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Journal articles on the topic 'Cyclohexenone'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

El-Korso, Sanaa, Sumeya Bedrane, Abderrahim Choukchou-Braham, and Redouane Bachir. "The effect of redox properties of ceria-supported vanadium oxides in liquid phase cyclohexene oxidation." RSC Advances 5, no. 78 (2015): 63382–92. http://dx.doi.org/10.1039/c5ra11430f.

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In the presence of redox catalysts, cyclohexene oxidation leads to an epoxidation product, while in the presence of acidic features; the allylic oxidation is predominant and leads to cyclohexenol and cyclohexenone.

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2

S., Khare, та Shrivastava S. "Epoxidation of cyclohexene catalysed by MnII supported on α-titanium arsenate as catalyst and dry TBHP as an oxidant". Journal of Indian Chemical Society Vol. 83, Aug 2006 (2006): 813–18. https://doi.org/10.5281/zenodo.5827777.

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School of Chemical Sciences, Takshashila Campus, Khandwa Road, Devi Ahilya University, Indore-452 017, Madhya Pradesh, India <em>E-mail</em> : kharesavita@rediffmail.com <em>Manuscript received 5 August 2005, revised 10 May 2006. accepted 16 May 2006</em> Manganese supported on a-titanium arsenate {α-TiMn<sup>II</sup>As} was synthesized by ion-exchange method and characterized by DSC. Its catalytic activity is reported for cpoxidation of cyclohexene using dry tert-butylhydroperoxide (TBHP) as an oxidant.In the epoxidation reaction cyrlohexene was oxidized to cyclohexene oxide,cycloh

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3

Chen, Jingwen, Minda Chen, Biying Zhang, et al. "Allylic oxidation of olefins with a manganese-based metal–organic framework." Green Chemistry 21, no. 13 (2019): 3629–36. http://dx.doi.org/10.1039/c9gc01337g.

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4

Hylden, Anne T., Eric J. Uzelac, Zeljko Ostojic, et al. "Cyclization of 5-hexynoic acid to 3-alkoxy-2-cyclohexenones." Beilstein Journal of Organic Chemistry 7 (September 23, 2011): 1323–26. http://dx.doi.org/10.3762/bjoc.7.155.

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The one-pot cyclization of 5-hexynoic acid to produce 3-alkoxy-2-cyclohexenones proceeds in good yields (58–90%). 3-Hexynoic acid was converted to its acyl chloride with the aid of oxalyl chloride and was cyclized to 3-chloro-2-cyclohexenone upon addition of indium(III) chloride. Subsequent addition of alcohol nucleophiles led to the desired 3-alkoxy-2-cyclohexenones.

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5

Fujii, Tatsuya, Tomohiro Ozawa, Yasuhiro Funahashi, Koichiro Jitsukawa, and Hideki Masuda. "Synthesis of Mononuclear Non-Heme Iron(III)-Hydroperoxo Complex as an Oxidative Catalyst." Advanced Materials Research 11-12 (February 2006): 331–34. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.331.

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Mononuclear FeII complex [FeII(ppba)]2+ (ppba = (6-pivalamido-2-pyridylmethyl) (2-pyridylmethyl)tert-butylamine) (1) has been synthesized and structurally characterized. The addition of H2O2 (10eq) to an acetone solution of 1 at -78°C generated FeIIIPPBA-OOH species, accompanied by a color change from pale yellow to reddish purple, which showed an intense absorption band corresponding to LMCT band (HOO- to Fe) at 528 nm (ε = 1120 M-1cm-1). The ESR spectrum for FeIIIPPBA-OOH species (g// = 4.22, g⊥ = 7.70 in acetone at 77 K) was typical of a high-spin FeIII species, suggesting that the FeIIIPPB

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6

Weir, D., J. C. Scaiano, and D. I. Schuster. "A reinvestigation of the interaction between triplet states of cyclohexenones and amines." Canadian Journal of Chemistry 66, no. 10 (1988): 2595–600. http://dx.doi.org/10.1139/v88-407.

