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Journal articles on the topic 'Unsaturated ketone'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Liu, Hsing-Jang, Waiseng Martin Feng, Jeung Bea Kim, and Eric N. C. Browne. "Lewis acid catalyzed Diels–Alder reactions of two useful dienyl phosphate esters." Canadian Journal of Chemistry 72, no. 10 (1994): 2163–75. http://dx.doi.org/10.1139/v94-275.

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The Lewis acid catalyzed Diels–Alder reactions of dienyl phosphate esters 1 and 2 were examined. 2-Diethylphosphoryloxy-1,3-butadiene (1) was found to react with a variety of α,β-unsaturated carbonyl compounds under Lewis acid catalysis with excellent regioselectivity to give synthetically useful cyclohexene derivatives. The adducts were produced in accordance with the normal rules governing the Diels–Alder addition. In the presence of stannic chloride acyclic α,β-unsaturated ketones such as ethyl vinyl ketone and methyl vinyl ketone reacted rapidly with diene phosphate 1 to give exclusively t

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2

Dörr, Aurélie A., and William D. Lubell. "Homoallylic ketones and pyrroles by way of copper-catalyzed cascade additions of alkyl-substituted vinyl Grignard reagents to esters." Canadian Journal of Chemistry 85, no. 11 (2007): 1006–17. http://dx.doi.org/10.1139/v07-114.

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Exploring the scope of the copper-catalyzed cascade addition of vinyl Grignard reagents to carboxylic esters, a set of substituted homoallylic ketones (γ,δ-unsaturated ketones) have been synthesized in 11%–94% yields from treatment of methyl 4-methoxybenzoate and methyl N-Boc-β-alaninate with different methyl-, dimethyl-, and phenyl-substituted vinyl Grignard reagents in the presence of catalytic amounts of CuCN in THF. The respective 2,4-di-, 2,3,5-tri-, and 2,3,4,5-tetrasubstituted pyrroles were obtained in 47%–93% yields from the homoallylic ketones by a sequence featuring ozonolysis follow

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3

Ni, Jixiang, Àlex Cristòfol та Arjan W. Kleij. "Formation of β-cyano-ketones through cyanide-promoted ring-opening of cyclic organic carbonates". Organic Chemistry Frontiers 8, № 16 (2021): 4520–26. http://dx.doi.org/10.1039/d1qo00770j.

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In an unusual cascade process involving KCN, vinyl cyclic carbonates are converted into β-cyano ketones with the subsequent extrusion of carbon dioxide and acetonitrile facilitating a Michael addition to an intermediate α,β-unsaturated ketone.

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4

Köhler, Thomas, Thomas Huhn та Ulrich Groth. "α-Thioalkylation of Zinc Dienolates as an Entry to 4-Substituted 1-tert-Butoxy-7a-methylhexahydroindenes". French-Ukrainian Journal of Chemistry 3, № 1 (2015): 29–45. http://dx.doi.org/10.17721/fujcv3i1p29-45.

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Hexahydroindenes 10 are readily available in 3 steps with an overall yield of 41 – 45 % starting from the Hajos Wiechert ketone 1. Alkylation of the α,β-unsaturated ketone 1 at C-4 has been achieved by thioalkylation of the corresponding zinc dienolate 2 with α-chlorosulfides of type 3. Subsequent in situ reduction and desulfurization of the β-(phenylthio) ketones 4 leads directly to the 4-substituted hexahydroindene-5-ols 6 which can be deoxygenated via their mesylates to the hexahydroindenes 10.

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5

Chen, Chen-Yin, Jin-Cherng Lien, Chien-Yu Chen, Chin-Chuan Hung, and Hui-Chang Lin. "Design, Synthesis and Evaluation of Novel Derivatives of Curcuminoids with Cytotoxicity." International Journal of Molecular Sciences 22, no. 22 (2021): 12171. http://dx.doi.org/10.3390/ijms222212171.

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Curcumin and curcuminoids have been discussed frequently due to their promising functional groups (such as scaffolds of α,β-unsaturated β-diketone, α,β-unsaturated ketone and β′-hydroxy-α,β-unsaturated ketone connected with aromatic rings on both sides) that play an important role in various bioactivities, including antioxidant, anti-inflammatory, anti-proliferation and anticancer activity. A series of novel curcuminoid derivatives (a total of 55 new compounds) and three reference compounds were synthesized with good yields using three-step organic synthesis. The anti-proliferative activities

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6

Li, Wan-Di, Jia-Shuo Zhang, Lin-Yan Zhang, Zhong-Wen Liu, Juan Fan та Xian-Ying Shi. "Rhodium-Catalyzed Alkylation of Aromatic Ketones with Allylic Alcohols and α,β-Unsaturated Ketones". Catalysts 13, № 8 (2023): 1157. http://dx.doi.org/10.3390/catal13081157.

