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Journal articles on the topic '2-hydroxy-6'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Wallet, J. C., E. M. Gaydou, M. Mas, E. Molins, and C. Miravitlles. "2-(2,3-Dimethoxyphenyl)-6-hydroxy-4H-1-benzopyran-4-one (6-hydroxy-2',3'-dimethoxyflavone)." Acta Crystallographica Section C Crystal Structure Communications 49, no. 11 (1993): 2030–32. http://dx.doi.org/10.1107/s0108270193005177.

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2

Shu, Ren-Geng, Hai-Liang Zhu, and Ren-Xiang Tan. "Methyl 5-hydroxy-2-(2-hydroxy-6-methoxy-4-methylbenzoyl)-3-methoxybenzoate." Acta Crystallographica Section E Structure Reports Online 61, no. 1 (2004): o189—o191. http://dx.doi.org/10.1107/s160053680403346x.

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3

Goswami, Shailesh K., Lyall R. Hanton, C. John McAdam, Stephen C. Moratti, and Jim Simpson. "6-Hydroxy-5,7,8-trimethylchroman-2-one." Acta Crystallographica Section E Structure Reports Online 67, no. 7 (2011): o1566—o1567. http://dx.doi.org/10.1107/s1600536811019982.

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4

Wafo, Pascal, Hidayat Hussain, Simeon F. Kouam, Bonaventure T. Ngadjui, Ulrich Flörke, and Karsten Krohn. "2′-Hydroxy-4,4′,5′,6′-tetramethoxychalcone." Acta Crystallographica Section E Structure Reports Online 61, no. 9 (2005): o3017—o3019. http://dx.doi.org/10.1107/s1600536805026292.

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5

Singh, Govind Pratap, N. Rajesh Goud, P. Jeevan Kumar, C. N. Sundaresan, and G. Nageswara Rao. "2-Bromo-3-hydroxy-6-methylpyridine." Acta Crystallographica Section E Structure Reports Online 69, no. 12 (2013): o1729. http://dx.doi.org/10.1107/s1600536813029498.

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In the title compound, C6H6BrNO, the Br atom is displaced from the pyridine ring mean plane by 0.0948 (3) Å, while the hydroxyl O atom and the methyl C atom are displaced by 0.0173 (19) and 0.015 (3) Å, respectively. In the crystal, molecules are linkedviaO—H...N hydrogen bonds, forming chains propagating along thea-axis direction. These chains are linked by C—H...Br hydrogen bonds, forming corrugated two-dimensional networks lying parallel to theacplane.

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6

Goswami, Shailesh K., Lyall R. Hanton, C. John McAdam, Stephen C. Moratti, and Jim Simpson. "6-Hydroxy-7,8-dimethylchroman-2-one." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2332—o2333. http://dx.doi.org/10.1107/s1600536812029704.

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The title compound, C11H12O3, is essentially planar, with an r.m.s. deviation of 0.179 Å from the mean plane through the 14 non-H atoms in the molecule. The benzene ring and the pyranone mean plane are inclined at 13.12 (6)° to one another and the pyranone ring adopts a flattened chair conformation. In the crystal, O—H...O hydrogen bonds and C—H...O contacts formR12(6) rings and link molecules into chains alongb. Additional C—H...O contacts generate inversion dimers, withR22(8) ring motifs, and form sheets parallel to (-102) which are linked by C—H...π interactions.

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7

Feng, Hai-Mei, Xin Wang, and Ke-Wei Lei. "The cocrystal 2-hydroxy-4-methyl-N-propanoylbenzohydrazide–2-hydroxy-N-(2-hydroxy-4-methylbenzoyl)-6-methylbenzohydrazide (2/1)." Acta Crystallographica Section E Structure Reports Online 64, no. 11 (2008): o2144. http://dx.doi.org/10.1107/s1600536808033515.

