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Journal articles on the topic 'Phenacyi bromide'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Neelam, Dhakar, Ojha Swati, Lal Jat Jawahar, and L. Talesara G. "Synthesis and characterization of some 3-N-alkoxyphthalimido-5-arylidene-2- { [ 4-( 4-substituted phenyl)-1 ,3-thiazol-2-yl]imino }-1 ,3-thiazolidin-4-ones." Journal of Indian Chemical Society Vol. 85, June 2008 (2008): 660–64. https://doi.org/10.5281/zenodo.5816939.

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Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, M. L. Sukhadia University. Udaipur-313 001, Rajasthan, India <em>E-mail :</em> gtalesara@yahoo.com <em>Manuscript received 17 July 2006. revised 6 September 2007, accepted 15 April 2008</em> 4-Chloro/methyl phenacyl bromide 1a-b reacted with thiourea to furnish 2-amino thiazole 2a-b through Hantzsch's process, which were converted to their thlazolidinone derivatives 4a-b, by the reaction of corresponding thiazolyl thiourea 3a-b with chloroacetic acid in the presence of sodium acetate. Subsequent treatment of 4a-b wit

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2

M., KRISHNA PILLAY, and M. MAZHAR NAZEEB KHAN S. "Kinetics and Mechanism of Oxidation of Phenacyl Bromide by Alkaline Hexacyanoferrate(III)." Journal of Indian Chemical Society Vol. 70, Mar 1993 (1993): 209–10. https://doi.org/10.5281/zenodo.5913740.

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Department of Chemistry, Bharathidasan University, Tiruchirapalli-620 024 <em>Manuscript received 14 November 1991, revised 9 November 1992, accepted 7 January 1993</em> Kinetics of oxidation a few phenacyl bromides in aqueous acetonitri'e by hexacyanoferrate(III) at 10<sup>°</sup> ,has been studied. The reaction is first order in oxidant, phenacyl bromide and hydroxide. The enolate of pheoacyl bromide and ferricyaoide are the reactive species. A suitable mechanism is suggested. Substituent effect is also analysed.

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3

Basha, Shaik Firoj, and Shaik Anwar. "A Three Component Protocol for the Synthesis of Aziridines using BF3·(OEt)2." Asian Journal of Chemistry 32, no. 5 (2020): 1001–6. http://dx.doi.org/10.14233/ajchem.2020.22315.

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Synthesis of N-(1R,2S)-2-(bromo-3-oxo-1,3-diphenylpropyl)-4-methylbenzene sulfonamide and N-(1R,2S)-(2-bromo-3-oxo-1,3-diphenylpropyl)-4-methylbenzene sulfonamide was carried out by a three component reaction using phenacyl bromide, p-toluenesulfonamide and carboxyaldehyde in presence of mild Lewis acid such as BF3·(OEt)2 in dichloromethane. The synthetic utility of this protocol was carried out with syn-isomer to yield corresponding cis-aziridines. This protocol was operationally simple for a wide variety of substituted carboxaldehydes and substituted phenacyl bromides.

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4

Jwad, Rasha, Adnan Mohammed, and Mehdi Shihab. "SYNTHESIS OF 1,2,3-TRIAZOLES BASED ON PHENACYL AZIDE DERIVATIVES VIA CLICK CHEMISTRY." Iraqi Journal of Science 53, no. 3 (2024): 487–94. http://dx.doi.org/10.24996/iraqijournalofscience.v53i3.12746.

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Etherification of n-hexanol, n-heptanol and n-octanol with propargyl bromide in the presence of sodium hydroxide in DMF afforded the terminal alkynes (2) a, b and c. Phenacyl bromide, p-bromophenacyl bromide and p-phenylphenacyl bromide were converted to corresponding azides (4) a, b and c respectively by traditional SN2 reaction of the mentioned bromides and sodium azide in DMF. The cycloaddition of the propargyl ethers (2) with the prepared organic azides (4) using click conditions gave the target 1,4-disubstituted 1,2,3- triazoles (5)-(7) in good yields. All the synthesized triazoles were c

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5

B., HARI KISHAN, and V. SUNDARAM E. "Anomalous Kinetic Behaviour of Methyl and Methoxy Derivatives on the Oxidation of Phenacyl Bromides by Cerium(IV) in Sulphuric Acid Medium." Journal of Indian Chemical Society Vol. 62, Sep 1985 (1985): 654–56. https://doi.org/10.5281/zenodo.6322015.

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Department of Chemistry, Kakatiya University, Warangal-506 009 <em>Manuscript received 23 May 2985, accepted 11 September 1985</em> The kinetics of cerium(IV) oxidation of p-methyl- and <em>p</em>-methoxy-phenacyl bromides have been investigated in 40-70% (v/v) acetic acid containing varying concentrations of sulphuric acid. The reactions are first<em> </em>order with<em> </em>respect to [oxidant] as well as [substrate]. The reactions are acid-catalysed and the absence of water molecule participation is indicated and discussed through Hammett's acidity and Bunnett's plots. Th

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6

B., HARI KISHAN, and V. SUNDARAM B. "Kinetics of Oxidation of Phenacyl Halides by Vanadium( v) in Sulphuric and Perchloric Acid Media." Journal of Indian Chemical Society Vol. 66, Jun 1989 (1989): 363–64. https://doi.org/10.5281/zenodo.5958301.

