INTERNATIONAL JOURNAL OF CHEMICAL AND PHYSICAL SCIENCES

27-34

Authors: BHOYAR A. D. , PARIHAR R.T. , RAJPUT P.R

Condensation of 2-substituted-3,5-dichloroacetophenones 2a-c obtained from the condensation of 2-hydroxy-3,5-dichloroacetophenone 1 and benzoyl chloride were dissolved in NaOH , on treatment under baker venkatraman transformation in presence of KOH with pyridine gives 1-(2-hydroxy-3,5- dichlorophenyl )-3-substituted-1,3- propanedione 3a-c. Then converted into 3–aroyl-6,8-dichloroflavanones 4a-i by using different aromatic aldehyde in the presence of ethanol, Piperidine. The condensation of 4a-i with crystal of iodine in DMF solvent gives 3-aroylflavone 5a-i. The condensation of 5a-i and phenylhydrazinehydrochlorides, piperidine in DMF gives 4-aroyl-3,5- diarylpyrazoles 6a-i and condensation of 5a- i and hydroxylaminehydrochlorides gives 4- aroyl–3,5diarylisoxazoles 7a –i. The above compounds are screened for their antimicrobial activities and have been found to exhibit significant antibacterial and antifungal activities. The zones of inhibition measured in term of mm.

40-47

Authors: DESHMUKH R. R. , AROLKAR G. A., PARAB S. S.

Polarizabilty is the basis for dielectric properties of materials. Polymers are important class of materials as they are flexible and can be moulded to any complicated shape depending upon its application in electronic industry as an insulating material. Similarly surfaces properties particularly surface free energy of polymers play an important role in interfacial phenomenon. Polymers are widely used in packaging industry. Surface free energy of polymers has profound effect on various properties such as adhesion, wettability, printability etc, important from packaging applications. Surface free energy of polar polymers is higher as compared to non polar surfaces. Therefore, in the present investigation we try to understand the relation between dielectric properties and surface free energy in general and polar components of surface free energy in particular of variety of polymers. There is no relation between polar components of plasma processed polymers and dielectric constant.

54-59

Authors: PARIHAR R.T. , BHOYAR A. D. , RAJPUT P.R.

Condensation of 2-substituted-3,5-dichloroacetophenones 2a-b obtained from the condensation of 2-hydroxy-3,5-dichloroacetophenone 1 and benzoyl chloride were dissolved in NaOH , on treatment under baker venkatraman transformation in presence of KOH with pyridine gives 1-(2-hydroxy-3,5- dichlorophenyl )-3-substituted-1,3- propanedione 3a-b. Then converted into 3–aroyl-6,8-dichloroflavanones 4a-d by using different aromatic aldehyde in the presence of ethanol, Piperidine. The condensation of 4a-d and phenylhydrazinehydrochlorides, piperidine in DMSO gives 4-aroyl-Δ2- pyrazolines 5a-d.Condensation of 5a- d and hydroxylaminehydrochlorides gives 4-aroyl- Δ2- isoxazolines 6a –d. The above compounds are screened for their activities on horticultural plants and have been found to exhibit significant effects.