh3)6]+[CoCl3(THF)]- , [Co8Se8(PPh3)6][Co6Se8(PPh3)6] und [Co8Se8(PPh3)6]+[CoCl3(PPh3)]-." Zeitschrift für Naturforschung B 42, no. 7 (1987): 803–9. http://dx.doi.org/10.1515/znb-1987-0701.

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(NBu4)[CoCl3(PPh3)] reacts with Se(SiMe3)2 to form the new clusters [Co8Se8(PPh3)6][CoCl3(PPh3)] (6) and [Co8Se8(PPh3)6][Co6Se8(PPh3)6] (7). The structures of 6 and 7 have been determ ined by X-ray diffraction. 6 and 7 crystallize in the space group P1̄ with two formula units per unit cell and with the following lattice constants at 180 K: 6: a = 1413.8(10), b - 2224.2(23), c = 2348.4(17) pm, α = 86.06(5), β = 86.58(5), γ = 76.11(5)°; 7: a = 1465.9(4), b = 1627.6(6), c = 2505.7(6) pm, α - 98.69(2), β = 96.23(2), γ = 113.06(2)°. The cluster structures of the [Co8Se8(PPh3)6]n (n = 0, 1 +) depend

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44

Panda, Niranjan, Irshad Mattan, Subhadra Ojha, and Chandra Shekhar Purohit. "Correction: Synthesis of medium-sized (6–7–6) ring compounds by iron-catalyzed C–H activation/annulation." Organic & Biomolecular Chemistry 17, no. 10 (2019): 2824. http://dx.doi.org/10.1039/c9ob90026h.

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45

Ishikawa, Yoshinobu. "Crystal structure of 6-bromo-7-fluoro-4-oxo-4H-chromene-3-carbaldehyde." Acta Crystallographica Section E Crystallographic Communications 71, no. 7 (2015): 857–60. http://dx.doi.org/10.1107/s2056989015011871.

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In the title compound, C10H4BrFO3, a brominated and fluorinated 3-formylchromone derivative, all atoms are essentially coplanar (r.m.s. deviation of 0.025 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.050 (6) Å] being for a benzene-ring C atom. In the crystal, molecules are linked through stacking interactions [centroid–centroid distance between the benzene and pyran rings = 3.912 (4) Å], C—H...O hydrogen bonds and short C...O contacts [2.865 (7) Å]. Unsymmetrical halogen...halogen interactions between the bromine and fluorine atoms [Br...F = 3.116 (4) Å, C

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46

Suresh, J., R. Vishnupriya, S. Sivakumar, R. Ranjith Kumar, and S. Athimoolam. "Intermolecular C—H...O and C—H...Xinteractions in substituted spiroacenaphthylene structures." Acta Crystallographica Section C Crystal Structure Communications 68, no. 7 (2012): o257—o261. http://dx.doi.org/10.1107/s0108270112024584.

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In the three spiroacenaphthylene structures 5′′-[(E)-2,3-dichlorobenzylidene]-7′-(2,3-dichlorophenyl)-1′′-methyldispiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole-6′,3′′-piperidine]-2,4′′-dione, C35H26Cl4N2O2S, (I), 5′′-[(E)-4-fluorobenzylidene]-7′-(4-fluorophenyl)-1′′-methyldispiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole-6′,3′′-piperidine]-2,4′′-dione, C35H28F2N2O2S, (II), and 5′′-[(E)-4-bromobenzylidene]-7′-(4-bromophenyl)-1′′-methyldispiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole-6′,3′′-piperidine]-2,4′′-dione, C35H28Br2N2O2S, (III), the substituted aryl groups are 2,3-d

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47

Chu, Hong-Biao, Ning-Hua Tan, and Yu-Mei Zhanga. "Chemical Constituents from Pedicularis rex C. B. Clarke." Zeitschrift für Naturforschung B 62, no. 11 (2007): 1465–70. http://dx.doi.org/10.1515/znb-2007-1117.

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One new ionone glycoside, pedicurexoside (1), one new flavonoid, 5, 4′-dihydroxy-3′-methoxyflavone- 7-O-6″-n-butyryl-β -D-glucopyranoside (2), two new iridoid glycosides, 6-O-ethyl-aucubin (7), 6-O-ethyl-epiaucubin (8), and one new phenylpropanoid glycoside, 4-hydroxy-phenylpropenyl- α-L-rhamnopyranosyl-(1→3)-4-O- feruloyl-β -D-glucopyranoside (13), together with eleven known compounds, apigenin (3), luteolin (4), chrysoeriol (5), luteolin-7-O-β -D-glucopyranoside (6), aucubin (9), yuheinoside (10), euphroside (11), mussaenoside (12), verbascoside (14), martynoside (15) and isomartynoside (16)

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48

Panda, Niranjan, Irshad Mattan, Subhadra Ojha, and Chandra Shekhar Purohit. "Synthesis of medium-sized (6–7–6) ring compounds by iron-catalyzed dehydrogenative C–H activation/annulation." Organic & Biomolecular Chemistry 16, no. 42 (2018): 7861–70. http://dx.doi.org/10.1039/c8ob01496e.

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49

Zhang, Xinjun, Fuhang Song, Jiahui Han, Long Wang, Linlin Ma, and Xiuli Xu. "Asperinsuterpenes A–C from the Fungus Aspergillus insuetus BTBU20220155." Journal of Fungi 10, no. 9 (2024): 611. http://dx.doi.org/10.3390/jof10090611.

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Three new meroterpenoids, asperinsuterpenes A–C (1–3), and eight previously reported natural products, namely asnovolin I (4), (2′E,4′E,6′E)-6-(1′-carboxyocta-2′,4′,6′-triene)-9-hydroxydrim-7-ene-11,12-olide (5), (2′E,4′E,6′E)-6-(1′-carboxyocta-2′,4′,6′-triene)-11,12-epoxy-9,11-dihydroxydrim-7-ene (6), cinereain (7), carnequinazolines A and B (8 and 9), carnemycin B (10), and stromemycin (11) were isolated from the fungus Aspergillus insuetus, strain BTBU20220155. The structures of the compounds were determined based on spectroscopic techniques, including 1D and 2D NMR, HRESIMS, and ECD experi

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50

Abbassi, Najat, Bassou Oulemda, El Mostapha Rakib, Detlef Geffken, and Hafid Zouihri. "Ethyl 3-[7-ethoxy-6-(4-methoxybenzenesulfonamido)-2H-indazol-2-yl]propanoate." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o931. http://dx.doi.org/10.1107/s1600536812007519.

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In the title compound, C21H25N3O6S, the dihedral angle between the methoxybenzene and indazole rings is 74.96 (5)°. The crystal packing is stabilized by an N—H...O hydrogen bond into a two-dimensional network. In addition, C—H...π interactions and a π–π contact, with a centroid–centroid distance of 3.5333 (6) Å, are observed. The crystal packing is stabilized by N—H...O and C—H...O hydrogen bonds.

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