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Department of Chemistry, Kakatiya University, Warangal-506 009 <em>Manuscript received </em>8 <em>July 1988, revised 30 January 1989, accepted 18 </em>April.<em>1989</em> A kinetic study of oxidation of phenacyl halides, namely, phenacyl chloride, phenacyl bromide and phenacyl iodide by vanadium(v) in acid medium, obeys first order with respect to [oxidant] and [substrata]. The reactions are acid-catalysed and various hypothesis for the mechanism of acid catalysis have been tested. The different reactivity of phenacyl halides is explained on the basis of different Inductive effect felt by

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7

Lomov, D. A., M. G. Abramyants, O. O. Zaporozhets, and T. M. Pekhtereva. "Quaternization of Methyl Picolinate with Some Phenacyl Bromides. Synthesis of DL-Baikiain Alkaloid." Журнал общей химии 94, no. 1 (2024): 105–12. http://dx.doi.org/10.31857/s0044460x24010095.

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By fusing methyl picolinate with phenacyl bromides, the corresponding phenacyl salts were obtained, cyclization of which in acetic anhydride led to previously undescribed 3-aryl-1H-pyrido[2,1-c][1,4]oxazinium bromides. Reduction of the quaternary salts of methyl picolinate followed by acid hydrolysis leads to the alkaloid DL-baikiain.

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8

Abu-Shanab, Fathi A. "Synthesis of 2,3,4,6-Tetrasubstituted Pyridines as Precursors to Bicycles and Polycycles." Journal of Chemical Research 23, no. 7 (1999): 430–31. http://dx.doi.org/10.1177/174751989902300713.

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Ammonium 1,1,3-tricyano-2-methylprop-2-enide 1a and sodium 2-amino-1,1,3-tricyanoprop-2-enide 1b are treated with H2S in absolute ethanol to afford 3,4,6-trisubstituted pyridine-2(1 H)-thione 3a,b; their structures are confirmed by reaction with phenacyl bromide to give 4a,b; also 3a,b reacts with DMFDMA to give 6a,b, and on treatment of 6a with phenacyl bromide affords 8; reaction of 4b with DMFDMA gave 9 while methylation of 3a,b by methyl iodide in ethanolic sodium hydroxide gives 10a,b.

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9

Baghdadchi, Jamil, Albert P. Chan, and James H. Hutchinson. "Reactions of substituted phenacyl bromides with various bases:p-methyl- andp-methoxyphenacyl bromide. II." Journal of Heterocyclic Chemistry 25, no. 3 (1988): 973–74. http://dx.doi.org/10.1002/jhet.5570250351.

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10

VlJAI, N. PATHAK, K. GOYAL MAHENDRA, JAIN MEENAKSHI, and C. JOSHI KRISHNA. "Synthesis of some New Fluorine containing Oxazoles, Oxadiazoles, Thiadiazoles and Triazines." Journal of Indian Chemical Society Vol.70, Jun 1993 (1993): 539–42. https://doi.org/10.5281/zenodo.5913958.

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Department of Chemistry, University of Rajasthan, Jaipur-300 004 <em>Manuscript received 31 March 1992, revised 16 October 1992, accepted 8 February 1993</em> Treatment of fluorine containing phenacyl bromides with urea or substituted arylureas afforded the corresponding 2-(amino/<em>N</em>-arylamino)-4-(fluoroaryl)oxazoles, and with ammonium acetate in glacial acetic acid yielded 2-methyl- 4-(fluoroaryl)oxazoles. Fluorinated arylglyoxals on refluxing with semicarbazide or thiosemicarbazide afforded arylglyoxalsemicarbazones/or thiosemicarbazones, cyclisation of these with potassium carbonate

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11

Fu, Qin, and Chao-Guo Yan. "Facile synthesis of functionalized spiro[indoline-3,2'-oxiran]-2-ones by Darzens reaction." Beilstein Journal of Organic Chemistry 9 (May 13, 2013): 918–24. http://dx.doi.org/10.3762/bjoc.9.105.

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A series of functionalized spiro[indoline-3,2'-oxiran]-2-ones was efficiently synthesized by Darzens reaction of phenacyl bromides with isatins both with N-alkyl groups and without N-substituent in the presence of potassium carbonate as a base catalyst. When two equivalents phenacyl bromides were used in the reaction, the N-substitution reaction of isatin also finished with the formation of spiro-oxirane-oxindoles.

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12

H., A. H. EL-SHERIEF, MAHMOUD A.M., R. EL-EZBAWY S., and EL-WARETH A. O. SARHAN ABD. "Synthesis and Reactions of some New Benzimidazoles. Part-II." Journal of Indian Chemical Society Vol. 74, Jan 1997 (1997): 24–26. https://doi.org/10.5281/zenodo.5876923.