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Laser flash photolysis studies lead to the conclusion that the short-lived triplet states of cyclohexenones are readily quenched by amines. For example, in the case of 2-cyclohexen-1-one (1) its triplet state (τT = 40 ns in acetonitrile) is quenched by triethylamine with a rate constant of (9.0 ± 0.8) × 107 M−1 s−1. Cyclohexenone triplets are also quenched efficiently by DABCO and by triphenylamine leading to the formation of the corresponding amine radical cations. The new evidence reported rules out the involvement of long-lived detectable exciplexes.

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7

Schuster, David I., Jie-Min Yang, Jan Woning, Timothy A. Rhodes, and Anton W. Jensen. "Mechanism of acid-catalyzed photoaddition of methanol to 3-alkyl2-cyclohexenones." Canadian Journal of Chemistry 73, no. 11 (1995): 2004–10. http://dx.doi.org/10.1139/v95-247.

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Contrary to a previous report, it is concluded that formation of methanol adducts to 3-methyl-2-cyclohexenones and of deconjugated enones on irradiation of the enones in acidified solutions proceeds via protonation of the intermediate enone π,π* triplet excited state and not by protonation of a relatively long-lived ground state trans-cyclohexenone. A rate constant for protonation of the triplet state of 3-methyl-2-cyclohexenone by sulfuric acid of 1.7 × 109 M−1 s−1 was determined by laser flash photolysis in ethyl acetate. Based on quantum efficiencies of product formation, a rate constant of

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8

Atioğlu, Zeliha, Mehmet Akkurt, Flavien A. A. Toze, Gunay Z. Mammadova, and Humay M. Panahova. "Crystal structure and Hirshfeld surface analysis of 3,3′,3′′-[(1,3,5-triazine-2,4,6-triyl)tris(oxy)]tris(5,5-dimethylcyclohex-2-en-1-one)." Acta Crystallographica Section E Crystallographic Communications 74, no. 7 (2018): 1035–38. http://dx.doi.org/10.1107/s2056989018009003.

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The three cyclohexenone rings of the title compound, C27H33N3O6, adopt slightly distorted envelope conformations, with the C atom bearing two methyl groups as the flap atom in each case. These cyclohexenone mean planes form dihedral angles of 87.41 (11), 70.73 (11) and 70.47 (11)° with the 1,3,5-triazine ring, while the dihedral angle between the cyclohexenone mean planes are 57.52 (12), 23.75 (12) and 53.21 (12)°. In the crystal, molecules are linked via C—H...O hydrogen bonds, forming a three-dimensional network.

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9

Sureshbabu, N., and V. Sughanya. "6-Hydroxy-5-[(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-enyl)(4-nitrophenyl)methyl]-1,3-dimethylpyrimidine-2,4(1H,3H)-dione." Acta Crystallographica Section E Structure Reports Online 69, no. 11 (2013): o1690—o1691. http://dx.doi.org/10.1107/s1600536813028584.

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In the title compound, C21H23N3O7, the pyrimidinedione ring adopts a screw-boat conformation, whereas the cyclohexenone ring adopts an envelope conformation, with the C atom bearing the methyl groups as the flap atom. The dihedral angle between the mean planes of the pyrimidinedione and cyclohexenone rings is 58.78 (2)°. The pyrimidinedione and cyclohexenone rings form dihedral angles of 59.94 (3) and 54.73 (2)°, respectively, with the 4-nitrophenyl ring. Relatively strong intramolecular O—H...O hydrogen bonds are observed. In the crystal, molecules are linked by C—H...O hydrogen bonds, formin

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10

Leepasert, Theerachart, Patchreenart Saparpakorn, Kittipong Chainok, and Tanwawan Duangthongyou. "Crystal structure of 5-[(benzoyloxy)methyl]-5,6-dihydroxy-4-oxocyclohex-2-en-1-yl benzoate." Acta Crystallographica Section E Crystallographic Communications 76, no. 7 (2020): 1096–100. http://dx.doi.org/10.1107/s2056989020007793.

