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Relevant bibliographies by topics / 3-Dibromo-5

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Academic literature on the topic '3-Dibromo-5'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "3-Dibromo-5"

1

Capon, RJ, and JK Macleod. "Two Epimeric Dibromo Nitriles From the Australian Sponge Aplysina laevis." Australian Journal of Chemistry 40, no. 2 (1987): 341. http://dx.doi.org/10.1071/ch9870341.

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Two dibromo nitriles, (1′R,5′S,6′S)-2-(3′,5′-dibromo-1′,6′-dihydroxy-4′-oxocyclohex-2′- enyl) acetonitrile (5) and the (l′R,5′R,6′S) epimer (6), possessing antimicrobial activity, have been isolated from the sponge Aplysina laevis (Carter). Cometabolites (+)-aeroplysinin-1 (1) and the dibromo ketone (2) were also identified. Structures (5) and (6) were assigned on the basis of spectroscopic evidence and synthesis from (1).

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2

Komal, Savaliya, and S. Patel Pankaj. "Synthesis and Biological evaluation Of Some New Benzoyl Pyrazole Derivatives bearing a 6,8-Dibromo-2-methylquinazolin-4-one Moiety." Der Pharma Chemica 14, no. 2 (2022): 6. https://doi.org/10.4172/0975-413X.14.2.1-5.

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A new series of 3-[4-(1-benzoyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one have been synthesized by the condensation reaction of 6,8-dibromo-3-{4-[5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl]phenyl}-2-methylquinazolin-4-one with benzoyl chloride by using pyridine as a solvent. The intermediate have been synthesized by refluxation of 6,8-dibromo-3-{4-[3- (substitutedphenyl)prop-2-enoyl]phenyl}-2-methylquinazolin-4-one (0.01M) and 99% hydrazine hydrate (0.015M) by using ethanol (50ml) as a solvent with various aldehydes. The chemical structures

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3

Savaliya, Komal, and S. Patel Pankaj. "Synthesis and Biological evaluation Of Some New Benzoyl Pyrazole Derivatives bearing a 6,8-Dibromo-2-methylquinazolin-4-one Moiety." Der Pharma Chemica 14, no. 2 (2022): 6. https://doi.org/10.5281/zenodo.13353950.

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A new series of 3-[4-(1-benzoyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one have been synthesized by the condensation reaction of 6,8-dibromo-3-{4-[5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl]phenyl}-2-methylquinazolin-4-one with benzoyl chloride by using pyridine as a solvent. The intermediate have been synthesized by refluxation of 6,8-dibromo-3-{4-[3- (substitutedphenyl)prop-2-enoyl]phenyl}-2-methylquinazolin-4-one (0.01M) and 99% hydrazine hydrate (0.015M) by using ethanol (50ml) as a solvent with various aldehydes. The chemical structures

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4

Percino, Teresa Mancilla, Marisol López Martínez та José Luis León. "Diastereoselective Synthesis of β-Hydroxyketones". Natural Product Communications 3, № 3 (2008): 1934578X0800300. http://dx.doi.org/10.1177/1934578x0800300305.

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The diastereoselective synthesis of 2,4-dibromo-3-hydroxy-1,3-diphenylbutan-1-one [4(a-a’)]; 2,4-dibromo-3-hydroxy-1,3-di [( p-chloro)phenyl]butan-1-one [5(a-a’)] and 2,4-dibromo-3-hydroxy-1,3-di[( p-phenyl)phenyl]butan-1-one [6(a-a’)] using (N→B) phenyl( N-methyliminodiacetate- O,O',N)borane and n-BuLi is reported. The mixture of these compounds was characterized by 1H, 13C NMR, HETCOR, COSY and infrared spectroscopy and mass spectrometry.

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5

(Miss), A.M. DAVE, N. BHATT K., K. UNDAVIA N., and B. TRIVEDI P. "Synthesis of 1-(Arylideneaminoethyl)-2-phenyl-4-(3',5'-dibromo-2" -hydroxy benzylidene )imidazolin-5-ones." Journal of Indian Chemical Society Vol. 64, Jun 1987 (1987): 348–50. https://doi.org/10.5281/zenodo.6238210.

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University Department of Chemistry, Bhavnagar University, Bhavnagar-364 002 <em>Manuscript received 12 January 1987, accepted 19 May 1987</em> 1-(Aryl ideneam ino ethyl)-2-phenyl-4-(3',5'-dibromo-2'-hydroxyhenzylidene)imidazolin-5-ones were synthesised by the condensation of 2-pheny1-4-(3',5'-dibromo-2'-hydroxybenzylidene)oxazoiin-5-one and ethylenediamine in pyridine, followed by reaction with the appropriate aldehyde in ethanol containing a few drops of glacial acetic acid. The compounds were screened for their antibacterial activity.

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6

D., H. Vyas, D. Tala S., F. Dhaduk M., D. Akbari J., and S. Joshi H. "Synthesis, antitubercular and antimicrobial activities of some new pyrazoline and isoxazole derivatives." Journal of Indian Chemical Society Vol. 84, Nov 2007 (2007): 1140–44. https://doi.org/10.5281/zenodo.5824658.