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8

Gordon, JLM, MP Hartshorn, WT Robinson, et al. "The Reactions of Some Substituted 2-Hydroxybenzonitriles With Nitrogen Dioxide: X-Ray Structures of 2-Cyano-t-6-hydroxy-3,4,5,6-tetramethyl-r-4,t-5-dinitrocyclohex- 2-enone, 2-Cyano-3,4,5,6-tetramethyl-r-4,t-5,t-6-trinitrocyclohex-2-enone and 2-Cyano-c-6-h-4,6-dimethyl-r-4,c-5-dinitrocyclohex-2-enone." Australian Journal of Chemistry 43, no. 3 (1990): 579. http://dx.doi.org/10.1071/ch9900579.

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Reaction of 2-hydroxy-3,4,5,6-tetramethylbenzonitrile (1c) with nitrogen dioxide gives predominantly the 4,5,6-trinitrocyclohex-2-enones (9) and (10a,b), with lower yields of the 4-nitro dienone (5a) and the 6-hydroxy-4,5-dinitrocyclohex-2-enone (6). Reaction of 2-hydroxy-3,5-dimethylbenzonitrile (2b) with nitrogen dioxide gave the C4-epimeric 6-hydroxy-4,5-dinitrocyclohex-2-enones (11) and (12). Reaction of 2-hydroxy-3,5,6-trimethyl- benzene-1,4-dicarbonitrile (4) with nitrogen dioxide gave the 4-hydroxy dienone (15) and the 6-hydroxy dienone (16). X-Ray structure determinations are reported

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9

Schnell, Barbara, and Thomas Kappe. "Sulfenylation of heterocyclic 1,3-dicarbonyl systems: 4-Hydroxy-2-pyrones, 6-hydroxy-4-pyrimidones, 4-hydroxy-2-pyridones, 4-hydroxy-6-pyridazinones, and 5-hydroxy-3-pyrazolones." Journal of Heterocyclic Chemistry 37, no. 4 (2000): 911–19. http://dx.doi.org/10.1002/jhet.5570370439.

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10

Schnell, Barbara, and Thomas Kappe. "ChemInform Abstract: Sulfenylation of Heterocyclic 1,3-Dicarbonyl Systems: 4-Hydroxy-2-pyrones, 6-Hydroxy-4-pyrimidones, 4-Hydroxy-2-pyridones, 4-Hydroxy-6-pyridazinones, and 5-Hydroxy-3-pyrazolones." ChemInform 32, no. 2 (2001): no. http://dx.doi.org/10.1002/chin.200102063.

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11

Shuja, Shaukat, Saqib Ali, Nasir Khalid, and Auke Meetsma. "2-Hydroxy-6-[(m-tolyliminio)methyl]phenolate." Acta Crystallographica Section E Structure Reports Online 63, no. 7 (2007): o3162—o3164. http://dx.doi.org/10.1107/s1600536807012561.

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12

Chinnakali, K., K. Sivakumar, S. Natarajan, M. N. Ponnuswamy, and E. W. Czerwinski. "3-(2-Hydroxy-5-methylbenzyl)-6-methylcoumarin." Acta Crystallographica Section C Crystal Structure Communications 47, no. 2 (1991): 330–32. http://dx.doi.org/10.1107/s0108270190003274.

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13

Yu, Hui-ling. "6-Hydroxy-3-(hydroxyimino)indolin-2-one." Acta Crystallographica Section E Structure Reports Online 65, no. 10 (2009): o2328. http://dx.doi.org/10.1107/s1600536809034321.

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14

Reyes, Héctor, Gerardo Aguirre, and Daniel Chávez. "4-Hydroxy-6-methylpyridin-2(1H)-one." Acta Crystallographica Section E Structure Reports Online 69, no. 10 (2013): o1534. http://dx.doi.org/10.1107/s1600536813024240.

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15

Do, Jun Ho, Kwang-Jin Hwang, Moon-Hwan Kim, and Chong-Hyeak Kim. "Methyl 6-dimethylamino-4-hydroxy-2-naphthoate." Acta Crystallographica Section E Structure Reports Online 67, no. 1 (2010): o230. http://dx.doi.org/10.1107/s1600536810053237.

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16

Mori, Matteo, Fiorella Meneghetti, Laurent R. Chiarelli, et al. "6-Hydroxy-2-methylbenzofuran-4-carboxylic Acid." Molbank 2020, no. 2 (2020): M1143. http://dx.doi.org/10.3390/m1143.