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The crystal structure of the natural product zeylenone, C21H18O7, was confirmed by single-crystal X-ray diffraction. The crystal structure has three chiral centers at positions C1, C5 and C6 of the cyclohexanone ring, but the absolute configuration could not be determined reliably. The methyl benzoate and benzoyloxy substituents at positions C1 and C5 of the cyclohexenone ring are on the same side of the ring with the dihedral angle between their mean planes being 16.25 (10)°. These rings are almost perpendicular to the cyclohexenone ring. The benzoate groups and two hydroxyl groups on the cyc

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11

Simón, Ernesto, Fernando Pardo, David Lorenzo, Aurora Santos, and Arturo Romero. "Kinetic model of 2-cyclohexenone formation from cyclohexanol and 2-cyclohexenol dehydrogenation." Chemical Engineering Journal 192 (June 2012): 129–37. http://dx.doi.org/10.1016/j.cej.2012.03.041.

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12

Siegel, Ulrich, Ru¨diger Mues, Ralph Do¨nig, and Theophil Eicher. "A cyclohexenone fromPlagiochila longispina." Phytochemistry 30, no. 11 (1991): 3643–46. http://dx.doi.org/10.1016/0031-9422(91)80084-e.

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13

Naghiyev, Farid N., Mehmet Akkurt, Rizvan K. Askerov, et al. "Crystal structure and Hirshfeld surface analysis of 6-benzoyl-3,5-diphenylcyclohex-2-en-1-one." Acta Crystallographica Section E Crystallographic Communications 76, no. 5 (2020): 720–23. http://dx.doi.org/10.1107/s2056989020005381.

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In the title compound, C25H20O2, the central cyclohexenone ring adopts an envelope conformation. The mean plane of the cyclohexenone ring makes dihedral angles of 87.66 (11) and 23.76 (12)°, respectively, with the two attached phenyl rings, while it is inclined by 69.55 (11)° to the phenyl ring of the benzoyl group. In the crystal, the molecules are linked by C—H...O and C—H...π interactions, forming a three-dimensional network.

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14

PARK, JUN-HWAN, and HOI-SEON LEE. "Toxicities of Eucalyptus dives Oil, 3-Carvomenthenone, and Its Analogues against Stored-Product Insects." Journal of Food Protection 81, no. 4 (2018): 653–58. http://dx.doi.org/10.4315/0362-028x.jfp-17-399.

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ABSTRACT The insecticidal toxicities of essential oils and other active components extracted from Eucalyptus dives leaves (as well as structural analogues) were studied against stored-product insects, Plodia interpunctella and Tribolium castaneum. 3-Carvomenthenone was purified from E. dives oil, and the structures were elucidated by electron ionization mass spectra, 1H-nuclear magnetic resonance (NMR), 13C-NMR, heteronuclear multiple quantum coherence, 1H-1H correlation spectroscopy, and distortionless enhancement by polarization transfer NMR. Using the fumigant method against P. interpunctel

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15

Chen, Shifeng, Chen Zhang, and Jian-feng Qi. "Diisopropyl 3-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-5-oxocyclohex-3-ene-1,1-dicarboxylate." Acta Crystallographica Section E Structure Reports Online 65, no. 6 (2009): o1183. http://dx.doi.org/10.1107/s160053680901544x.

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The title compound, C24H30O7, displays atransconfiguration with respect to the C=C bond. The cyclohexenone ring has an envelope conformation; the flap atom (with the isopropoxycarbonyl groups) is displaced by 0.664 (3) Å from the plane of the other five ring atoms and the carbonyl O atom. The dihedral angle between the cyclohexenone ring and the benzene ring is 7.85 (9)°. Themetaandparamethoxy O atoms are displaced by 0.003 (7) and 0.031 (4) Å, respectively, from the benzene ring to which they are attached.

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16

Sapnakumari, M., K. Divya, K. B. Aswin, and J. Dalin. "Antimicrobial and Antioxidant Study of Some Newly Synthesized Chalcones and Cyclohexenone Derivatives." Asian Journal of Chemistry 35, no. 1 (2022): 114–18. http://dx.doi.org/10.14233/ajchem.2023.24057.