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The direct transition-metal-catalyzed addition of C–H bonds to unsaturated C=X (X=C, O, and N) bonds via C–H bond activation has been recognized as a powerful tool for the construction of C–C bonds (in terms of atom and step economy). Herein, the direct rhodium-catalyzed C–H bond addition of aromatic ketones to allylic alcohols and α,β-unsaturated ketones that affords β-aryl carbonyl compounds is described, in which a ketone carbonyl acts as a weakly coordinating directing group. It was found that the type of alkyl in aromatic ketones is crucial for the success of the reaction. This transforma

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7

Elečko, Pavol, Štefan Toma, Miroslav Vrúbel, and Eva Solčániová. "Reactivity of [m]ferrocenophanones: The aldol condensation." Collection of Czechoslovak Chemical Communications 51, no. 5 (1986): 1112–18. http://dx.doi.org/10.1135/cccc19861112.

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Investigation of the reaction of [m]ferrocenophanones with p-chlorobenzaldehyde in basic medium showed that these cyclic ketones are much more reactive than their acyclic counterparts. The size of the bridge and the position of the carbonyl group influenced the reaction. Thus, [m]ferrocenophan-1-ones (m =3,4 afforded β-hydroxyketones only, [5]ferrocenophan-1-one gave in addition an α,β-unsaturated ketone, and [4]ferrocenophane-2-one yielded only α,β-unsaturated ketones. Oxidation of [m]ferrocenophanes with MnO2 furnished the expected monoketones and [4]ferrocenophane-1,4-dione and [5[ferroceno

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8

Mondal, Rina, Tapas K. Mandal та Asok K. Mallik. "An Expeditious and Safe Synthesis of Some Exocyclic α,β-Unsaturated Ketones by Microwave-Assisted Condensation of Cyclic Ketones with Aromatic Aldehydes over Anhydrous Potassium Carbonate". Organic Chemistry International 2012 (23 грудня 2012): 1–8. http://dx.doi.org/10.1155/2012/456097.

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A rapid, efficient, and solvent-free methodology for synthesis of exocyclic α,β-unsaturated ketones of the categories E-3-arylidene-4-chromanones, E-2-arylidene-1-tetralones, E-2-arylidene-1-indanones, E-3-cinnamylidene-4-chromanones, E-2-cinnamylidene-1-tetralones, E-2-cinnamylidene-1-indanones, α,α′-(E,E)-bis(arylidene)-cycloalkanones, and α,α′-(E,E)-bis(cinnamylidene)-cycloalkanones has been developed through cross-aldol condensation of the constituent cyclic ketones and aldehydes by microwave irradiation over anhydrous potassium carbonate. However, for condensation of 1-thio-4-chromanones

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9

Syed Nasir Abbas Bukhari. "Discovery of a new tetramethylpyrazine based chalcone with α, β-Unsaturated ketone moiety as a potential anticancer agent". International Journal of Research in Pharmaceutical Sciences 11, № 1 (2020): 826–29. http://dx.doi.org/10.26452/ijrps.v11i1.1901.

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In this study, a new ligustrazine-based chalcone molecule has been synthesized that contains an extra α, β-Unsaturated ketone moiety along with α, the β-Unsaturated carbonyl group of chalone. A new tetramethylpyrazine (TMP) based aldehyde was synthesized to make the TMP (ligustrazine) as part of chalcone and then it was reacted with newly synthesized ketone containing additional α, β-Unsaturated ketone moiety. After characterization, this new compound was evaluated for its effect on different types of cancer cell lines and very promising results were obtained. The growth of these cancer cells

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10

Alcock, Nathaniel W., Timothy N. Danks, Christopher J. Richards та Susan E. Thomas. "Conversion of α,β-unsaturated ketone complexes into α,β-unsaturated ketene complexes". J. Chem. Soc., Chem. Commun., № 1 (1989): 21–22. http://dx.doi.org/10.1039/c39890000021.

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11

Mihai, Marina, Luminitza Pârvulescu, Anca Marton, Constantin Draghici, Richard A. Varga, and Mircea D. Gheorghiu. "Vinylferrocene as paradigm for the two-step reaction mode with ketenes. The case of tert-butylcyanoketene (Moore’s ketene)." Collection of Czechoslovak Chemical Communications 75, no. 9 (2010): 949–61. http://dx.doi.org/10.1135/cccc2010028.