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Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India <em>E-mail </em>: drhsjoshi49@gmail.com <em>Manuscript received 23 November 2006, revised 6 June 2007, accepted 17 August 2007</em> Cyclocondensation of hydrazine hydrate with (2<em>E</em>)-1-(3,5 dibromo-4-methoxyphenyl)-3-aryl-prop-2-en-1-ones (1a-j) in glacial acetic acid afford corresponding 1-acetyl-3-(3,5-dibromo-4-methoxyphenyl)-5-aryl-4,5-dihydro-1<em>H</em>-pyrazoles (2a-j). While the compounds 1a-j on reaction with hydroxylamine hydrochloride in presence of acetic acid and sodium acetate to give 3-(3,

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7

Wang, Zi Xuan, Yu Chuan Li, Hong Xu Niu, Hong Xia Yu, and Si Ping Pang. "Synthesis and Crystal Structures of Dibromo-Triazoles and their Amination." Materials Science Forum 1001 (July 2020): 93–103. http://dx.doi.org/10.4028/www.scientific.net/msf.1001.93.

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Triazole heterocyclic compounds have a wide range of applications in the fields of medicine, pesticide, energetic materials, etc. Introducing halogen atoms and amino groups into the triazole ring can obtain a series of important intermediates that can be further modified. 4,5-Dibromo-1-H-1,2,3-triazole (5), 3,5-dibromo-1-H-1,2,4-triazole (6), 3,5-dibromo-4-H-1,2,4-triazole (7) and 1-amino-4,5-dibromo-1,2,3-triazole (8), 2-amino-4,5-dibromo-1,2,3-triazole (9) and 1-amino-3,5-dibromo-1,2,4-triazole (10) were synthesized through the bromination and amination of 1,2,3-triazole (1), 1-amino-1,2,3-t

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8

Shaala, Lamiaa A., Sherief I. Khalifa, Mostafa K. Mesbah, Rob W. M. Van Soest, and Diaa T. A. Youssef. "Subereaphenol A, a new Cytotoxic and Antimicrobial Dibrominated Phenol from the Red Sea Sponge Suberea Mollis." Natural Product Communications 3, no. 2 (2008): 1934578X0800300. http://dx.doi.org/10.1177/1934578x0800300222.

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An investigation of the sponge Suberea mollis collected at the Egyptian Red Sea coast afforded a new cytotoxic and antimicrobial dibrominated phenol, subereaphenol A (1), together with the previously reported compounds 2-(3′,5′-dibromo-2′-hydroxy-4′-methoxyphenyl)acetamide (2), dibromoverongiaquinol (3), bromochloroverongiaquinol (4), and 2-(3′,5′-dibromo-4′-ethoxy-1′-hydroxy-4′-methoxy-2′,5′-cyclohexadien-1-yl)acetamide (5). The structure of the compounds was determined by a combination of 1D and 2D NMR techniques and High-resolution mass spectral determinations. Complete and new NMR data for

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9

Parvez, Masood, SM Humayan Kabir, Ted S. Sorensen, Fang Sun та Brian Watson. "Assigning structures to diastereomeric aliphatic α,α'-dibromo ketones". Canadian Journal of Chemistry 80, № 4 (2002): 413–17. http://dx.doi.org/10.1139/v02-033.

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X-ray crystal structures are reported for two symmetrical aliphatic α,α'-dibromo ketones: a meso diastereomer of 3,5-dibromo2,2,6,6-tetramethylheptan-4-one, and a rac isomer of 4,6-dibromo2,2,3,3,7,7,8,8-octamethylnonan-5-one. Using these secure assignments and a previously confirmed structure for the diastereomers of 2,4-dibromopentan-3-one, we show in this study that gas-liquid chromatography (GLC) retention times (meso > rac) can be used to confidently assign the diastereomers for a range of symmetrical and unsymmetrical aliphatic α,α'-dibromo ketones. 1H NMR chemical shifts for the &g

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10

Wilkie, JS, and KN Winzenberg. "Preparation of Some 9-Hydroxy-2-oxaspiro[4.5]dec-8-ene-1,7-dione Derivatives by Reductive Alkylation of 3,5-Dimethoxybenzoic Acid With 1,2-Dihaloalkane and Oxiran Electrophiles." Australian Journal of Chemistry 42, no. 8 (1989): 1207. http://dx.doi.org/10.1071/ch9891207.

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Lithium in liquid ammonia mediated reductive alkylation of 3,5-dimethoxybenzoic acid (3) with 1,2-dibromoethane, or 1-bromo-2-chloroethane, followed by acid hydrolysis, afforded 9-hydroxy-2-oxaspiro[4.5]dec-8-ene-1,7-dione (1a). Reductive alkylation of (3) with unbranched 1,2-dibromoaikanes (5b-g), 1,2-dibromo-3-methylbutane and 1,2-dibromo-3,3-dimethylbutane gave 3-alkyl-9-hydroxy-2-oxaspiro[4.5]dec-8-ene-1,7-dione derivatives (1b-i) in moderate yields with the exception of (1i). The major product of the last reaction was 1-(2-bromo-3,3- dimethylbutyl )-3-hydroxy-5-oxocyclohex-3-ene-1-carboxy

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Book chapters on the topic "3-Dibromo-5"

1

Pardasani, R. T., and P. Pardasani. "Magnetic properties of Ni(III) ion-pair complex having 1-(3′,5′-dibromo-benzyl)pyridinium cation and bis(maleonitriledithiolato)nickalate anion." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 7. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65895-6_313.

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