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<strong>Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt</strong> <em>Manuscript received 1 February 1995, accepted 6 July 1995</em> <strong>Interaction of (</strong><em><strong>p</strong></em><strong>-benzimidazol-2-ylphenoxy)acetic acid hydrazide (1) with is othiocyanates affords acetylthiosemicarbazides (2a-c) which on cyclisation give 3a-c. Reaction of 3a with alkyl halide, ethyl chloroacetate and/or diethyl bromomalonate affords S-alkyl derivatives (4a-e). Condensation of 3a with p-substituted-phenacyl bromides gives 5a-c. Treatment of 3a with N-aryl and N

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13

Malan, Frederick P., Eric Singleton, Petrus H. van Rooyen, and Marilé Landman. "Tandem transfer hydrogenation–epoxidation of ketone substrates catalysed by alkene-tethered Ru(ii)–NHC complexes." New Journal of Chemistry 43, no. 22 (2019): 8472–81. http://dx.doi.org/10.1039/c9nj01220f.

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14

Roman, Gheorghe. "Schiff Bases and Triazolothiadiazines Derived from A Thiophene-Substituted 4-Amino-3-Mercapto-1,2,4-Triazole." Acta Chemica Iasi 27, no. 2 (2019): 137–54. http://dx.doi.org/10.2478/achi-2019-0011.

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Abstract 4-Amino-5-(thiophen-2-ylmethyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione was synthesized and converted into the corresponding Schiff bases using several aromatic aldehydes. Reaction of this aminotriazolethione with phenacyl bromides lead to triazolothiadiazines, which were subsequently reduced with NaBH4 to dihydrotriazolothiadiazines. The latter type of fused heterocycle has been also obtained directly by reacting one of the previously obtained Schiff base with phenacyl bromides. NMR analysis confirmed the structures of the synthesized compounds.

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15

Srinivasan, Chockalingam, Arunachalam Shunmugasundaram, and Natasan Arumugam. "Kinetics of the reactions of phenacyl bromide and of pare-substituted phenacyl bromides with benzoate and substituted trans-cinnamate ions." Journal of the Chemical Society, Perkin Transactions 2, no. 1 (1985): 17. http://dx.doi.org/10.1039/p29850000017.

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16

BALAN-PORCĂRAŞU, Mihaela, Alina NICOLESCU, Emilian GEORGESCU, et al. "Benzimidazolium bromide derivative inclusion complexes with native and modified beta-cyclodextrins." Revue Roumaine de Chimie 68, no. 3-4 (2024): 119–25. http://dx.doi.org/10.33224/rrch.2023.68.3-4.01.

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The interactions between four native and modified beta-cyclodextrins and a benzimidazolium bromide salt were analyzed through UV-Vis and NMR Spectroscopy. The new benzimidazolium salt was obtained by simple and efficient conversion of N-1 substituted 5,6-dimethylbenzimidazole with phenacyl bromide in acetone. In all cases, the complexes stoichiometry was 1:1, as determined from UV-Vis titrations. Based on the values for association constants, the strength of the interactions with benzimidazolium bromide was weakest with the methyl substituted beta-cyclodextrin and strongest with the sulfobutyl

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17

Slyvka, Nataliia, Lesya Saliyeva, Mariia Litvinchuk, Alina Grozav, Nina Yakovychuk та Mykhailo Vovk. "Synthesis, Аntibacterial, Аntifungal, and Antioxidant Activity of New (Benzo)Imidazo[2,1-b][1,3]Thiazine Quaternary Salts". Chemistry & Chemical Technology 19, № 2 (2025): 242–49. https://doi.org/10.23939/chcht19.02.242.

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A series of quaternary salts – 1-phenacyl(4-chlorophenacyl)-6-hydroxy-6,7-dihydro-5H-benzo[4,5]imidazo[2,1-b][1,3]thiazinium bromides 4a-f were obtained. Their structures were rigorously proven by the methods of 1H NMR, 13C NMR spectroscopy, and chromatography-mass spectrometry. All obtained compounds were tested in in vitro experiments for antibacterial, antifungal, and antioxidant activity. Bioscreening results showed that 1-(4-chlorophenacyl)-6-hydroxy-6,7-dihydro-5H-benzo[4,5]imidazo[2,1-b][1,3]thiazinium bromide 4f exhibits the highest antibacterial activity against the strain of gram-pos

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18

Cheng, Xiufang, Yi Peng, Jun Wu, and Guo-Jun Deng. "Palladium-catalyzed paraformaldehyde insertion: a three-component synthesis of benzofurans." Organic & Biomolecular Chemistry 14, no. 10 (2016): 2819–23. http://dx.doi.org/10.1039/c6ob00198j.

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19

Singh, Sonia, Alireza Hassanabadi, and Mohammad H. Mosslemin. "Synthesis of N-(3-Methyl-4-Phenyl-3H-Selenazol-2-Ylidene)Benzamide Derivatives." Journal of Chemical Research 42, no. 9 (2018): 474–75. http://dx.doi.org/10.3184/174751918x15359643889826.

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A three-component and one-pot reaction between phenacyl bromide and aroyl isoselenocyanates in the presence of methylamine gave N-(3-methyl-4-phenyl-3 H-selenazol-2-ylidene)benzamide derivatives in good yields.

