Results 111 to 120 of about 4,154 (224)

Eco-friendly synthesis, physicochemical studies, biological assay and molecular docking of steroidal oxime-ethers [PDF]

open access: yes
The aim of this study was to report the synthesis of biologically active compounds; 7-(2′-aminoethoxyimino)-cholest-5-ene (4), a steroidal oxime-ether and its derivatives (5, 6) via a facile microwave assisted solvent free reaction methodology.
Alam, Mahboob, Lee, Dong-Ung
core   +1 more source

A Convenient and Efficient Protocol for the Synthesis of 1,3,5-Triaryl-2-pyrazolines in Acetic Acid under Ultrasound Irradiation

open access: yesE-Journal of Chemistry, 2012
1,3,5-Triaryl-2-pyrazolines were synthesized in acetic acid in high yields within 60-180 min under ultrasound irradiation at room temperature.
Zhi-Ping Lin, Ji-Tai Li
doaj   +1 more source

An improved synthesis of 1,3,5-triaryl-2-pyrazolines in acetic acid aqueous solution under ultrasound irradiation

open access: yesBeilstein Journal of Organic Chemistry, 2007
BackgroundPyrazoline derivatives have been found to possess a broad spectrum of biological activities. Among various pyrazoline derivatives, 2-pyrazolines seem to be the most frequently studied. A variety of methods have been reported for the preparation
Ji-Tai Li, Xiao-Hui Zhang, Zhi-Ping Lin
doaj   +1 more source

^(13)C, ^1H, and ^2H NMR Observation of Trideuterated Cyclopropylmethyl-Cyclobutyl Carbocation: A Configurationally Stable Species [PDF]

open access: yes, 1984
With the increasing power and sophistication of experimental and theoretical methods for assigning chemical structures, it seems almost incredible that the structure of any reasonably stable organic entity with a small number of carbons could remain ...
Brittain, William J.   +2 more
core  

Heterociklusos vegyületek szelektív szintézise telítetlen ketonok reakcióival = Selective synthesis of heterocyclic compounds by the reactions of unsaturated ketones [PDF]

open access: yes, 2009
Kalkonok, (3-kumarinil)-kalkonok, valamint dehidroecetsavból nyert telítetlen ketonok és hidrazinok reakciójával új 2-pirazolinokat szintertizáltunk. E vizsgálatok körében kiemelendők a (karboxi-fenil)-hidrazinok és ezen telítetlen ketonok erekakciónak ...
Jekö, József, Lévai, Albert
core  

Synthesis, structure characterization, DNA binding, and cleavage properties of mononuclear and tetranuclear cluster of copper(II) complexes

open access: yes, 2015
Two copper(II) complexes, cluster 1, and mononuclear 2, have been synthesized by reacting acetylacetone and benzohydrazide (1:1 ratio for 1 and 1:2 ratio for 2) with CuCl2 in a methanol solution.
Hasanzade, Naime   +3 more
core   +1 more source

Design, synthesis, characterization and computational docking studies of novel sulfonamide derivatives [PDF]

open access: yes
This study reports three novel sulfonamide derivatives 4-Chloro-N-[(4-methylphenyl) sulphonyl]-N-propyl ben- zamide (1A), N-(2-hydroxyphenyl)-4-methyl benzene sulfonamide (1B) and 4-methyl-N-(2-nitrophenyl) ben- zene sulfonamide (1C).
Ashiq, Ayesha   +7 more
core   +1 more source

Development of novel antimicrobial agents: investigating the efficacy of 1,3,5-Triphenyl-2-pyrazoline derivatives [PDF]

open access: yesHealth Science Monitor
Background & Aims: In this research, a novel series of heterocyclic compounds containing pyrazoline nuclei was synthesized in two steps. Materials & Methods: In the first step, chalcones were prepared using the Claisen-Schmidt reaction between ...
Sevda Afzal-Ahangaran   +2 more
doaj  

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