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The reaction of tert-butylcyanoketene (TBCK, Moore’s ketene; 1) with ethenylferrocene (2) yields four products: the cyclobutanone 2-trans-tert-butyl-2-cyano-3-ferrocenylcyclobutanone (3), two δ-lactones as 2:1 ketene:alkene cis and trans adducts 3-cis-tert-butyl-3-cyano-6-(1-cyano-2,2-dimethylpropylidene)-4-ferrocenyltetrahydro-2-pyrone (4) and 3-trans-tert-butyl-3-cyano-6-(1-cyano-2,2-dimethylpropylidene)-4-ferrocenyl-tetrahydro-2-pyrone (5), and an α,β-unsaturated ketone 3-cyano-1E-ferrocenyl-5,5-dimethylhex-1-en-3-one (6). The configuration of the bulky groups (t-Bu and ferrocenyl) in cyclo

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12

Lee, Adam Shih-Yuan, Mei-Chun Lin, Shu-Huei Wang та Li-Shin Lin. "A Mild Isomerization Reaction for β,γ-Unsaturated Ketone to α,β-Unsaturated Ketone". Journal of the Chinese Chemical Society 51, № 2 (2004): 371–76. http://dx.doi.org/10.1002/jccs.200400058.

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13

Almatarneh, Mansour H., Imarat Y. Alnemrat, Reema A. Omeir, et al. "Mechanistic Investigation of the Pyrolysis of Brown Grease." Journal of Chemistry 2020 (December 22, 2020): 1–11. http://dx.doi.org/10.1155/2020/8844225.

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The conversion of brown grease using pyrolysis reactions represents a very promising option for the production of renewable fuels and chemicals. Brown grease forms a mixture of alkanes, alkenes, and ketones at a temperature above 300°C at atmospheric pressure. This work is a computational study of the detailed reaction mechanisms of brown grease pyrolysis using DFT methodology. Prior experimental investigations confirmed product formation consistent with a set of radical reactions with CO2 elimination, as well as ketone by product formation, CO forming reactions, and formation of alcohols and

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14

Yamamoto, Yasunori, Takashi Nishikata та Norio Miyaura. "1,4-Additions of arylboron, -silicon, and -bismuth compounds to α,β-unsaturated carbonyl compounds catalyzed by dicationic palladium(II) complexes". Pure and Applied Chemistry 80, № 5 (2008): 807–17. http://dx.doi.org/10.1351/pac200880050807.

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An enantioselective synthesis of cyclic and acyclic β-aryl ketone and aldehydes via Pd(II)-catalyzed 1,4-addition of Ar-m [m = B(OH)2, BF3K, Si(OMe)3, SiF3, BiAr2] to α,β-unsaturated ketones or aldehydes is described. The catalytic cycle involves transmetallation between Ar-m and Pd complexes as a key process, the mechanism of which is discussed on the basis of characterization of the transmetallation intermediate and electronic effect of the substituents. The enantioselection mechanism and efficiency of a chiraphos ligand for structurally planar α,β-unsaturated ketones are discussed on the ba

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15

Das, Debarati, and Kumar Biradha. "Cocrystals and Salts of 3,5-Bis(pyridinylmethylene)piperidin-4-one with Aromatic Poly-Carboxylates and Resorcinols: Influence of Stacking Interactions on Solid-State Luminescence Properties." Australian Journal of Chemistry 72, no. 10 (2019): 742. http://dx.doi.org/10.1071/ch19062.

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Two bis-pyridyl-substituted α,β-unsaturated ketones were shown to form complexes with carboxylic acids and resorcinol derivatives. The neutral acid–acid homosynthon was observed in only one complex out of the five acid-bis-pyridyl containing complexes studied here, while the –COO−⋯HOOC– synthon was found to be dominant as it was observed in four complexes. The carboxylates self-assembled to form discrete dimeric, anionic, 1D chains and also exhibited mixed ionic hydrogen bonds. On the other hand, resorcinol derivatives displayed O–H⋯N hydrogen bonding to form tetrameric aggregates of bis-pyrid

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16

Potikha, Lyudmyla. "Peculiarities of the reactions of a,b-unsaturated g-bromoketones with hydrazine derivatives." French-Ukrainian Journal of Chemistry 6, no. 1 (2018): 56–66. http://dx.doi.org/10.17721/fujcv6i1p56-66.

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The reaction result of a,b-unsaturated g-bromoketones with hydrazines depends on the structure of the reagents. Reaction with hydrazine hydrate leads to the mixture of 3,5- di(R)pyridazine, 3,6-di(R)pyridazine and 2,4-di(R)-1H-pyrrol-1-amine derivatives. The formation of three types of products is due to the structure of the unsaturated aliphatic ketone. Two competing reaction schemes of ketones with hydrazines are considered, which include condensation or Michael-type addition in the first stage. The main products of the reactions of halogen-substituted derivatives of g-bromodipnone with aryl

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17

Nencka, Radim, Hubert Hřebabecký, and Martin Dračínský. "Model synthesis of six-membered carbocyclic spironucleosides." Collection of Czechoslovak Chemical Communications 75, no. 12 (2010): 1259–72. http://dx.doi.org/10.1135/cccc2010103.