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Chalcones and cyclohexenone derivatives obtained from various substituted aldehydes and substituted acetophenones are described. Chalcones were obtained by the Claisen-Schmidt condensation reaction of aldehydes with substituted acetophenones. Base catalyzed cyclocondensation of ethyl acetoacetate to chalcones under microwave irradiation leads to the formation of cyclohexenone derivatives. The prepared compounds are characterized by IR, 1H NMR and 13C NMR spectral methods. These are screened for their antimicrobial activity against Staphylococcus aureus, Escherichia coli, Aspergillus niger, Asp

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17

H. Byers, Jeffrey, and Thomas A. Spencer. "A novel 1,4 cyclohexenone annulation." Tetrahedron Letters 26, no. 6 (1985): 713–16. http://dx.doi.org/10.1016/s0040-4039(00)89116-9.

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18

Rukachaisirikul, Vatcharin, Sathit Buadam, Souwalak Phongpaichit, and Jariya Sakayaroj. "Amide, cyclohexenone, and cyclohexenone–sordaricin derivatives from the endophytic fungus Xylaria plebeja PSU-G30." Tetrahedron 69, no. 50 (2013): 10711–17. http://dx.doi.org/10.1016/j.tet.2013.10.063.

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19

VERHE, R. "ChemInform Abstract: 3-Isobutoxy-2-cyclohexenone: A Versatile Synthon for the Regiospecific Alkylation of Cyclohexenones." ChemInform 24, no. 52 (2010): no. http://dx.doi.org/10.1002/chin.199352309.

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20

Mousavi, Seyedeh Hekmat, Mohammad Reza Mohammadizadeh, Samira Poorsadeghi, et al. "One-pot synthesis of new alkyl 1-naphthoates bearing quinoline, pyranone and cyclohexenone moieties via metal-free sequential addition/oxidation reactions." RSC Advances 11, no. 58 (2021): 36748–52. http://dx.doi.org/10.1039/d1ra07092d.

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21

Jadhav, Amol P., V. U. Bhaskara Rao, Pradeep Singh, R. G. Gonnade, and Ravi P. Singh. "Asymmetric vinylogous Michael reaction of cyclic enones with silyloxy furans." Chemical Communications 51, no. 73 (2015): 13941–44. http://dx.doi.org/10.1039/c5cc05617a.

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22

Che, Chao, Qianwen Huang, Hanliang Zheng та Gangguo Zhu. "Copper-catalyzed cascade annulation of unsaturated α-bromocarbonyls with enynals: a facile access to ketones from aldehydes". Chemical Science 7, № 7 (2016): 4134–39. http://dx.doi.org/10.1039/c5sc04980f.

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23

Sarkar, Rumpa, Surya Kanta Samanta, Avantika Hasija, Deepak Chopra, Debabani Ganguly, and Mrinal K. Bera. "A practical route to arylated dihydroacridine derivatives via nickel boride mediated intramolecular reductive cyclization-concomitant dehydration." New Journal of Chemistry 46, no. 15 (2022): 7168–76. http://dx.doi.org/10.1039/d1nj05196b.

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24

Wisetsai, Awat, Ratsami Lekphrom, and Florian T. Schevenels. "A novel cyclohexenone from Trachyspermum roxburghianum." Natural Product Research 32, no. 21 (2018): 2499–504. http://dx.doi.org/10.1080/14786419.2017.1423299.

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25

Semisch, C., and P. Margaretha. "Photochemistry of 6-trifluoromethyl-2-cyclohexenone." Journal of Fluorine Chemistry 34, no. 1 (1986): 105–15. http://dx.doi.org/10.1016/s0022-1139(00)81930-2.

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26

Voss, Jürgen, Rüdiger Röske, Gunnar Ehrlich, and Gunadi Adiwidjaja. "Unexpected isolation of a cyclohexenone derivative." Zeitschrift für Naturforschung B 74, no. 11-12 (2019): 819–24. http://dx.doi.org/10.1515/znb-2019-0115.

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AbstractKnoevenagel reaction of pivaloylacetone with formaldehyde and subsequent aldol condensation ends up with 3-methyl-4,6-dipivaloylcyclohex-2-enone. The structure of the product is proved by an X-ray structure determination.

