Synthesis and insect antifeedant activities of some substituted styryl 3,4-dichlorophenyl ketones

Electrochemical Reduction Potential Correlation of some Insect Antifeedant Potent 2-Phenothiazinyl Chalcones

“…The larvae of Achoea Janata L were reared as described on the leaves of castor Riclnus communls in the laboratory at the temperature range of 26 °C ±1 °C and a relative humidity of 75-85 %. The leaf -disc bioassay method [8,19] was used against the 4 th instar larvae to measure the antifeedant activity. The 4 th instar larvae were selected for testing because the larvae at this stage feed very voraciously.…”

“…Moraleda et al [4] have studied to found good correlation of α,β-unsaturated carbonyl compounds with half-wave potential, LUMO-HOMO energies with Hammett σ p constants. Chalcones possess a wide range of biological activities such as antibacterial [5], antifungal [6], antiviral [7], antifeedant [8], anticancer, antimalarial [9], antituberclosis [10], antiAIDS [11], antiplosmodial [12], anti-aids [9] and antioxidant [13] activities.…”

Preheated Fly-Ash Catalyzed Aldol Condensation: Efficient Synthesis of Chalcones and Antimicrobial Activities of Some 3-Thienyl Chalcones

“…Chalcones possess a wide range of biological activities such as antibacterial 32 , antifungal 32 , antiviral 33 , antifeedant 3,29 , anticancer 34 , antimalarial 35 , antituberclosis 28 , antiAIDS 36 and antioxidant 37 activities. These multipronged activities present in different chalcones are examined against respective microbes-bacteria's and fungi.…”

“…Numerous green catalysts such as fly-ash: sulphuric acid 1 , silica-sulphuric acid 10,11 anhydrous zinc chloride 12 , ground chemistry catalysts-grinding the reactants with sodium hydroxide 13 , aqueous alkali in lower temperature 14 , solid sulphonic acid from bamboo 15 , barium hydroxide 16 anhydrous sodium bicarbonate 17 , microwave assisted synthesis 18 , Fly-ash:water 2,19 , triphenylphosphite 20 , alkali earth metals 21 , KF/Al 2 O 3 22 and sulfated titania 23 and silicotungstic acid 24 have been reported for the synthesis of many number of organic compounds. Chalcones possess various multipronged activities such as antimicrobial 25 , antidepressants 26 , antiplasmodial 27 , anti-aids 28 and insect antifeedant activities 3,29 . In the present investigation, the authors wish to report a new green catalyst preheated fly-ash for efficient synthesizing chalcones by Crossed-Aldol condensation reaction.…”

Assessment of Substituent Effects and Antimicrobial Activities of some 2ʹ,5ʹ-Dimethyl Phenyl Chalcones

“…Chalcones possess various multipronged activities such as antimicrobial [7], antidepressants [26], antiplosmodial [27], anti-aids [28] and insect antifeedant activities [24,25]. In the present investigation, the authors have synthesized a series of some substituted styryl 2,5-dimethyl pheny chalcones, studied the spectral correlations and to evaluate the antimicrobial activities using Bauer-Kirby [29] method.…”