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Model study focusing on the synthesis of carbocyclic spironucleosides is presented. Hydantoin base was built on the easily accessible ketone precursors by Bucherer–Bergs reaction. On saturated substrates the reaction proceeded smoothly. On α,β-unsaturated ketones, however, the Bucherer–Bergs reaction competed with Michael addition of cyanide ion. We showed that the equilibrium of the reaction could be significantly shifted depending on the applied reaction conditions. Significant diastereoselectivity was observed for tandem Michael addition/Bucherer–Bergs reaction.

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18

McCarthy, Sean, and Charles M. Marson. "A stepwise lactol carbocyclisation to bridged ethers via a keto–acetal cascade." Journal of Chemical Research 46, no. 1 (2022): 174751982210794. http://dx.doi.org/10.1177/17475198221079498.

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Lactol carbocyclisations provide a succinct method of constructing the oxabicyclo[3.2.1]octane scaffold, a motif present in various natural products of medicinal interest. Lactols containing an unsaturated ketone or ester were prepared by olefin cross-metathesis; an electrophilic alkene derived from methyl vinyl ketone underwent concomitant terminal α-methylenation and oxa-Michael addition to give a bridged lactol which then underwent oxygen-to-carbon transposition in the presence of titanium (IV) chloride giving the desired unsaturated carbocyclic seven-membered bridged ether via a novel dehy

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19

Fyfe, C. A., and M. S. McKinnon. "High-resolution 13C CP/MAS solid-state nmr investigation of the thermal degradation of poly(methylvinylketone)." Canadian Journal of Chemistry 63, no. 1 (1985): 232–35. http://dx.doi.org/10.1139/v85-038.

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The structural changes occurring in poly(methylvinylketone) when exposed to high temperatures have been investigated by high-resolution 13C solid-state nmr. The degradation proceeds via the aldol condensation of pendant ketone groups to form a cyclic β-hydroxy ketone which is dehydrated to the cyclic α,β-unsaturated ketone. As the degradation continues there is the formation of polycyclic structures and aromatization of the sample.

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20

R., S. BHAKUNI, N. SHUKLA Y., and S. THAKUR R. "Heptacos-3-en-25-one-A New Unsaturated Ketone from Ajuga bracteosa." Journal of Indian Chemical Society Vol. 67, April 1990 (1990): 353–55. https://doi.org/10.5281/zenodo.6202238.

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Central Institute of Medicinal and Aromatic Plants, Lncknow-226 016 <em>Manuscript received 4 September 1989, accepted 6 December 1989</em> Heptacos-3-en-25-one-A New Unsaturated Ketone from<em> Ajuga bracteosa</em>

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21

R., S. BHAKUNI, N. SHUKLA Y., and S. THAKUR R. "Heptacos-3-en-25-one-A New Unsaturated Ketone from Ajuga bracteosa." Journal of Indian Chemical Society Vol. 67, April 1990 (1990): 355. https://doi.org/10.5281/zenodo.6203647.

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Central Institute of Medicinal and Aromatic Plants Lucknow-226 016 <em>Manuscript received 4 September 1989, accepted 6 December 1989</em> Heptacos-3-en-25-one-A New Unsaturated Ketone from <em>Ajuga bracteosa.</em>  

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22

Dancer, RJ, RK Haynes, WA Loughlin та SC Vonwiller. "Efficient Trapping of Ketone Enolates With Acrylate and β-Sulfonylacrylate Thioesters, β-Sulfonyl-, β-Sulfinyl- and β-Chloro-Vinyl Ketones; Facile Preparation of a Hydrindanone, cis-Dimethyloctalone, and Unsaturated 1,5-Dicarbonyl Compounds". Australian Journal of Chemistry 43, № 8 (1990): 1375. http://dx.doi.org/10.1071/ch9901375.

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Tandem conjugate addition-ring closure involving reaction of the lithium enolate arising from conjugate addition of lithiated (E)-but-2- enyldiphenylphosphine oxide to 2-methyl-cyclopent-2-enone with two moles of t-butylthioacrylate generates a hydrindanol, and, in the presence of copper(I), a lactone derived from the hydrindanol. β-Sulfonylacrylate phenyl and t-butyl thioesters, β-chlorovinyl, β- sulfonyl- and β-sulfinyl-vinyl ketones react with the foregoing enolate, and with the enolate generated through conjugate addition of a methylcuprate to 2-methylcyclohexenone to give unsaturated 1,5-

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23

Sun, Cuihong, Yanli Zeng, Baoen Xu, and Lingpeng Meng. "Mechanism and kinetics for the reactions of methacrolein and methyl vinyl ketone with HO2 radical." New Journal of Chemistry 41, no. 15 (2017): 7714–22. http://dx.doi.org/10.1039/c7nj01260h.