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27

Trivedi, Girish, Manikrao Salunkhe, Prajakta Sarang, and Arun Yadav. "Synthesis of Novel Steroidal Hydroxy Cyclohexenone." Synlett 2007, no. 13 (2007): 2133–35. http://dx.doi.org/10.1055/s-2007-984898.

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28

Rukachaisirikul, Vatcharin, Sathit Buadam, Souwalak Phongpaichit, and Jariya Sakayaroj. "ChemInform Abstract: Amide, Cyclohexenone, and Cyclohexenone-Sordaricin Derivatives from the Endophytic Fungus Xylaria plebeja PSU-G30." ChemInform 45, no. 19 (2014): no. http://dx.doi.org/10.1002/chin.201419223.

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29

Ganji, Saidulu, Padma Bukya, Venkateswarlu Vakati, Kamaraju Seetha Rama Rao, and David Raju Burri. "Highly efficient and expeditious PdO/SBA-15 catalysts for allylic oxidation of cyclohexene to cyclohexenone." Catal. Sci. Technol. 3, no. 2 (2013): 409–14. http://dx.doi.org/10.1039/c2cy20627g.

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30

Valdivia, V., N. Bilbao, J. F. Moya, et al. "Pseudo enantiomeric mixed S/P ligands derived from carbohydrates for the 1,4-addition of phenyl boronic acid to cyclohexenone." RSC Advances 6, no. 4 (2016): 3041–47. http://dx.doi.org/10.1039/c5ra10181f.

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31

Ara, Gulshan, Muhammed Shah Miran, Md Mominul Islam, M. Yousuf A. Mollah, M. Muhibur Rahman, and Md Abu Bin Hasan Susan. "1,8-Diazabicyclo[5.4.0]-undec-7-ene based protic ionic liquids and their binary systems with molecular solvents catalyzed Michael addition reaction." New Journal of Chemistry 44, no. 32 (2020): 13701–6. http://dx.doi.org/10.1039/d0nj03012k.

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Michael addition reaction of acetylacetone and cyclohexenone has been studied using 1,8-diazabicyclo[5.4.0]-undec-7-ene (DBU) based protic ionic liquids and their binary systems with DBU, water and acetic acid as catalysts.

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32

Hall, Christopher J. J., Indi S. Marriott, Kirsten E. Christensen, Aaron J. Day, William R. F. Goundry та Timothy J. Donohoe. "Extension of hydrogen borrowing alkylation reactions for the total synthesis of (−)-γ-lycorane". Chemical Communications 58, № 32 (2022): 4966–68. http://dx.doi.org/10.1039/d2cc01248k.

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The total synthesis of (–)-γ-lycorane (10 steps) was completed from cyclohexenone. This is one of the first examples of hydrogen borrowing C–C bond formation being used as a key step in a total synthesis project.

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33

Wen, Zhen-Kang, Xiao-Xue Wu, Wen-Kai Bao, Jing-Jing Xiao та Jian-Bin Chao. "Palladium-Catalyzed Regioselective Coupling Cyclohexenone into Indoles: Atom-Economic Synthesis of β-Indolyl Cyclohexenones and Derivatization Applications". Organic Letters 22, № 12 (2020): 4898–902. http://dx.doi.org/10.1021/acs.orglett.0c01763.

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34

Smitha, G., and K. Sreekumar. "Chiral dendrigraft polymer for asymmetric synthesis of isoquinuclidines." RSC Advances 6, no. 88 (2016): 85643–58. http://dx.doi.org/10.1039/c6ra15548k.

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A copper complex of chiral modified dendrigraft amidoamine polymer with a pentaerythritol initiated polyepichlorohydrin core, PEN-G<sub>2</sub>, on a solid resin support is employed in the synthesis of isoquinuclidines via aza Diels–Alder reaction between cyclohexenone and imines.