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20

Wang, Yefei, Zhen Yang, Fengtao Zhan, et al. "Correction: Indolizine quaternary ammonium salt inhibitors part II: a reinvestigation of an old-fashioned strong acid corrosion inhibitor phenacyl quinolinium bromide and its indolizine derivative." New Journal of Chemistry 43, no. 43 (2019): 17123–24. http://dx.doi.org/10.1039/c9nj90149c.

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Correction for ‘Indolizine quaternary ammonium salt inhibitors part II: a reinvestigation of an old-fashioned strong acid corrosion inhibitor phenacyl quinolinium bromide and its indolizine derivative’ by Yefei Wang et al., New J. Chem., 2018, 42, 12977–12989.

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21

Balalaie, Saeed, Mohammad Zolfigol, Fatemeh Derakhshan-Panah, and Frank Rominger. "A Convenient Method for the Synthesis of Imidazo[1,2-a]pyridines with a New Approach." Synlett 29, no. 01 (2017): 89–93. http://dx.doi.org/10.1055/s-0036-1590906.

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A new approach for the efficient synthesis of imidazo[1,2-a]pyridines is described. The synthesis was carried out via the reaction of functionalized 2-aminopyridine that were formed through a three-component reaction and phenacyl bromide derivatives.

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22

Manasa, Kesari Lakshmi, Yellaiah Tangella, Namballa Hari Krishna, and Mallika Alvala. "A metal-free approach for the synthesis of amides/esters with pyridinium salts of phenacyl bromides via oxidative C–C bond cleavage." Beilstein Journal of Organic Chemistry 15 (August 5, 2019): 1864–71. http://dx.doi.org/10.3762/bjoc.15.182.

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An efficient, simple, and metal-free synthetic approach for the N- and O-benzoylation of various amines/benzyl alcohols with pyridinium salts of phenacyl bromides is demonstrated to generate the corresponding amides and esters. This protocol facilitates the oxidative cleavage of a C–C bond followed by formation of a new C–N/C–O bond in the presence of K2CO3. Various pyridinium salts of phenacyl bromides can be readily transformed into a variety of amides and esters which is an alternative method for the conventional amidation and esterification in organic synthesis. High functional group toler

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23

Barbuceanu, Stefania, Gabriela Almajan, Ioana Saramet, Constantin Draghici, Radu Socoteanu, and Florica Barbuceanu. "New S-alkylated 1,2,4-triazoles incorporating diphenyl sulfone moieties with potential antibacterial activity." Journal of the Serbian Chemical Society 74, no. 10 (2009): 1041–49. http://dx.doi.org/10.2298/jsc0910041b.

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Alkylation of the 5-{4-[(4-bromophenyl)sulfonyl]phenyl}-4-(3/4-methylphenyl)- 2,4-dihydro-3H-1,2,4-triazole-3-thiones 3a,b with various alkylation agents, i.e., ethyl bromide, phenacyl bromide and ethyl chloroacetate, afforded the S-substituted 1,2,4-triazoles 4-6a,b. The structures of these new compounds were elucidated by elemental analysis and IR, UV, 1H-NMR, 13C-NMR and MS spectroscopy. The newly synthesized products were tested for their antibacterial effects.

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24

M.S., S. SHANKER, B. REDDY R., V. P. CHANDRA MOULI G., and D. REDDY Y. "Synthesis and Cleavage Reactions of 9-Aryl-4H, 8H-pyrano[2,3:f]( I ,4)benzoxazin4-one Derivatives." Journal of Indian Chemical Society Vol. 66, Feb 1989 (1989): 138–39. https://doi.org/10.5281/zenodo.6303611.

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Department of Chemistry, Regional Engineering College,Warangal-506 004 Manuscript <em>received 27 June 1988, revised 9 November 1988, accepted 18 November 1988</em> Synthesis and Cleavage Reactions of<em> </em>9-Aryl<em>-4H, </em>8<em>H-</em>pyrano<em>[2,3 f ]( I ,4)</em>benzoxazin4-one Derivatives   

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25

Barbuceanu, Stefania Felicia, Laura Ileana Socea, Constantin Draghici, Elena Mihaela Pahontu, Theodora Venera Apostol, and Florica Barbuceanu. "Synthesis and Spectral Characterization of New S-Alkylated 1,2,4-Triazoles as Potential Biological Agents." Revista de Chimie 68, no. 10 (2017): 2436–39. http://dx.doi.org/10.37358/rc.17.10.5900.

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In the work we presented the behavior of 5-(4-(4-X-phenylsulfonyl)phenyl)-4-(n-propyl)-2H-1,2,4-triazole-3(4H)-thiones (X= Cl or Br) with some alkylation agents. Thus, new S-alkylated 1,2,4-triazole derivatives were synthesized by reaction of the corresponding 1,2,4-triazole-3-thione derivatives with different �-halogenated compounds (ethyl bromide, ethyl chloroacetate or phenacyl bromide), in basic medium. The structures of synthesized compounds were elucidated by spectral data (1H-NMR, 13C-NMR, mass spectrometry) and elemental analysis.