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6-Hydroxy-2-methylbenzofuran-4-carboxylic acid was synthesized in two steps, starting from 3,5-dihydroxybenzoate. The product was obtained through a direct thermal one-pot cyclization with propargyl bromide, followed by a base-catalyzed hydrolysis. Its molecular structure was elucidated by means of mono- and bidimensional NMR techniques, ESI-MS, FT-IR and single-crystal X-ray diffraction.

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17

Betz, Richard, Thomas Gerber, and Henk Schalekamp. "2-Hydroxy-6-isopropyl-3-methylbenzoic acid." Acta Crystallographica Section E Structure Reports Online 67, no. 5 (2011): o1063. http://dx.doi.org/10.1107/s1600536811011998.

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18

Mohamed, Shaaban Kamel, Peter N. Horton, Mehmet Akkurt, Mustafa R. Albayati, and Herman Potgeiter. "2-Hydroxy-N′-[2-(6-methoxynaphthalen-2-yl)propanoyl]benzohydrazide." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1251—o1252. http://dx.doi.org/10.1107/s1600536812012731.

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In the title compound, C21H20N2O4, the naphthalene ring system makes a dihedral angle of 84.5 (3)° with the benzene ring, and the –C(=O)–N(H)–N(H)–C(=O)– torsion angle is 70.7 (7)°, so that the molecule is twisted. AnS(6) ring motif is formedviaan intramolecular O—H...O hydrogen bond. In the crystal, molecules are linked by N—H...O and C–H...O hydrogen bonds into supramolecular layers in theabplane.

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19

Şahin, Onur, Orhan Büyükgüngör, Çiğdem Albayrak, and Mustafa Odabaşogˇlu. "2-Hydroxy-6-[(2-methoxyphenyl)aminomethylene]cyclohexa-2,4-dienone." Acta Crystallographica Section E Structure Reports Online 61, no. 6 (2005): o1579—o1581. http://dx.doi.org/10.1107/s160053680501319x.

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20

Koşar, Başak, Çiğdem Albayrak, Mustafa Odabaşoğlu, and Orhan Büyükgüngör. "2-Hydroxy-6-[(2-hydroxyphenylamino)methylene]cyclohexa-2,4-dienone." Acta Crystallographica Section E Structure Reports Online 61, no. 4 (2005): o1097—o1099. http://dx.doi.org/10.1107/s160053680500807x.

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21

Fun, Hoong-Kun, Kullapa Chanawanno, and Suchada Chantrapromma. "2-(2-Hydroxy-3-methoxyphenyl)-6H-perimidin-6-one." Acta Crystallographica Section E Structure Reports Online 67, no. 3 (2011): o715—o716. http://dx.doi.org/10.1107/s1600536811006465.

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22

Enk, Barbara, Benno Bildstein, and Klaus Wurst. "Crystal structure of 2-benzoyl-6-hydroxy-6-phenylpentafulvene, C19H14O2." Zeitschrift für Kristallographie - New Crystal Structures 224, no. 4 (2009): 544–46. http://dx.doi.org/10.1524/ncrs.2009.0237.

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23

Shit, Ranjt Kumar, and Nitai Chand Sinha. "High degree of regioselectivity during the synthesis of new allylcoumarins employing thermal Claisen rearrangement." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 03 (2024): 431. http://dx.doi.org/10.59467/ijhc.2024.34.431.

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Allyloxycoumarins (3,4) and ethyl 2-allyloxycinnamates (27, 28) were converted into 7-hydroxy-8- allylcoumarins (5,6), 2-hydroxy-3-allyl-4-methoxy-E-cinnamate ester (29), and 2-hydroxy-3-acetyl-4-methoxy-5-allyl cinnamate ester (30) by thermal Claisen rearrangement. The compounds 7-hydroxy-8-allylcoumarins (5,6) and 2-hydroxy-3- allyl cinnamate (30) on acylation or benzoylation, followed by Fries rearrangement gave 6-acetyl-7-hydroxy-8-allylcoumarins (15-20), 6-benzoyl-7-hydroxy-8-allylcoumarins (21,22), and 2-hydroxy-3-allyl-4-methoxy-5-acetylcoumarin (31). The compounds (33) and (30) underwe

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24

Elix, JA, JA Elix, DA Venables, DA Venables, M. Wedin, and M. Wedin. "New Dibenzofurans and Depsides From the Lichen Bunodophoron patagonicum." Australian Journal of Chemistry 47, no. 7 (1994): 1335. http://dx.doi.org/10.1071/ch9941335.