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35

Desrat, Sandy, Camille Remeur, and Fanny Roussi. "Development of an efficient route toward meiogynin A-inspired dual inhibitors of Bcl-xL and Mcl-1 anti-apoptotic proteins." Organic & Biomolecular Chemistry 13, no. 19 (2015): 5520–31. http://dx.doi.org/10.1039/c5ob00354g.

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The synthesis, on a large scale, with very good yield and er via an efficient strategy, of a chiral 4-substituted 2-cyclohexenone intermediate, was a milestone in the synthesis of seven analogues of meiogynin A, a natural sesquiterpenoid dimer.

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36

Okoth, Dorothy A., and Neil A. Koorbanally. "Cardanols, Long Chain Cyclohexenones and Cyclohexenols from Lannea schimperi (Anacardiaceae)." Natural Product Communications 10, no. 1 (2015): 1934578X1501000. http://dx.doi.org/10.1177/1934578x1501000126.

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Alkenyl cyclohexenones (1a-d), alkenyl cyclohexenols (2a-c and 3b-d) and cardanols (4a-d) were isolated from the stem bark and root of Lannea schimperi. The alkenyl cyclohexenones (1a and 1d) and cardanols (4a and 4d) have side chains which have not been reported previously, in combination with the core skeletal structures. In addition, compounds 2a-c and 3b-d are all new cyclohexenols. Also isolated were the triterpenes, taraxerone and taraxerol, and sitosterol. The suite of compounds isolated (cyclohexenones and cyclohexenols) make up a nice biosynthetic pathway to the cardanols. The 5-[alke

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37

Booker-Milburn, Kevin I., and David F. Thompson. "A new 4-substituted-2-Cyclohexenone synthesis." Tetrahedron Letters 34, no. 45 (1993): 7291–94. http://dx.doi.org/10.1016/s0040-4039(00)79311-7.

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38

Quevillon, Tracy M., and Alan C. Weedon. "The photochemistry of 3-nitro-2-cyclohexenone." Tetrahedron Letters 37, no. 23 (1996): 3939–42. http://dx.doi.org/10.1016/0040-4039(96)00747-2.

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39

Lvov, Andrey G., Max Mörtel, Anton V. Yadykov, Frank W. Heinemann, Valerii Z. Shirinian, and Marat M. Khusniyarov. "Photochromic diarylethene ligands featuring 2-(imidazol-2-yl)pyridine coordination site and their iron(II) complexes." Beilstein Journal of Organic Chemistry 15 (October 15, 2019): 2428–37. http://dx.doi.org/10.3762/bjoc.15.235.

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A new family of photochromic diarylethene-based ligands bearing a 2-(imidazol-2-yl)pyridine coordination unit has been developed. Four members of the new family have been synthesized. The photoactive ligands feature non-aromatic ethene bridges (cyclopentene, cyclopentenone, and cyclohexenone), as well as closely spaced photoactive and metal coordination sites aiming a strong impact of photocyclization on the electronic structure of the coordinated metal ion. The ligands with cyclopentenone and cyclohexenone bridges show good cycloreversion quantum yields of 0.20–0.32. The thermal stability of

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40

Rao, N. S., B. Bajia, Y. K. Srivastava, and Ravindra Kumar. "Microwave Induced Synthesis and Anti bacterial Activity of Some 6-(2-Hyroxy phenyl)-4-(substituted phenyl) -3-oxo-2, 3, 4, 5- tetrahydro-1H-indazoles." E-Journal of Chemistry 5, no. 1 (2008): 39–42. http://dx.doi.org/10.1155/2008/739732.

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The title compounds were synthesized by condensation of 2-hydroxy chalcones with ethylacetoacetate to get intermediate 3,5-diaryl-6-carbethoxy-2-cyclohexenone which were subsequently treated with hydrazine hydrate to afford the title compounds. All the transformation was carried out under microwave induced conditions. The synthesized compounds were screened for their antibacterial activityin vitro.

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41

CECIL, Jamey C., Carrie W. DYER, Steven A. FLEMING, and Theodore C. JESSOP. "Structural Elucidation of a Photocycloaddition Dimer of Cyclohexenone." Analytical Sciences 15, no. 9 (1999): 895–97. http://dx.doi.org/10.2116/analsci.15.895.