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26

Khlebnikov, Alexander F., Olesya A. Tomashenko, Liya D. Funt, and Mikhail S. Novikov. "A simple approach to pyrrolylimidazole derivatives by azirine ring expansion with imidazolium ylides." Org. Biomol. Chem. 12, no. 34 (2014): 6598–609. http://dx.doi.org/10.1039/c4ob00865k.

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27

B., DASH, K. DORA B., and S. PANDA C. "A New Synthesis of Aroyl Cyanides from Phenacyl Bromides." Journal of Indian Chemical Society Vol. 65, Feb 1988 (1988): 136–37. https://doi.org/10.5281/zenodo.6090336.

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Department of Chemistry, Berhampur University, Berhampur-760 007 <em>Manuscript received 23 November 1987, accepted 22 December 1987</em> A New Synthesis of Aroyl Cyanides from Phenacyl Bromides.

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28

Babaev, Eugene V., and Victor B. Rybakov. "Phenacylation of 6-Methyl-Beta-Nitropyridin-2-Ones and Further Heterocyclization of Products." Molecules 25, no. 7 (2020): 1682. http://dx.doi.org/10.3390/molecules25071682.

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Reaction between the derivatives of 6-methyl-beta-nitropyridin-2-one and phenacyl bromides was studied, and the yields observed were extremely low. The pyridones were converted via chloropyridines to methoxyderivatives, which were N-phenacylated. N-Phenacyl derivatives of 4,6-dimethyl-5-nitropyridin-2-one under the action of base gave 5-hydroxy-8-nitroindolizine and under acidic conditions gave 5-methyl-6-nitrooxazole[3,2-a]pyridinium salt, which underwent recycization with MeONa to 5-methoxy-8-nitroindolizine.

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29

Hua, Guoxiong, Junyi Du, Cameron L. Carpenter-Warren, David B. Cordes, Alexandra M. Z. Slawin, and J. Derek Woollins. "New insight into the chemistry of selenoureas: synthesis and single crystal structural study of diverse derivatives." New Journal of Chemistry 43, no. 18 (2019): 7035–43. http://dx.doi.org/10.1039/c9nj01059a.

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A series of new heteroatom derivatives of N-acylselenoureas was obtained through the reaction of KSeCN with acyl chloride and primary amines, followed by the cyclisation reaction with phenacyl bromides.

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Barbuceanu, Stefania-Felicia, Octavian Tudorel Olaru, Laura-Ileana Socea, et al. "S-Alkylated 1,2,4-Triazoles Derivatives Synthesis, spectral analysis and cytotoxicity evaluation." Revista de Chimie 70, no. 1 (2019): 13–17. http://dx.doi.org/10.37358/rc.19.1.6841.

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This paper presents synthesis, characterization and cytotoxicity assessment of six S-alkylated 1,2,4-triazoles derivatives that were obtained by treatment of some 1,2,4-triazole-3-thiones containing in the molecule phenylsulfonylphenyl and propyl or 4-bromophenylsulfonylphenyl and 4-methoxyphenyl fragments with different alkylation agents (ethyl bromide, ethyl chloroacetate or phenacyl bromide) in basic media. The synthesized compounds were physico-chemically characterized and the IR, 1H-NMR, 13C-NMR spectra were consistent with the assigned structures. The cytotoxicity of S-alkylated derivati

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31

Singh, Mandavi, Shyam Babu Singh, Shahin Fatma, Preyas Ankit, and Jagdamba Singh. "Development of five membered heterocyclic frameworks via [3+2] cycloaddition reaction in an aqueous micellar system." New J. Chem. 38, no. 7 (2014): 2756–59. http://dx.doi.org/10.1039/c4nj00325j.

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A series of novel dihydropyrrolo[2,1-a]isoquinolines and dihydropyrrolo[1,2-a]quinolines have been synthesized from isoquinolines/quinolines, various substituted phenacyl bromides and substituted dialkylacetylenedicarboxylates via [3+2] cycloaddition reaction.

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32

Sridharan, Makuteswaran, and Karnam J. R. Prasad. "Syntheses of Substituted Furo- and Pyrano-[2,3-a]carbazoles from 2-Cinnamoyl-1-hydroxycarbazoles." Zeitschrift für Naturforschung B 63, no. 9 (2008): 1112–16. http://dx.doi.org/10.1515/znb-2008-0916.

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Reaction of 2-cinnamoyl-1-hydroxycarbazoles 2a - d, with phenacyl bromide, mercuric acetate and H2O2/NaOH under different reaction conditions yielded 2-benzoyl-3-styryl-furo[2,3-a]carbazoles 3a-d, 2-benzylidene-furo[2,3-a]carbazol-3(10H)-ones 4a - d and 3-hydroxy-2-phenylpyrano- [2,3-a]carbazol-4(11H)-ones 5a - d, respectively.

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33

Emimmal, Maida Engels Selvaraj, and Veintramuthu Sankar. "Synthesis and Pancreatic Lipase Inhibitory Activity of Phenacyl Esters of N-Aroyl Amino Acids." Current Enzyme Inhibition 15, no. 2 (2019): 133–43. http://dx.doi.org/10.2174/1573408015666190920092114.