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The lichen Bunodophoron patagonicum has been shown to contain five new dibenzo -furans: ascomatic acid (3,7-dimethoxy-1,9-dimethyldibenzofuran-2-carboxylic acid) (2) and the corresponding methyl ester (3); 7-O-methylnorascomatic acid (3-hydroxy-7-methoxy-1,9-dimethyldibenzofuran-2-carboxylic acid) (4) and the corresponding methyl ester (5); and norascomatic acid (3,7-dihydroxy-1,9-dimethyldibenzofuran-2-carboxylic acid) (6). The lichen also contains two new depsides : patagonic acid [2-hydroxy-4-(2′-hydroxy-4′-methoxy-6′-methyl-benzoyloxy)-6-(2′-oxononyl)benzoic acid] (10) and isopatagonic aci

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25

Rahayu, Maya, Susi Kusumaningrum, and Hayun Hayun. "5-(6-Hydroxy-6-methyl-5-oxoheptan-2-yl)-2-methyl Phenyl Acetate." Molbank 2019, no. 1 (2018): M1041. http://dx.doi.org/10.3390/m1041.

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We synthesized a novel compound, 5-(6-hydroxy-6-methyl-5-oxoheptan-2-yl)-2-methylphenyl acetate, in a good yield by oxidation of 1-O-acetyl-xanthorrizol using potassium permanganate in acidic condition. The structure was elucidated by Fourier Transform Infrared (FTIR), 1H-Nuclear Magnetic Resonance (NMR) and 13C-NMR, two-dimensional (2D)-HSQC, Distortionless Enhancement by Polarization Transfer (DEPT), 2D-Heteronuclear Multiple Bond Correlation (HMBC), and High-Resolution Mass Spectra (HRMS) spectral data.

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26

Fun, Hoong-Kun, Samuel Robinson Jebas, Subrata Jana, Rinku Chakrabarty, and Shyamaprasad Goswami. "2-(7-Hydroxy-2-naphthyloxy)-N-(6-methyl-2-pyridyl)acetamide." Acta Crystallographica Section E Structure Reports Online 64, no. 4 (2008): o699. http://dx.doi.org/10.1107/s1600536808006211.

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27

Javed, Ali Khan, He Xuexiang, S. Shah Noor, et al. "Kinetic and mechanism investigation on the photochemical degradation of atrazine with activated H2O2, S2O28- and HSO5-." Chemical Engineering Journal 252 (May 9, 2014): 393–403. https://doi.org/10.1016/j.cej.2014.04.104.

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Degradation of atrazine was investigated under UV-254 nm irradiation, alone or in combination with peroxides, i.e., hydrogen peroxide, persulfate (PS) or peroxymonosulfate (PMS). UV/PS was found to be the most efficient process in this study, which was probably due to its higher radical quantum yield under UV irradiation, considering atrazine’s comparable second order rate constant of 2.59 x 10<sup>9</sup> M<sup>-1</sup> s<sup>-1</sup> and 2.25 x 10<sup>9</sup> M<sup>-1</sup> s<sup>-1</sup> with sulfate radical and hydroxyl radical, respectively. The pH values showed no significant effec

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28

Xing, Xiao-Ning, Liang Li, Xiao-Yu Zhu, and Jia-Rong Chen. "6-Chloro-3-hydroxy-3-(2-oxopropyl)indolin-2-one." Acta Crystallographica Section E Structure Reports Online 63, no. 6 (2007): o2969—o2970. http://dx.doi.org/10.1107/s1600536807020739.