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24

Tumer, F., Y. Taskesenligil, A. Dastan, and M. Balci. "Attempted Synthesis of a Highly Strained Bicyclic Alkyne: Reaction of 8-Chloro-6,9-Dihydro-5,9-Methano-5h-Benzocycloheptene With Potassium T-Butoxide and an Anomalous Substitution Reaction at a Vinyl System." Australian Journal of Chemistry 49, no. 5 (1996): 599. http://dx.doi.org/10.1071/ch9960599.

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Treatment of alkene (9) with N- bromosuccinimide gave a mixture of monobromides [(10) and (11)] which were hydrolysed to the corresponding exo alcohol (13). Oxidation of (13) and subsequent hydrogenation of unsaturated ketone (14) afforded the ketone (15). Ketone (15) was treated with PCl5, followed by potassium t- butoxide to give chloro alkene (8b). Reaction of (8b) with potassium t- butoxide resulted in the formation of unexpected allyl ether (18) whose formation mechanism has already been discussed.

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25

Grant, RD, JT Pinhey, E. Rizzardo та GC Smith. "The Photochemistry of α,Β-Unsaturated Nitro Compounds and Nitronic Acids. Concerning Deconjugation and α,Β-Unsaturated Ketone Formation". Australian Journal of Chemistry 38, № 10 (1985): 1505. http://dx.doi.org/10.1071/ch9851505.

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The photochemistry of cyclohexylidenenitromethane (6), 3-ethyl-2-nitropent-2-ene (7), (Z)-α-methyl-α- nitrostilbene (12), (E)-3-methyl- 1-nitro-1-phenylbut-1-ene (15) and 4,4-dimethyl-3-nitro-5α-cholest-2- ene (27) has been examined to determine the structural features required for deconjugation to the β, γ-unsaturated isomer. The mechanism of the light-induced formation of the corresponding α, β- unsaturated ketone , which may accompany deconjugation , has also been examined. Support for a scheme involving γ-hydrogen abstraction to give an unsaturated nitronic acid, followed by N- hydroxyoxaz

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26

Kharaev, A. M., R. Ch Bazheva, D. A. Alakaeva, M. A. Yalhoroeva, M. M. Parchieva, and E. A. Bazheva. "Synthesis and properties of halogen-containing unsaturated polyarylene ethers." Plasticheskie massy, no. 1 (March 12, 2025): 17–20. https://doi.org/10.35164/0554-2901-2025-01-17-20.

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The paper presents the results of the synthesis of simple aromatic copolyether ketone and copolyether sulfone using the monomers 1,1-dichloro-2,2-di-4[4’{1’1’-dichloro-2’-(4”-oxyphenyl)ethylene}-phenoxyphenyl]ethylene and 1,1-dichloro-2,2-di-4[4’{1’1’dichloro-2’-(4’’-oxy-3’’,5’’dibromophenyl)ethylene}2’,6’-dibromophenoxyphenyl]ethylene. The copolyethers were obtained by high-temperature polycondensation according to the mechanism of nucleophilic substitution in N,N-dimethylacetamide. The structure, structure and main properties of the synthesized copolyethers were studied. The composition and

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27

Kvasnica, Miroslav, Iva Tišlerová, Jan Šarek, Jan Sejbal та Ivana Císařová. "Preparation of New Oxidized 18-α-Oleanane Derivatives". Collection of Czechoslovak Chemical Communications 70, № 9 (2005): 1447–64. http://dx.doi.org/10.1135/cccc20051447.

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19β,28-Epoxy-4,5-seco-3,5-cyclo-18α-olean-3(5)-ene (2) is an appropriate compound for oxidations, which lead to new oxidized compounds with potential biological activities. Several oxidations were used such as epoxidation, allylic oxidation, oxidative cleavage of double bond and other ones. From the starting compound epoxides 3a, 3b and unsaturated ketone 4 were prepared. This ketone was further oxidized to diketone 6 and anhydride 7. The double bonds of all unsaturated compounds were cleaved with ruthenium tetroxide to afford new A-seco oleananes. The structure and stereochemistry of the comp

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28

Benhamed, Lakhdar, Sidi Mohamed Mekelleche та Wafaa Benchouk. "Theoretical Insight into the Reversal of Chemoselectivity in Diels-Alder Reactions of α,β-Unsaturated Aldehydes and Ketones Catalyzed by Brønsted and Lewis Acids". Organics 2, № 1 (2021): 38–49. http://dx.doi.org/10.3390/org2010004.