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Background: Obesity has become a major life-threatening disorder as it is associated with many risk factors such as coronary heart disease, hypertension, type II diabetes and certain forms of cancer. Pancreatic lipase inhibition is one of the alternate strategies to treat obesity. In our previous study, phenacyl ester of N-sulphonyl beta alanine was obtained as a hit molecule when pharmacophore- based virtual screening was carried out using reported pancreatic lipase inhibitors. Objective: In search of novel pancreatic lipase inhibitors, three series of phenacyl esters of Nsubstituted amino ac

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34

Raad, H. Turkey, A. Razzak Mahmood kubba Ammar, A. Fadhil Ammar, and N. AlShawi 3. Nada. "Synthesis and Anti-Inflammatory Activity of Some -5-Ethoxy-2- Mercapto Benzimidazole Derivatives." International Journal of Current Pharmaceutical Review and Research 8, no. 1 (2017): 24–27. https://doi.org/10.5281/zenodo.12678320.

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This article includes a description of new series of 5-ethoxy-2-mercapto benzimidazole derivatives, synthesized andevaluated for the anti-inflammatory activity; the synthesis involved the reaction of the parent nucleus (5-ethoxy-2-mercapto benzimidazole) with different p-phenacyl bromide substituents. All the newly synthesized compounds werescreened for their anti-inflammatory activity by egg albumin-induced rat hind paw edema method.

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35

Bakherad, Mohammad, Vahid Keley, and Amir H. Amin. "Synthesis of a Novel Heterocyclic Ring System: Imidazo[3,2-D] [1,2,4]Triazolo[3,4-B][1,3,4]Thiadiazine." Journal of Chemical Research 2008, no. 11 (2008): 633–34. http://dx.doi.org/10.3184/030823408x371236.

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Synthesis of the novel compounds 3-substituted-6-arylimidazo[3,2-d][1,2,4]triazolo[3,4-b][1,3,4]thiadiazines was achieved by the reaction of 6-amino-3-substituted-7H-[1,2,4]triazolo[3,4-jb][1,3,4]thiadiazines with 4-substituted-phenacyl bromides in refluxing ethanol.

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36

Demchenko, Nataliya, Zinaida Suvorova, Yuliia Fedchenkova, et al. "Synthesis and antibacterial activity of 3-arylaminomethyl-1-(2-oxo-2-arylethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a] azepin-1-ium bromides and aryl-(4-R1-phenyl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[cd]azulen-1-ylmethyl)-amines." ScienceRise: Pharmaceutical Science, no. 6 (34) (December 30, 2021): 51–57. http://dx.doi.org/10.15587/2519-4852.2021.249480.

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The aim of this work is to develop methods of synthesis of 3-arylaminomethyl-1-(2-oxo-2-arylethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-1-ium bromides and aryl-(4-R1-phenyl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[cd]azulen-1-ylmethyl)-amines and to study their antimicrobial activity against strains of gram-positive and gram-negative bacteria as well as yeast fungi. Materials and methods. 1Н NMR spectra were recorded on Bruker 400 spectrometer operating at frequency of 400 MHz. Antimicrobial activity of the compounds synthesized was evaluated by their minimum inhibitory

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37

Gali, Rajitha, Janardhan Banothu, Mahendar Porika, Ravibabu Velpula, Rajitha Bavantula, and Sadanandam Abbagani. "Synthesis and in vitro cytotoxic activity of novel coumarinylimidazo[2,1-b]thiazole derivatives." RSC Adv. 4, no. 96 (2014): 53812–19. http://dx.doi.org/10.1039/c4ra11428k.

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A series of novel coumarinylimidazo[2,1-b]thiazole derivatives were synthesized by the treatment of 3-(2-aminothiazol-4-yl)-2H-chromen-2-one with phenacyl bromides followed by Vilsmeier–Haack and Knoevenagel condensation reactions. All the synthesized compounds were evaluated for their in vitro cytotoxic activity.

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38

K., M. RAO, and JAYARAMA REDDY S. "Voltammetric Reductions of some Substituted-phenacyl Bromides." Journal of Indian Chemical Society Vol. 65, Jun 1988 (1988): 411–14. https://doi.org/10.5281/zenodo.6298910.

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Department of Chemistry, S. V. University, Tirupati-517 502 <em>Manuscript  received 11 February 1988, accepted 6 April 1988</em> Substituted-phenacyl bromides, such as <em>m</em>-nitro, <em>p</em>-phenyl, <em>p</em>-methyl, <em>p</em>-methoxy and <em>m</em>-methoxyphenacyl bromides have been reduced electrochemically at dropping mercury electrode and hanging mercury drop electrode using d c. polarography and cyclic voltammetry in 50% (v/v) ethanol- water and DMF- water mixtures. Comparative account of their reduction behaviour in different buffer systems is discussed.  The effect of

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39

Shahad Muhammad and Ahmed Ahmed. "Synthesis, characterization and photostability study of triazole derivatives." GSC Advanced Research and Reviews 9, no. 2 (2021): 066–72. http://dx.doi.org/10.30574/gscarr.2021.9.2.0251.