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29

Anderson, Brian J., Christopher J. Kennedy, and Jerry P. Jasinski. "N-Ethyl-2-[1-(2-hydroxy-6-methoxyphenyl)ethylidene]hydrazinecarbothioamide." Acta Crystallographica Section E Structure Reports Online 68, no. 10 (2012): o2982. http://dx.doi.org/10.1107/s1600536812039323.

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30

Houssin, Raymond, Edith Bouey-Bencteux, Charles Dogimont, and Jean-Pierre Hénichart. "Nitration of 6-Hydroxy-1-methylpyridin-2-one." HETEROCYCLES 48, no. 12 (1998): 2643. http://dx.doi.org/10.3987/com-98-8304.

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31

Sepvianti, Wiwit, and Serafica Btari Christiyani Kusumaningrum. "Antibacterial Activity of 2 '-hydroxy-4', 6 'dimethoxychalcone." Journal of Health 6, no. 1 (2019): 37–39. http://dx.doi.org/10.30590/vol6-no1-p37-39.

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Kalkon merupakan senyawa flavanoid rantai terbuka yang memiliki beragam aktivitas farmakologis diantaranya sebagai antioksidan, antibakteri, antiinflamatori dan antikanker. Senyawa 2’-hidroksi-4’,6’-dimetoksikalkon telah dilaporkan memiliki aktivitas antikanker yang sangat baik dan bersifat selektif, yaitu hanya aktif mematikan sel kanker namun tidak mematikan sel normal. Aktivitas senyawa 2’-hidroksi-4’,6’-dimetoksikalkon yang baik terhadap sel kanker diharapkan juga bekerja pada bakteri. Penggunaan alkohol sebagai desinfektan pada proses aftap memberi resiko lisis darah, sehingga diperlukan

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32

Shoja, M., S. Bisso, R. Kabbani, and D. Athanasopoulos. "Crystal structure of 6-hydroxy-2'-methoxyflavone, C16H12O4." Zeitschrift für Kristallographie - New Crystal Structures 214, no. 2 (1999): 233–34. http://dx.doi.org/10.1515/ncrs-1999-0242.

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33

Doriguetto, A. C., C. A. Santos, D. S. Raslan, and N. G. Fernandes. "2-(N,N-Dimethylamino)-6-hydroxy-1,4-naphthoquinone." Acta Crystallographica Section C Crystal Structure Communications 55, no. 4 (1999): 639–42. http://dx.doi.org/10.1107/s0108270198013213.

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34

Yazıcı, Serap, Çiğdem Albayrak, İsmail Gümrükçüoğlu, İsmet Şenel, and Orhan Büyükgüngör. "(E)-2-Hydroxy-6-[(4-propylphenyl)iminiomethyl]phenolate." Acta Crystallographica Section E Structure Reports Online 66, no. 1 (2009): o93. http://dx.doi.org/10.1107/s1600536809052246.

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35

Beh, Hooi-Kheng, Zhari Ismail, Mohd Zaini Asmawi, Wan-Sin Loh, and Hoong-Kun Fun. "7-Hydroxy-6-methoxy-2H-chromen-2-one." Acta Crystallographica Section E Structure Reports Online 66, no. 8 (2010): o2138. http://dx.doi.org/10.1107/s1600536810029296.

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36

Zhi, Feng. "6-Chloro-N′-(2-hydroxy-1-naphthylmethylene)nicotinohydrazide." Acta Crystallographica Section E Structure Reports Online 64, no. 1 (2007): o150. http://dx.doi.org/10.1107/s1600536807063611.

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37

Arunakumar, D. B., G. Krishnaswamy, S. Sreenivasa, K. J. Pampa, N. K. Lokanath, and P. A. Suchetan. "2-(6-Hydroxy-1-benzofuran-3-yl)acetamide." Acta Crystallographica Section E Structure Reports Online 70, no. 1 (2013): o87. http://dx.doi.org/10.1107/s1600536813033436.

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38

Cameron, Scott A., Shailesh K. Goswami, Lyall R. Hanton, C. John McAdam, Stephen C. Moratti, and Jim Simpson. "5-Chloro-6-hydroxy-7,8-dimethylchroman-2-one." Acta Crystallographica Section E Structure Reports Online 67, no. 8 (2011): o2141—o2142. http://dx.doi.org/10.1107/s1600536811029345.