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Experimentally, a reversal of chemoselectivity has been observed in catalyzed Diels–Alder reactions of α,β-unsaturated aldehydes (e.g., (2E)-but-2-enal) and ketones (e.g., 2-hexen-4-one) with cyclopentadiene. Indeed, using the triflimidic Brønsted acid Tf2NH as catalyst, the reaction gave a Diels–Alder adduct derived from α,β-unsaturated ketone as a major product. On the other hand, the use of tris(pentafluorophenyl)borane B(C6F5)3 bulky Lewis acid as catalyst gave mainly the cycloadduct of α,β-unsaturated aldehyde as a major product. Our aim in the present work is to put in evidence the role

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29

Zhao, Na, Qian Gong, Rui Xue Zhang, et al. "A fluorescent probe with aggregation-induced emission characteristics for distinguishing homocysteine over cysteine and glutathione." Journal of Materials Chemistry C 3, no. 32 (2015): 8397–402. http://dx.doi.org/10.1039/c5tc01159k.

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30

Moura, Nuno M. M., Cristina Núñez, M. Amparo F. Faustino, et al. "Preparation and ion recognition features of porphyrin–chalcone type compounds as efficient red-fluorescent materials." J. Mater. Chem. C 2, no. 24 (2014): 4772–83. http://dx.doi.org/10.1039/c3tc32496f.

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31

Menezes, José C. J. M. D. S. "Arylidene indanone scaffold: medicinal chemistry and structure–activity relationship view." RSC Advances 7, no. 15 (2017): 9357–72. http://dx.doi.org/10.1039/c6ra28613e.

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32

L. Morgan, Sandra M. Ward, Ralph E., Daniel. "INHALATION TOXICITY STUDIES OF THE α,β-UNSATURATED KETONES: Ethyl Vinyl Ketone". Inhalation Toxicology 13, № 8 (2001): 633–58. http://dx.doi.org/10.1080/08958370126864.

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33

Morgan, Daniel L., Sandra M. Ward, Ralph E. Wilson та ін. "INHALATION TOXICITY STUDIES OF THE α,β-UNSATURATED KETONES: Ethyl Vinyl Ketone". Inhalation Toxicology 13, № 8 (2001): 633–58. http://dx.doi.org/10.1080/08958370152409883.

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34

Bjelakovic, Mira, Vladimir Pavlovic, Milan Dabovic, and Ljubinka Lorenc. "Acid-catalyzed and photolytic reactivity of some unsaturated B-nor-5, 10-secosteroidal ketones." Journal of the Serbian Chemical Society 68, no. 4-5 (2003): 303–12. http://dx.doi.org/10.2298/jsc0305303b.

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The acid-catalyzed reaction of (Z)- and (E)-B-nor-5,10-seco-ketones 2 and 3 resulted in an intramolecular cyclization to give the 5-hydroxy-A-nor-1?,5?-10(19)-methylidene derivative 8, the 5?-hydroxy-A-nor-1(10)-unsaturated compound 9 and the 5?,10?-dihydroxy A-nor-product 10, from the (Z)-isomer and the 5-hydroxy-A-nor-1?,5?-10(19)-methylidene product 11, from the (E)-isomer. Upon UV-irradiation, the (Z)- and (E)-seco-ketones 2 and 3 underwent a reversible (Z)/(E) and (E)/(Z)-isomerization and in addition to a transannular photocyclization to afford the 10(19)-methylidene derivatives 8 and 11

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35

Nerkar, Amit Gajanan, and Srushti Ghadge. "Ethnopharmacological review of ginger for anticancer activity." Current Trends in Pharmacy and Pharmaceutical Chemistry 4, no. 4 (2022): 158–64. http://dx.doi.org/10.18231/j.ctppc.2022.028.

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Zingiber officinale is a plant found locally in India that has been widely used as a flavouring agent in savoury dishes such as curries and sweets such as cakes and cookies, alcoholic beverages as well as in alcoholic beverages. like in tea. Ginger is a well-known herb, commonly used in traditional medicine all over the world. Ginger has been used for thousands of years to treat colds, nausea, arthritis, migraines, and high blood pressure. The many pharmacological activities of ginger are antiemetic, antidiabetic, analgesic, anti-inflammatory, anticancer, antioxidant, anticoagulant, antibacter

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36

Ma, Ziling, та Yuanhua Wang. "Dirhodium(ii)/P(t-Bu)3 catalyzed tandem reaction of α,β-unsaturated aldehydes with arylboronic acids". Organic & Biomolecular Chemistry 16, № 40 (2018): 7470–76. http://dx.doi.org/10.1039/c8ob01997e.

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37

Ji, Shun-Jun, Eiji Takahashi, T. Tomoyoshi Takahashi та C. Akira Horiuchi. "Synthesis of α,β-unsaturated ketone from α-iodo ketone using photoirradiation". Tetrahedron Letters 40, № 52 (1999): 9263–66. http://dx.doi.org/10.1016/s0040-4039(99)02010-9.

