(E)-N-Substitutedbenzylidene-4-Methoxyanilines as Insect Antifeedants

Some substituted aryl Schiff’s bases [(E)-N-substitutedbenzylidene-4-methoxyanilines] have been prepared and their purities were checked by their physical constants and spectroscopic data reported earlier. The insect antifeedant activities of these Schiff’s bases have been studied by leaf-discs bio assay method using 4th instar larvae AchoeaJanata L.

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Insect Antifeedant Potent Quinoxalines

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.41.82 ◽

2014 ◽

Vol 41 ◽

pp. 82-87 ◽

Cited By ~ 1

Author(s):

K. Lakshmanan ◽

K.G. Sekar ◽

V. Sathiyendiran ◽

I. Muthuvel

Keyword(s):

Spectroscopic Data ◽

Assay Method ◽

Leaf Discs ◽

Physical Constants ◽

Bio Assay

Some 6-substituted aryl quinoxalines have been prepared and their purities were checked by their physical constants and spectroscopic data reported earlier. The insect antifeedant activities of these quinolones were studied by leaf-discs bio assay method using 4th instar larvae AchoeaJanata L.

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Insect Antifeedant Potent Halogen Substituted Phenyl Chalcones

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.20.67 ◽

2013 ◽

Vol 20 ◽

pp. 67-73 ◽

Cited By ~ 1

Author(s):

R. Sundararajan ◽

R. Arulkumaran ◽

S. Vijayakumar ◽

D. Kamalakkannan ◽

R. Suresh ◽

...

Keyword(s):

Spectroscopic Data ◽

Aldol Condensation ◽

Leaf Disc ◽

Solvent Free ◽

Assay Method ◽

Antifeedant Activity ◽

Sulfated Titania ◽

Substituted Benzaldehydes ◽

Bio Assay

Some 2′,3′,4′-trichlorophenyl chalcones [(E)-1-(2,3,4-trichlorophenyl)-3-(substituted phenyl)-2-propen-1-ones] have been synthesised using sulfated Titaniacatalyzed solvent-free aldol condensation between 2,3,4-trichloroacetophenone and substituted benzaldehydes. The purities of synthesised chalcones were checked by their analytical, physical and spectroscopic data reported in literature. The insect antifeedant activities of these chalcones have been studied using 4th instar larvae Achoea Janata L by castor leaf disc bio-assay method. The chloro substituted chalcones shows significant insect antifeedant activity.

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Perchloric acid catalyzed condensation of amine and aldehydes: Synthesis and antibacterial activities of some aryl (E)-imines

Annales Universitatis Mariae Curie-Sklodowska sectio AA – Chemia ◽

10.2478/umcschem-2013-0016 ◽

2014 ◽

Vol 69 (1-2) ◽

Author(s):

P. Mayavel ◽

K. Thirumurthy ◽

S. Dineshkumar ◽

G. Thirunarayanana

Keyword(s):

Perchloric Acid ◽

Antibacterial Activities ◽

Schiff’S Bases ◽

Physical Constants ◽

Schiff's Bases ◽

Aryl Amines ◽

Acid Catalyzed ◽

Substituted Benzaldehydes

AbstractA series of Schiff’s bases (aryl E-imines) have been derived from the perchloric acid catalyzed condensation of aryl amines and substituted benzaldehydes. The yield of the Schiff’s bases are more than 80%. The synthesized Schiff’s bases are characterized by their physical constants, analytical and spectroscopical data. The antibacterial activities of these Schiff’s bases have been studied using Bauer-Kirby method.

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Insect Antifeedant Potent Unsaturated 1,3-Oxazine-2-Amines

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.23.66 ◽

2013 ◽

Vol 23 ◽

pp. 66-81

Author(s):

Ganesamoorthy Thirunarayanan ◽

V. Renuka ◽

K.G. Sekar ◽

K. Lakshmanan ◽

K. Anbarasu

Keyword(s):

Microwave Irradiation ◽

Spectroscopic Data ◽

Solvent Free ◽

Leaf Discs ◽

Physical Constants

Insect antifeedant activities of some halo substituted aryl 1,3-oxazine-2-amines have been measured using 4th instar larvae Achoea janata L by castor leaf discs-Dethler’s method. The highly halo substituted oxazine amines have shown good insect antifeedant activities. The 1,3-oxazine amines have been synthesised by greener method by solvent-free cyclization of aryl enones with urea under microwave irradiation. The yields of the oxazines were more than 80%. The synthesised oxazines were characterized by their physical constants, analytical and spectroscopic data.

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Viscoelastic properties of a homologous series of nematic liquid crystalline Schiff's bases

Journal de Physique ◽

10.1051/jphys:019840045080134700 ◽

1984 ◽

Vol 45 (8) ◽

pp. 1347-1360 ◽

Cited By ~ 13

Author(s):

J.P. van der Meulen ◽

R.J.J. Zijlstra

Keyword(s):

Homologous Series ◽

Viscoelastic Properties ◽

Liquid Crystalline ◽

Schiff’S Bases ◽

Schiff's Bases

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Green Synthesis, Characterization, DPPH and Ferrous Ion-chelating (FIC) Activity of Tetrakis-Schiff’s Bases of Terephthalaldehyde

Letters in Drug Design & Discovery ◽

10.2174/1570180815666180531101404 ◽

2019 ◽

Vol 16 (3) ◽

pp. 249-255

Author(s):

Momin Khan ◽

Umar Ali ◽

Anis Ur Rahman ◽

Muhammad Ibrahim ◽

Abdul Hameed ◽

...

Keyword(s):

Antioxidant Activities ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Aromatic Aldehydes ◽

Ferrous Ion ◽

Future Research ◽

Scavenging Activity ◽

Schiff’S Bases ◽

Schiff's Bases ◽

Antioxidant Agents

Background: The role of small molecules as antioxidants to prevent the oxidation of other molecules and inhibit them from radical formation is the area of much interest to cure disease especially cancer. Moreover, the antioxidants play important role as stabilizers to prevent oxidation of fuels and lubricants. Methods: In the present study, fifteen tetrakis-Schiff’s bases derivatives (1-15) were synthesized and screened for their antioxidant activities. Compounds 1-15 were synthesized by continuous stirring of reaction mixture of 1,4-bis (hydrazonomethyl)benzene (1 mmol) with various substituted aromatic aldehydes (2 mmol) in distilled water using acetic acid as catalyst at room temperature for 2-10 min. Results: Our present study showed that all compounds are better ferrous ion-chelating agents except compound 1,4-bis((E)-((E)-(3,4-dimethoxybenzylidene)hydrazono)methyl)benzene (6) (IC50 = 329.26 ± 4.75 µM) which has slightly low activity than the standard EDTA (IC50 = 318.40 ± 5.53 μM). In addition, DPPH radical scavenging activity of eleven compounds showed higher activity than the standard. However, remaining four compounds showed comparable radical scavenging activity to the standard DPPH (IC50 = 257.77 ± 4.60 µM). Conclusion: The series of fifteen Schiff’s bases (1-15) were synthesized and evaluated as antioxidants. From both assays, it has been demonstrated that most of the tetrakis-Schiff’s bases have potential to serve as leads for the development of antioxidant agents for future research.

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