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39

Mani Naidu, S., M. Krishnaiah, and K. Sivakumar. "3-Hydroxy-6-methyl-2-pyridylmethyl Isopropylphosphonate Sesquihydrate." Acta Crystallographica Section C Crystal Structure Communications 52, no. 4 (1996): 1058–60. http://dx.doi.org/10.1107/s0108270195013850.

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40

Journal, Baghdad Science. "Synthesized azodyes of 2-amino-1, 3, 4- thiadiazole - 5 - thiol." Baghdad Science Journal 8, no. 2 (2011): 269–73. http://dx.doi.org/10.21123/bsj.8.2.269-273.

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Several azo dyes were synthesized through coupling reaetion of some substituted phenols and B.naphthol with diazonium salt of 2- amino-1,3-4- thiadiazol -5- thiol. All the synthesized compounds during this work were characterized using some speetral data (F.TIRand UV)andM.P . 2-[4 --Hydroxy napthyl-azo ] -1,3,4-Thiadiazol -5-Thiol • 2- [2-- hydroxy –4- NO2 – phenyl- azo]- 1,3,4 - Thiadiazol –5-Thiol. • 2- [3--Amino-4-Hydroxy phenyl –azo]-1,3,4 - Thiadiazol –5-Thiol. . • 2-[2--Amino-4-Hydroxy phenyl -azo]-1,3,4 - Thiadiazol –5-Thiol . • 2- [3--Amino-6- Hydroxy phenyl -azo]-1,3,4 - Thiadiazol –5

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41

Journal, Baghdad Science. "Synthesis & Characterization of Oxazinan and 5-oxa-7-aza-spiro[2,5] octane from reaction of Dibenzylidene with malonic anhydride and 5-oxa-spiro[2,3] hexane-4,6-dione." Baghdad Science Journal 4, no. 2 (2007): 276–84. http://dx.doi.org/10.21123/bsj.4.2.276-284.

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Di Benzylidenes were prepared by condensation of 1,2-diamino benzene with o- hydroxy benzaldehyde. These dibenzylidenes when treated with one equivalent of malonic anhydride or 5-oxo-spiro[2,3]hexane-4,6-dione in dry benzene give 6-membered heterocyclic ring system of 3-{2-[(2-Hydroxy-benzylidene)-amino]-phenyl}-2-(2-hydroxy –phenyl)-[1,3]oxazinane-4,6-diones ( 1-3) or 7-{2-[(2-hydroxy-benzylidene)-amino]-phenyl}-6-(2-hydroxy-phenyl)-5-oxa-7-aza-spiro[2.5]octane-4,8-diones ( 7- 9 ) But when two equivalents of malonic anhydride or 5-oxo-spiro[2,3]hexane-4,6-dione were used and under sam conditi

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42

CROSS, E. J. "Sodium 2-Hydroxy-3-carboxynaphthalene-6-sulphonate and 2:6-Dihydroxynaphthalene-3-carboxylic Acid." Journal of the Society of Dyers and Colourists 62, no. 5 (2008): 150–51. http://dx.doi.org/10.1111/j.1478-4408.1946.tb02406.x.

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43

Khilya, O. V., T. A. Volovnenko, A. V. Turov, R. I. Zubatyuk, O. V. Shishkin, and Yu M. Volovenko. "Synthesis of 2-(2-hetaryl)-6-hydroxy-3-(R-amino)-2-hexenenitriles." Chemistry of Heterocyclic Compounds 48, no. 12 (2013): 1770–80. http://dx.doi.org/10.1007/s10593-013-1208-2.

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44

Lu, Rong, Wenxia Wang, Xingqiang Lü, and Shunsheng Zhao. "2-{[2-(2-Hydroxy-3-methoxybenzylidene)hydrazin-1-ylidene]methyl}-6-methoxyphenol." Acta Crystallographica Section E Structure Reports Online 67, no. 10 (2011): o2702. http://dx.doi.org/10.1107/s1600536811036816.