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heterocyclic derivative contain triazole ring was synthesized and characterized the product and their structures by infrared spectroscopy, 1H-NMR, 13C-NMR and instrumental techniques. Compound (4) was synthesized by reacting of Schiff base (3) with an three moles of alkyl halide (p-phenyl phenacyl bromide). Final product played an important role in photostabilizer of polymer (PS), and showed the activity as a photostabilizer when exposed to UV light (300 hours).

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40

Khan, Khalid M., Zafar S. Saifyb, Abdullah Khan, et al. "Syntheses of Selected Quaternary Phenacylbromopyridinium Compounds and their Biological Evaluation." Zeitschrift für Naturforschung B 54, no. 9 (1999): 1210–18. http://dx.doi.org/10.1515/znb-1999-0920.

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The studies, presented here, deal with the synthetic modification of 5-bromonicotinic acid on its nitrogen nucleus. The synthetic transformations were carried out by reacting equimolar amounts of 5-bromonicotinic acid and phenacyl halides in acetone. A range of phenacyl halides were used with the objective of getting a variety of quaternary ammonium salts of 5- bromonicotinic acid derivatives as multipurpose biologically active compounds. Twelve quaternary ammonium salts of 5-bromonicotinic acid have been synthesized and tested for cytotoxicity, antibacterial and antifungal activities. These c

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41

A., SIVARAMI REDDY, and JAYARAMA REDDY S. "Electrochemical Reductions. Cyclic Voltammetry and Chronopotentiometry of some Substituted Phenacyl Bromides." Journal of India Chemical Society Vol. 63, Aug 1986 (1986): 752–56. https://doi.org/10.5281/zenodo.6296864.

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Electrochemical Laboratories, Sri Venkateswara University, Tirapati-617 602 <em>Manuscript received 7 February 1983, revised 11 July 1986, accepted 2 August 1986</em> The electrochemical reductions of <em>p</em>-bromo-, <em>p</em>-chloro- and <em>p</em>-nitro-phenacyl bromides have been carried out using the techniques of cyclic voltammetry and chronopotentiometry at hanging mercury drop electrode. Comparative account of their behaviour in different supporting electrolytes studied is presented. Reduction mechanism is discussed. The kinetic parameters such as forward rate constan

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42

Chinnayya, Setti S., Gowd V. Suresh, B. V. Durga Rao, N. Krishna Rao, and Lakshman Shaik. "DBU promoted Efficient Bioactive Synthesis of Novel 1-(2-methyl-1, 5-diphenyl-1H-pyrrol-3-yl) ethanone derivatives." Research Journal of Chemistry and Environment 26, no. 4 (2022): 72–85. http://dx.doi.org/10.25303/2604rjce7285.

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In an attempt to find new class of antibacterial agents, 1-(2-methyl-1,5-diphenyl-1H-pyrrol-3-yl)ethanone (4a –4j) were successfully synthesized from phenacyl bromide ,substituted aryl amine and aetylacetone in the presence of organic base such as DBU promoted in ethanol under reflux. The synthesized compounds were evaluated by spectroscopic techniques such as 1HNMR, 13CNMR and LCMS and elemental analysis. Derivatives were also evaluated for their antibacterial activity.

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43

Martin, Arputharaj E., and Karnam J. Rajendra Prasad. "Synthetic Utility of 1-Hydroxycarbazole-2-carbaldehydes - Syntheses of Furo-, Oxazino- and Pyranocarbazoles." Collection of Czechoslovak Chemical Communications 72, no. 11 (2007): 1579–90. http://dx.doi.org/10.1135/cccc20071579.

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Reaction of 1-hydroxycarbazole-2-carbaldehydes 1 with phenacyl bromide yielded 2-benzoyl-10H-furo[2,3-a]carbazoles 2, whereas the reaction with ethyl bromoacetate yielded 1-oxo-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazole-4-carbaldehyde (4). The reaction of 1 with ethyl acetoacetate and also with diethyl malonate yielded the pyranocarbazoles 6 and 7, respectively. All the products were characterized by spectral and analytical means. Plausible mechanisms of product formation are proposed.

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44

Kanakaraju, Sankari, Bethanamudi Prasanna, and G. V. P. Chandramouli. "An Efficient One-Pot Three-Component Synthesis of Novel Sulfanyl Tetrazoles Using Ionic Liquids." Journal of Chemistry 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/104690.

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An efficient, simple, and environmentally benign method for the synthesis of novel sulfanyl tetrazoles has been achieved by one-pot three-component reaction of phenacyl bromides/3-(2-bromoacetyl)coumarins with KSCN and NaN3using [Bmim]BF4ionic liquid. It could be reused and recycled for four runs without significant loss of product yield.

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45

Nataliya, Demchenko, Suvorova Zinaida, Fedchenkova Yuliia, et al. "Synthesis and antibacterial activity of 3-arylaminomethyl-1-(2-oxo-2-arylethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a] azepin-1-ium bromides and aryl-(4-R1-phenyl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[cd]azulen-1-ylmethyl)-amines." ScienceRise: Pharmaceutical Science, no. 6(34) (December 30, 2021): 51–57. https://doi.org/10.15587/2519-4852.2021.249480.

