Sharda Mahavidyalaya

Parbhani, India

Sharda Mahavidyalaya

Parbhani, India
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Joshi V.M.,Science and Commerce College | Magar R.L.,Deogiri College | Throat P.B.,Dnyanopasak College | Tekale S.U.,Deogiri College | And 3 more authors.
Chinese Chemical Letters | Year: 2014

A simple, efficient, and environmentally benign method for the synthesis of 4H-chromene derivatives was developed using well ordered and recoverable amino functionalized silica gel as a base catalyst. The 4H-chromene derivatives were obtained in short time and excellent yield (87%-96%) by three component reaction of aldehydes, malononitrile and cyclic 1,3-diketones in water at 70 C. © 2013 Rajendra P. Pawar Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

Borgaonkar V.V.,Organic Synthesis Research Laboratory | Patil B.R.,Sharda Mahavidyalaya
Der Pharma Chemica | Year: 2014

A series of novel bis-ketimines were synthesized by the reaction of substituted hydroxypropiophenones and ethylene diamine by classical and solvent free microwave irradiation method. All the synthesized compounds were characterized by IR, 1HNMR, Mass data. The spectral data confirmed the structures of the synthesized compounds. All the synthesized products are screened for their in vitro antibacterial activity. The results signified that synthesized compounds have moderate to potent activities with respect to their appropriate reference standards and emerges as a potent antibacterial agents.

Borgaonkar V.V.,Dnyanopasak College | Patil B.R.,Sharda Mahavidyalaya
International Journal of ChemTech Research | Year: 2014

As imines occupy central place among medicinally important compounds, novel bioactive iodo substituted ketimines were synthesized by the condensation of iodo substituted hydroxy aromatic ketones and aliphatic/aromatic amines using solvent free microwave irradiation method. This method provides advantages such as environmental friendliness, short reaction time with excellent yield. All the synthesized products were screened for their antimicrobial activity. The results indicated that some synthesized compounds show good antibacterial as well as antifungal activities. © 2014, Sphinx Knowledge House. All Rights Reserved.

Magar R.L.,Deogiri College | Thorat P.B.,Deogiri College | Jadhav V.B.,Deogiri College | Tekale S.U.,Deogiri College | And 3 more authors.
Journal of Molecular Catalysis A: Chemical | Year: 2013

An efficient synthesis of 2-amino-4H-chromene derivatives is achieved via one pot three component coupling reaction of aromatic aldehyde, active methylene compound and activated phenol in presence of silica gel supported polyamine heterogeneous catalyst. The catalyst is easily prepared, highly stable, simple to handle and recycled for several times without significant loss of activity. © 2013 Elsevier B.V. All rights reserved.

Magar R.L.,Deogiri College | Thorat P.B.,Dnyanopasak College | Thorat P.B.,Deogiri College | Thorat V.V.,Deogiri College | And 2 more authors.
Chinese Chemical Letters | Year: 2013

The Biginelli-type compounds 4,5,8a-triarylhexahydropyrimido[4,5-d] pyrimidine-2,7(1H,3H)-diones were synthesized by a one-pot three-component reaction using sulfated tin oxide as a reusable catalyst. This method has the advantages of high yields, short reaction time, simple starting materials and reusability of catalyst for several times. © 2013 Ramin Ghorbani-Vaghei. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

Magar R.L.,Deogiri College | Thorat P.B.,Deogiri College | Waware J.L.,Deogiri College | More R.R.,Deogiri College | And 3 more authors.
Journal of Heterocyclic Chemistry | Year: 2015

In present work, we have described the use of polyamine solid supported GN3 as catalyst in organic transformations using 1H-indole-3-carbaldehyde. To the best of our knowledge, reports for the synthesis of chromen substituted at 3C position of indole are extremely rare in the literature. The polyamine functionalized immobilized silica (GN3) was found to be an excellent catalyst for synthesis of novel 2-amino-4-(1H-indol-3-yl)-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile derivatives and Knoevenagel condensation. Catalyst GN3 was able to furnish excellent yield for a wide range of products. Moreover, the catalyst was reusable and reused for several times without loss of its catalytic activity. © 2014 HeteroCorporation.

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