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45

Kumar, Ajay, Om Prakash, Mayank Kinger, and Shiv P. Singh. "Synthesis of some new 1-aryl-4-formyl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)pyrazoles using the Vilsmeier–Haack reaction — Isolation of the key intermediate 1-aryl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)pyrazoles." Canadian Journal of Chemistry 84, no. 3 (2006): 438–42. http://dx.doi.org/10.1139/v06-015.

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Arylhydrazones of dehydroacetic acid (DHA) underwent Vilsmeier–Haack reaction to generate the corresponding 1-aryl-4-formyl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)pyrazoles (1) with the pyrone moiety of the DHA remaining intact. However, when the reaction was performed using 1 equiv. of the reagent, compounds of 1-aryl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)pyrazoles (2a–2f) were obtained, which underwent smooth conversion to 1-aryl-4-formyl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)pyrazoles (1) on further treatment with another equivalent of the Vilsmeier–Haack reagent. This unreported

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46

Amorim, Magali S., Alessandra F. Serain, Marcos José Salvador, and Maria Élida A. Stefanello. "Chemical Constituents of Sinningia hatschbachii." Natural Product Communications 12, no. 11 (2017): 1934578X1701201. http://dx.doi.org/10.1177/1934578x1701201128.

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A new naphthoquinone, 6-hydroxy-7-methoxy-2- O-methylduniol (1), was isolated from the tubers of Sinningia hatschbachii Chautems (Gesneriaceae), together with 10 known compounds: 7-hydroxy-α-dunnione, 7-hydroxy-6-methoxy-α-dunnione, 2,4,4’,6-tetramethoxydihydrochalcone, 4’-hydroxy-2,4,6-trimethoxydihydrochalcone, 4’,2-dihydroxy-4,6-dimethoxydihydrochalcone, methyl 1-hydroxy-4-methoxy-2-naphthoate, methyl 1,4-dimethoxy-2-naphthoate, methyl 4-hydroxybenzoate, calceolarioside B, and conandroside. All compounds were identified by spectroscopic techniques, and comparison with literature. Extracts i

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Kanevskaya, I. V., N. V. Pchelintseva та O. V. Fedotova. "Functionalization of 4-hydroxy-6-methyl-2Н-pyran-2-one under the conditions of the modified Biginelli reaction". Журнал органической химии 59, № 4 (2023): 466–74. http://dx.doi.org/10.31857/s0514749223040055.

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The features of the interaction of 4-hydroxy-6-methyl-2 H -pyran-2-one with aromatic aldehydes and urea in the one-pot mode of the classical mode, as well as using thermal and microwave activation of The Biginelli reaction variants, were studied. Depending on the conditions of single-reactory processes, previously unknown 3-[amino(aryl)methyl]-4-hydroxy-6-methyl-2 H -pyran-2-one, arylmethylenebis-4-hydroxy-6-methyl-2 H -pyran2-one, hybrid system - 2-hydroxy-7-methyl-4-(3-nitrophenyl)-4,4a-dihydro-5 H -pyrano[4,3- d ]pyrimidine-5-one in the case of transformation with aryl aldehyde containing a

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Vega, Araceli, Hugo Tlahuext та Herbert Höpfl. "{2-Hydroxy-6-[(2-oxidophenyl)iminomethyl-κ2N,O]phenolato-κO1}phenylboron". Acta Crystallographica Section E Structure Reports Online 66, № 4 (2010): o758. http://dx.doi.org/10.1107/s1600536810007609.

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Pažický, Marek, Vladislav Semak, Boris Gášpár, Adela Bílešová, Marta Sališová, and Andrej Boháč. "Efficient synthesis of 2-alkyl-2-hydroxy-6-X-1-tetralones." Arkivoc 2008, no. 8 (2008): 225–41. http://dx.doi.org/10.3998/ark.5550190.0009.818.

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Blackwell, N. L., F. R. Fronczek, and R. D. Gandour. "(2S,6R)-6-Carboxymethyl-2-ethyl-2-hydroxy-4,4-dimethylmorpholinium bromide." Acta Crystallographica Section C Crystal Structure Communications 45, no. 7 (1989): 1089–91. http://dx.doi.org/10.1107/s0108270188014659.

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