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Gobardanga, India

Gobardanga Hindu College, established in 1947, is a general degree college in Gobardanga, West Bengal, India. It offers undergraduate courses in arts, commerce and science. It is currently affiliated to West Bengal State University. Wikipedia.


Ray S.,University of Calcutta | Ghosh S.,Gobardanga Hindu College
Synthetic Communications | Year: 2010

Heating of o-acetoxybenzoyl azides 6-10 in toluene leads to the Curtius reaction, which, when followed by closure of oxazolone ring with concomitant migration of acetyl group from oxygen to nitrogen, produces 3-acetoxybenz[d] oxazol-2(3H)-ones 11-15, which undergo hydrolysis with hot dilute hydrochloric acid to furnish benz[d]oxazol-2(3H)-ones 17-21. Thermal reaction of 2-hydroxy-5-nitrobenzoyl azide (22) in toluene finally yields a mixture of 5-nitrobenz[d]oxazol-2(3H)-one (20) and 5-nitrobenz[d]isoxazol-3(2H)-one (23). Copyright © Taylor & Francis Group, LLC. Source


Karmakar B.,Gobardanga Hindu College | Banerji J.,University of Calcutta
Tetrahedron Letters | Year: 2011

A simple, efficient, and eco-friendly method for the synthesis of 1-(α-aminoalkyl) naphthols, the Betti bases, has been carried out over a basic nanocrystalline MgO catalyst in aqueous condition. The method has been applied for the synthesis of a range of compounds with variable functionalities in excellent yield and selectivity. © 2011 Elsevier Ltd. All rights reserved. Source


Karmakar B.,Gobardanga Hindu College | Banerji J.,University of Calcutta
Tetrahedron Letters | Year: 2011

A new, expeditious, efficient and eco-friendly method for the synthesis of organic dithiocarbamates has been achieved at room temperature using basic nanocrystalline MgO catalyst in aqueous condition. The method has been applied for the synthesis of a range of compounds with variable functionalities in excellent yield and selectivity. © 2011 Elsevier Ltd. All rights reserved. Source


Karmakar B.,Gobardanga Hindu College | Banerji J.,University of Calcutta
Tetrahedron Letters | Year: 2010

An efficient, mild and environmentally friendly method has been developed for the Strecker reaction to synthesize α-aminonitriles in the presence of K2PdCl4 as a catalyst. The three-component one-pot condensation of an aldehyde, amine and trimethylsilyl cyanide proceeded smoothly in water to afford the corresponding product in high yield with short reaction times. Crown Copyright © 2010. Source


Ankamwar B.,University of Pune | Mandal G.,Gobardanga Hindu College | Sur U.K.,Behala College | Ganguly T.,Indian Association for The Cultivation of Science
Digest Journal of Nanomaterials and Biostructures | Year: 2012

The development of eco-friendly protocol for the synthesis of nanomaterials is an important aspect of nanotechnology. The green and cost-effective solution of fabrication of nanomaterials is key for biotechnology development. In this article, we report the room temperature one step bottom up synthesis of silver nanoparticles using Murraya Koenigi leaf extract as the natural source of reducing and stabilizing agent for the first time. The synthesized silver nanocrystals were characterized by UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction measurements as well as by high resolution electron microscopy. High-resolution transmission electron microscope reveals the presence of multiply twinning defects in the synthesized nanoparticles. Source

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