Results 21 to 30 of about 4,108 (208)

Synthesis of Some substituted (Pyrazolines) Derived From Benzotriazole [PDF]

Kirkuk Journal of Science, 2016
In this paper , a number of heterocyclic compounds with five-memberd pyrazolines were prepared , the ester compound (1) was synthesized from the reaction of benzotriazole with ethyl chloroacetate , the hydrazide (2) was prepared from the reaction of ...
Fariq Salah Ahmed, Ayad S. Hameed, Khalid M. Mohammed   +2 more
doaj   +1 more source

Green Synthesis and In Vitro Biological Evaluation of Heteroaryl Chalcones and Pyrazolines of Medicinal Interest

Journal of Chemistry, 2013
Pyrazolines are well known and important nitrogen containing 5-membered heterocyclic compounds. In the present investigation, a series of various heteroaryl chalcones and pyrazolines were synthesized by condensing formylquinolines with diverse ketones ...
Vishal Banewar
doaj   +1 more source

X-ray analysis of different starch granules [PDF]

, 1995
Crystal sizes and lattice distortion parameters for root, pulse and cereal starch granules have been determined using observed X-ray diffraction reflections by Fourier method.
Ali, S. Z., Singh, V., Somashekar, R., Somashekarappa, H., Urs, R. G.   +4 more
core   +1 more source

Synthesis, spectral characterization and biological evaluation of 1-thiocarbamoyl-3-phenyl-5-hydroxy-5-(-2-pyridyl)-4-pyrazolines via Michael addition

Journal of Saudi Chemical Society, 2016
A series of 1-thiocarbamoyl-3-phenyl-5-hydroxy-5-(2-pyridyl)-4-pyrazolines derivatives have been synthesized using sodium acetate as a catalyst. The spectral characterization and structure of 1-thiocarbamoyl-3-phenyl-5-hydroxy-5-(2-pyridyl)-4-pyrazolines
D. Chinnaraja, R. Rajalakshmi, V. Latha, H. Manikandan   +3 more
doaj   +1 more source

Synthesis of Non-Racemic Pyrazolines and Pyrazolidines by [3+2] Cycloadditions of Azomethine Imines

Molecules, 2017
Asymmetric [3+2] cycloadditions of azomethine imines comprise a useful synthetic tool for the construction of pyrazole derivatives with a variable degree of saturation and up to three stereogenic centers.
Franc Požgan, Hamad Al Mamari, Uroš Grošelj, Jurij Svete, Bogdan Štefane   +4 more
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(E)-(1-(4-Ethoxycarbonylphenyl)-5-(3,4-dimethoxyphenyl)-3-(3,4-dimethoxystyryl)-2-pyrazoline: Synthesis, Characterization, DNA-Interaction, and Evaluation of Activity Against Drug-Resistant Cell Lines

Molbank, 2020
(E)-1-(4-Ethoxycarbonylphenyl)-5-(3,4-dimethoxyphenyl)-3-(3,4-dimethoxystyryl)-2-pyrazoline was synthesized via the cyclization reaction between the monocarbonyl curcuminoid (2E,6E)-2,6-bis(3,4-dimethoxybenzylidene)acetone and ethyl hydrazinobenzoate in ...
Dimitris Matiadis, Barbara Mavroidi, Angeliki Panagiotopoulou, Constantinos Methenitis, Maria Pelecanou, Marina Sagnou   +5 more
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Design, Synthesis, and Anti-mycobacterial Evaluation of New 3,5-Disubstituted-pyrazole-1-carbothioamides

Indonesian Journal of Chemistry, 2022
Two series of new 3,5-disubstituted-pyrazole-1-carbothioamides (4a-f and 5a-e) were designed and synthesized through condensation reaction between chalcones and thiosemicarbazides under alkaline condition via cyclocondensation reaction.
Kok Tong Wong, Hasnah Osman, Thaigarajan Parumasivam, Muhammad Solehin Abd Ghani, Mohd. Zaheen Hassan, Unang Supratman, Mohamad Nurul Azmi Mohamad Taib   +6 more
doaj   +1 more source

Preparation of New 2,3-Diphenylpropenoic Acid Esters – Good Yields Even for the More Hindered Z Isomers [PDF]

, 2004
The potassium salt of E- and Z-2,3-diphenylpropenoic acids prepared in situ could be esterified efficiently in DMSO with the appropriate alkyl halides at room temperature.
Barry, Bergens, Fischer, István Pálinkó, Károly Felföldi, Lee, László Boros, Ogliaruso   +7 more
core   +2 more sources

Synthesis and Pharmacological Evaluation of Some Phenylpyrazolo Indoquinoxaline Derivatives

E-Journal of Chemistry, 2011
Indoloquinoxalin was fused with 2,3 diphenyl quinoxaline by a methylene bridge which was then allowed for acetylation. The acetylated product was made to react with different aromatic aldehydes to give chalcones.
CH. Sridevi, K. Balaji, A. Naidu
doaj   +1 more source

Synthesis, crystal structure and Hirshfeld surface analysis of 4-[3-(4-hydroxyphenyl)-4,5-dihydro-1H-pyrazol-5-yl]-2-methoxyphenol monohydrate

Acta Crystallographica Section E: Crystallographic Communications, 2019
In the title pyrazoline derivative, C16H16N2O3·H2O, the pyrazoline ring has an envelope conformation with the substituted sp2 C atom on the flap. The pyrazoline ring makes angles of 86.73 (12) and 13.44 (12)° with the trisubstituted and disubstituted ...
Linh Duong Khanh, My Hanh Trinh Thi, Thuy Quynh Bui Thi, Trung Vu Quoc, Vuong Nguyen Thien, Luc Van Meervelt   +5 more
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