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38

Alikin, M. B., D. A. Panfilov, N. A. Lavrov, and I. M. Dvorko. "Obtaining unsaturated polyester resins and materials based on them using recycled polyethylene terephthalate." Plasticheskie massy, no. 9-10 (November 2, 2019): 20–22. http://dx.doi.org/10.35164/0554-2901-2019-9-10-20-22.

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A technique has been developed for producing an unsaturated polyester resin by transesterifying the product of glycolysis of secondary polyethylene terephthalate using maleic and phthalic anhydride. The curing process was studied, it was found that the unsaturated polyester resin was cured by the action of oligoether acrylate (TGM-3), peroxide compound (methyl ethyl ketone peroxide) and accelerator (manganese hydroxide divalent, acetylacetone, cobalt stearate). The physic-mechanical characteristics of polymeric materials based on unsaturated polyester resin, the analysis of which indicates a h

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39

Bailey, KE, and BR Davis. "Clemmensen Reduction. XI. Fragmentation Reactions of Some 3-Acetylcycloalkanones." Australian Journal of Chemistry 48, no. 11 (1995): 1827. http://dx.doi.org/10.1071/ch9951827.

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Clemmensen reduction of a series of 3-acetylcycloalkanones yields, as the major product, an acyclic unsaturated ketone, the product of fragmentation. Some normal carbonyl-methylene reduction also occurs. A mechanistic rationale for the fragmentation is advanced.

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40

Makarova, N. V., A. A. Pimenov, M. N. Zemtsova, and I. K. Moiseev. "ChemInform Abstract: Synthesis of Unsaturated Ketones from 3-Hydroxy-1-adamantyl Methyl Ketone." ChemInform 33, no. 17 (2010): no. http://dx.doi.org/10.1002/chin.200217077.

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41

Horiuchi, C. Akira, Shun-Jun Ji, Masatoshi Matsushita та Wen Chai. "Oxidative Synthesis of α,β-Unsaturated Ketone from α-Iodo Ketone Using Peracid". Synthesis, № 2 (2004): 202–4. http://dx.doi.org/10.1055/s-2003-44371.

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42

Klochkova, I. N., та A. A. Anis’kov. "Intramolecular heterocyclization of α,β-unsaturated ketone thiosemicarbazones". Russian Journal of Organic Chemistry 45, № 1 (2009): 146–50. http://dx.doi.org/10.1134/s1070428009010205.

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43

Cambie, C., William A. Denny, Michael P. Hay, Lorna H. Mitchell, Peter S. Rutledge, and Paul D. Woodgate. "Modifications of Rings B and C of Podocarpic Acid: Towards the Synthesis of Quassinoids Richard." Australian Journal of Chemistry 52, no. 1 (1999): 7. http://dx.doi.org/10.1071/c98015.

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Attempts to alkylate products from Birch reductions of derivatives of podocarpic acid are reported. Attempted reductive silylation of ring C of methyl 12-methoxypodocarpa-8,11,13-trien-19-oate (5) gives products of C4 ester reduction only. The enantiopure form of the bis(ethylene acetal) (15) of 19-norpodocarp-8-ene-3,12-dione, a potentially useful intermediate for quassinoid synthesis, has been prepared from the ketone (34). Functionality at C8 on the β-face has been successfully introduced by abnormal Reimer–Tiemann reactions of podocarpic acid (2) and its 13-methyl derivative (10). The satu

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44

Sivaranjan, K., O. Padmaraj та J. Santhanalakshmi. "Synthesis of highly active rGO-supported mono and bi-metallic nanocomposites as catalysts for chemoselective hydrogenation of α,β-unsaturated ketone to alcohol". New Journal of Chemistry 42, № 3 (2018): 1725–35. http://dx.doi.org/10.1039/c7nj02669b.

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Schematic of the complete mechanism for chemoselective hydrogenation process of α,β-unsaturated ketone to alcohol through the newly developed rGO-supported mono (Au/rGO and Pd/rGO) and bi-metallic (Cu–Au/rGO and Cu–Pd/rGO) nanocomposite catalysts.

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45

Vidali, Veroniki P., Georgia Nigianni, Georgia D. Athanassopoulou та ін. "Synthesis of Novel Pyrazolo[3,4-b]pyridines with Affinity for β-Amyloid Plaques". Molbank 2022, № 1 (2022): M1343. http://dx.doi.org/10.3390/m1343.