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<strong>The aim </strong>of this work is to develop methods of synthesis of 3-arylaminomethyl-1-(2-oxo-2-arylethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-1-ium bromides and aryl-(4-R<sup>1</sup>-phenyl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[cd]azulen-1-ylmethyl)-amines and to study their antimicrobial activity against strains of gram-positive and gram-negative bacteria as well as yeast fungi. <strong>Materials and methods. </strong><sup>1</sup>Н NMR spectra were recorded on Bruker 400 spectrometer operating at frequency of 400 MHz. Antimicrobial activity of the comp

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46

Kumar, Mahesh, K. M. Basavaraja, Manjunatha Harihara Mathada, and M. Mylarappa. "Synthesis and Antimicrobial activity of 1-(3-amino-5-chloro-2, 3-dihydro-1-benzofuran-2-yl) ethan-1-one [2, 1-b]-furan and their derivatives." Research Journal of Chemistry and Environment 26, no. 11 (2022): 185–96. http://dx.doi.org/10.25303/2611rjce1850196.

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The current study is focused on the conversion of 2- chlorosalicylaldehyde into its oxime which was then converted into 5-chloro-2-hydroxy-benzonitrile 1, a key starting material for the present synthetic work. The nitrile 1 on reaction with chloroacetone/phenacyl bromide/4-chlorophenacyl bromide in anhydrous acetone and potassium carbonate gave 2-acyl-3- amino-5-chlorobenzofuran (2a-c). Acetylation of compounds 2a-c furnishes 2-acyl-3acetamido-5- chlorobenzofuran (3a-c). Compounds 3a-c on further treatment with hydrazine hydrate undergo ring closure producing 3-amino-8- chloro-2, 4-dimethyl-3

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47

Shahad, Muhammad, and Ahmed Ahmed. "Synthesis, characterization and photostability study of triazole derivatives." GSC Advanced Research and Reviews 9, no. 2 (2021): 066–72. https://doi.org/10.5281/zenodo.5763560.

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heterocyclic derivative contain triazole ring was synthesized and characterized the product and their structures by infrared spectroscopy, <sup>1</sup>H-NMR, <sup>13</sup>C-NMR and instrumental techniques. Compound (4) was synthesized by reacting of Schiff base (3) with an three moles of alkyl halide (<em>p</em>-phenyl phenacyl bromide). Final product played an important role in photostabilizer of polymer (PS), and showed the activity as a photostabilizer when exposed to UV light (300 hours).

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48

Dumitraşcu, Florea, Mino R. Caira, Constantin Drăghici, Miron Teodor Căproiu, and Andrei Bădoiu. "Helical chirality of 1-phenacyl-1,10-phenanthrolinium bromides." Journal of Chemical Crystallography 34, no. 9 (2004): 577–83. http://dx.doi.org/10.1023/b:jocc.0000044083.04054.9d.

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49

Ambhore, Ajay N. "Eco-friendly Synthesis of Some New Benzylidene-iminothiazolyl-pyrazol-3-ol Derivatives via One-Pot Multicomponent Reaction and Evaluation of Antioxidant Activities." Asian Journal of Organic & Medicinal Chemistry 6, no. 4 (2021): 264–69. http://dx.doi.org/10.14233/ajomc.2021.ajomc-p348.

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In present work, one-pot multicomponent reaction (MCR) route for the synthesis of benzylideneiminothiazolyl- pyrazol-3-ol derivatives (5a-p) by reacting ethyl cyanoacetate (1), substituted benzaldehyde (2a-c), thiosemicarbazide (3) and substituted phenacyl bromide (4a-g). This reaction proceeds by using bleaching earth clay (BEC) (pH 12.5) in PEG-400 as a green reaction media. All the synthesized compounds were characterized by IR, 1H NMR, 13C NMR and mass spectral data. The pharmacological investigation of the synthesized compounds suggest that most of them showed good antioxidant activity.

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Abdel-Wahab, Bakr F., Ahmed F. Mabied, James C. Fettinger, Ahmed H. E. Hassan, and Abdelbasset A. Farahat. "2-((5-(5-Methyl-2-phenyl-1H-imidazol-4-yl)-1,3,4-oxadiazol-2-yl)thio)-1-phenylethan-1-one." Molbank 2023, no. 2 (2023): M1666. http://dx.doi.org/10.3390/m1666.

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A promising imidazole compound was synthesized through the following route. The reaction of 5-methyl-2-phenyl-1H-imidazole-4-carbohydrazide (1) with carbon disulfide and potassium hydroxide in ethanol (80%) afforded potassium salt (2). Refluxing of (2) with phenacyl bromide (3) in ethanol/water (1:1) gave 2-((5-(5-methyl-2-phenyl-1H-imidazol-4-yl)-1,3,4-oxadiazol-2-yl)thio)-1-phenylethan-1-one (4) in a 76% yield. The structure of the title heterocycle (4) was confirmed by single-crystal X-ray diffraction and nuclear magnetic resonance.

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