16795-37-2Relevant academic research and scientific papers
A regioselective and convenient one-pot multicomponent synthesis of 9-amino-3,5-diaryl-4,9-dihydro-5H-[1,2,4]triazolo[5,1-c][1,2,4]triazepine-8-thiol
Moustafa, Amr Hassan,Amer, Amer Anwar
, p. 1102 - 1109 (2017)
An efficient and environment-friendly procedure for the synthesis of a new series of nitrogen bridge-head [1,2,4]triazolo[5,1-c][1,2,4]triazepine derivatives through one-pot three-component reaction of polyfunctional triazole with aromatic aldehydes and acetophenone derivatives using alcoholic sodium hydroxide solution. The same new products were prepared in classical route through reaction of triazole with the corresponding chalcones under the same conditions.
Experimental and Theoretical Studies of the Spectroscopic Properties of Chalcone Derivatives
Pietrzak, Marek,Józefowicz, Marek,Bajorek, Agnieszka,Heldt, Janina R.
, p. 537 - 549 (2017/03/07)
Newly synthesized, differently substituted chalcones (1,3-diaryl-2-propen-1-ones) have been studied using steady-state and time-resolved techniques combined with quantum-chemical modelling. To explore spectroscopic structure - property relationships the substituent (acceptor moiety) was chosen according to systematic variation in the Hammett parameter. It was shown that photophysical properties of the studied donor-acceptor (D-A) molecules can be predicted in terms of a simple model from the properties of individual chromophores (composite-model of decoupled moieties: donor (D) and acceptor (A)). The results of spectroscopic measurements also indicate that for investigated D-A fluorophores in medium-polar solvent, the initially populated, locally excited (LE) state (where the fundamental role plays donor moiety (D*-A)) reacts further to produce intramolecular charge transfer (ICT) state. Additionally, the experimental absorption (Mge) and fluorescence (Meg) transition dipole moments were calculated on the basis of spectroscopic data and compared with results of our quantum-chemical calculations. The absorption transition dipole moment was found to vary linearly with the Hammett substituent coefficient (σ).
Preparation and biological evaluation of novel pyrimidines from novel chalcones
Jyothi,Venkatesh
, p. 1437 - 1442 (2013/02/23)
Pyrimidines are the parent substances of a large group of heterocyclic compounds and play a vital role in many biological processes, as found in nucleic acids, several vitamins, coenzymes, purines and possess therapeutic activities like antimicrobial, anti-inflammatory, anticancer, antiviral, antitubercular and antimalarial activities. In the present study an attempt is made to synthesize pyrimidines from novel chalcones which provide an easy route of synthesis and chalcones themselves possess antimicrobial activity. All these compounds were characterized by means of their IR, 1H NMR, 13C NMR, and mass spectral data. These compounds were evaluated for antimicrobial activity by cup plate method.