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42

Cruciani, G., and P. Margaretha. "Photochemistry of 6-trifluoromethyl-4,4-dimethyl-2-cyclohexenone." Journal of Fluorine Chemistry 37, no. 1 (1987): 95–101. http://dx.doi.org/10.1016/s0022-1139(00)83090-0.

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43

Sommart, Ubonta, Vatcharin Rukachaisirikul, Yaowapa Sukpondma, et al. "A cyclohexenone derivative from Diaporthaceous fungus PSU-H2." Archives of Pharmacal Research 32, no. 9 (2009): 1227–31. http://dx.doi.org/10.1007/s12272-009-1907-5.

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44

Schamp, N., E. De Bundel, and E. Delarue. "On the dimerization of 5,5-dlmethyl-2-cyclohexenone." Bulletin des Sociétés Chimiques Belges 75, no. 3-4 (2010): 230–37. http://dx.doi.org/10.1002/bscb.19660750308.

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45

Jung, Michael E., and Laurie S. Starkey. "New preparation of o-aryloxyphenols via cyclohexenone oxides." Tetrahedron Letters 36, no. 41 (1995): 7363–66. http://dx.doi.org/10.1016/0040-4039(95)01657-0.

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46

Cambie, RC, ND Renner, PS Rutledge, and PD Woodgate. "A Formal Total Synthesis of 3-O-Demethylfortamine." Australian Journal of Chemistry 44, no. 1 (1991): 61. http://dx.doi.org/10.1071/ch9910061.

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p-Benzoquinone has been converted into the substituted cyclohexenone (11) in five steps and 33% overall yield by a Diels-Alder cycloaddition-cycloreversion approach in which anthracene functions as a protecting and stereodirecting group. The elaboration of (11) in four steps to the known epoxide (22) constitutes a formal total synthesis of 3-O-demethylfortamine (2).

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47

Budak, Yakup, and Esra Findik. "Unexpected lactonization accompanying addition of ethyl acetoacetate to chalcones derived from 3-acetylthiophene." Collection of Czechoslovak Chemical Communications 76, no. 10 (2011): 1255–61. http://dx.doi.org/10.1135/cccc2010150.

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Chalcone derivatives containing thiophene ring were prepared by the condensation of 3-acetylthiophene with aromatic aldehydes in excellent yields. The addition of ethyl acetoacetate to chalcone derivatives 3a–3h in the presence of solid NaOH in CH2Cl2 resulted in the formation of the mixture of bicyclic lactone derivatives 5a–5h and 6-(ethoxycarbonyl)cyclohexenone derivatives 6a–6h.

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48

Cha, Joo Hwan, Yong Seo Cho, Jae Kyun Lee, Junghwan Park, and Hiroyasu Sato. "2,2′-[(E)-3-(4-Nitrophenyl)prop-2-ene-1,1-diyl]bis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-one)." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2510. http://dx.doi.org/10.1107/s1600536812032242.

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In the title compound, C25H29NO6, each of the cyclohexenone rings adopts a half-chair conformation. The hydroxy and carbonyl O atoms face each other and are oriented to allow for the formation of two intramolecular O—H...O hydrogen bonds. In the crystal, weak C—H...O hydrogen bonds are formed between molecules, generating a two-dimensional supramolecular structure.

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49

Polla, Magnus, and Torbjörn Frejd. "Synthesis of optically active cyclohexenol derivatives via enzyme catalyzed ester hydrolysis of 4-acetoxy-3-methyl-2-cyclohexenone." Tetrahedron 47, no. 30 (1991): 5883–94. http://dx.doi.org/10.1016/s0040-4020(01)86539-x.

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50

Raysi, I., M. R. Toosi, and E. Babaie. "Liquid Phase Oxidation of Cyclohexene to Cyclohexenone over M (M = Co, Mn, Cr, Cu)/UiO-66-Sal Catalysts." Russian Journal of Physical Chemistry A 97, no. 9 (2023): 1891–900. http://dx.doi.org/10.1134/s0036024423090182.

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