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Three novel pyrazolo[3,4-b]pyridines were synthesized via the cyclization of 5-amino-1-phenylpyrazole with the corresponding unsaturated ketone in the catalytic presence of ZrCl4. The ketones were afforded by modifying a stabilized ylide facilitated Wittig reaction in fairly high yields. The novel compounds exhibited exciting photophysical properties with the dimethylamine phenyl-bearing pyrazolopyridine showing exceptionally large Stoke’s shifts. Finally, both the dimethylamino- and the pyrene-substituted compounds demonstrated high and selective binding to amyloid plaques of Alzheimer’s dise

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46

Sejbal, Jan, Jiří Klinot, Daniela Hrnčířová та Alois Vystrčil. "Oxidation of 19β,28-epoxy-18α-oleanan-3-one and -1-one with peracids". Collection of Czechoslovak Chemical Communications 50, № 12 (1985): 2753–59. http://dx.doi.org/10.1135/cccc19852753.

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The reaction of 3-oxo derivative I and 1-oxo derivative XII of 19β,28-epoxy-18α-oleanane with peracids leads to corresponding lactones II or XIII, respectively, which were converted to A-seco acids III, V, and XIV and esters IV, VI, VII, and XV. Under acid catalysis oxidation of ketone I results in the degradation of one methyl group in position 4 and formation of compounds VIII and IX. On reaction with 3-chloroperbenzoic acid the α,β-unsaturated ketone XVI gives epoxyketone XVII.

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47

Toan, Duong Ngoc, Nguyen Dinh Thanh, Mai Xuan Truong та Nguyen Minh Thao. "Synthesis of some 1H-1,5-benzodiazepine Series Containing Chromene Ring from α,β-Unsaturated Ketones of 6-Acetyl-5-Hydroxy-4-Methylcoumarin". Current Organic Synthesis 17, № 5 (2020): 404–10. http://dx.doi.org/10.2174/1570179417666200415152105.

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Background: Reaction of α,β-unsaturated ketones with o-phenylenediamine afforded corresponding 2,3-dihydro-1H-1,5-benzodiazepines. Objective: α,β-Unsaturated ketones of 6-acetyl-5-hydroxy-4-methylcoumarin are precursors for synthesis of 2,3-dihydro-1H-1,5-benzodiazepines by a reaction with o-phenylenediamine. Methods: Enones of 6-acetyl-5-hydroxy-4-methylcoumarin were prepared from this ketone and (un)substituted benzaldehydes in the presence of piperidine, triethylamine, or pyridine as a catalyst in absolute ethanol with 1:1 molar ratios, respectively. 2',3'-Dihydro-1H-1',5'-benzodiazepines w

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48

Narasaka, K. "Synthesis of azaheterocycles from oxime derivatives." Pure and Applied Chemistry 75, no. 1 (2003): 19–28. http://dx.doi.org/10.1351/pac200375010019.

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Electrophilic amination of Grignard reagents has been accomplished by using O-sulfonyloximes as amination reagents. Benzophenone O-sulfonyloxime derivatives react with Grignard reagents on sp2 nitrogen, yielding primary amines by successive hydrolysis of the resulting N-alkylimines. Various cyclic imines are synthesized by Pd-catalyzed reaction from olefinic oxime derivatives. That is, treatment of O-pentafluorobenzoyloximes of olefinic ketones with a catalytic amount of Pd(PPh3)4 and triethylamine affords nitrogen-containing heterocycles, such as pyrroles, pyridines, isoquinolines, spiro-imin

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49

Marwa A. Atiyah, Olfat A. Nief, and Abdulkader M. Noori. "New Pyrazolines with Imine Moiety: Synthesis, Characterization." Tikrit Journal of Pure Science 26, no. 5 (2021): 40–47. http://dx.doi.org/10.25130/tjps.v26i5.175.

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Chalcone was prepared by claisen- schmidt condensation between reaction equivalent moles from 4-amino acetophenone with thiophen -2-carboxaldehyde in presence sodium hydroxide as base, the mechanism was involved the abstraction α Proton by base from the α-carbon of the ketone to form carbanion, which attacks carbonyl of aldehyde contains no α-hydrogens to produce α-β-unsaturated ketone, Chalcone derivative used to synthesize pyrazoline derivatives by condensation with 2,4-dinitro phenyl hydrazine. The newly synthesized compounds were determined using spectroscopic methods such as FTIR, Mass sp

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50

Vulovic, Bojan, Ivana Maric, Radomir Matovic, and Radomir Saicic. "Synthesis of vinyldihydropyran by cooperative catalysis." Journal of the Serbian Chemical Society 81, no. 12 (2016): 1335–43. http://dx.doi.org/10.2298/jsc161102103v.

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?5-Unsaturated aldehydes with a suitably positioned allylic halide, or phosphate, leaving group undergo doubly-catalyzed cyclization to give dihydropyran derivatives. The cyclization proceeds under the synergetic action of diazabicycloundecene and Pd(PPh3)4. This type of transformation was also accomplished with an aryl ketone.

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