56968-65-1Relevant articles and documents
Green synthesis of Ag@Au bimetallic regenerated cellulose nanofibers for catalytic applications
Gopiraman, Mayakrishnan,Saravanamoorthy, Somasundaram,Baskar, Ramaganthan,Ilangovan, Andivelu,Ill-Min, Chung
, p. 17090 - 17103 (2019/11/14)
The green synthesis of nanocomposites has attracted huge consideration in recent years due to its positive environmentally friendly impact. The present study reports the first bimetallic Ag-Au cellulose nanofiber composite (Ag@Au/CNCs) prepared via a very simple green preparation method. An aqueous leaves extract of Moringa oleifera was used to obtain the bimetallic Ag@Au/CNC nanocomposite. High-resolution transmission electron microscopy (HRTEM) observations revealed the successful formation of triangle, hexagonal, and spherical shapes of well-combined Ag-Au nanoparticles on the regenerated cellulose nanofiber surface. Further, the formation of Au-Ag bimetallic nanostructures was confirmed by X-ray photoelectron spectroscopy (XPS) and X-ray crystallography (XRD) results. The resultant bimetallic Ag@Au/CNC catalyst was found to perform remarkably well in the reduction of nitrophenols. The bimetallic Ag@Au/CNC catalyst gave excellent kapp values of 15.59 and 22.83 × 10-3 s-1 for the 2- A nd 4-nitrophenol reduction process, respectively. To our delight, the Ag@Au/CNC catalyst was found to perform well in the aza-Michael reaction. The catalytic activity of Ag@Au/CNCs was compared with mono-metallic Ag/CNCs, Au/CNCs, and other reported catalysts. Based on the results obtained, the high synergy of Ag@Au/CNCs was explained. A possible mechanism is proposed for the Ag@Au/CNC-catalyzed nitrophenol reduction and aza-Michael reactions.
1,2-DIHYDRO-1-OXOPHTHALAZINYL DERIVATIVES HAVING BIOLOGICAL ACTIVITY ON SEROTONIN RECEPTORS 5-HT2A AND 5-HT2C, AND PREPARATION THEREOF
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Page/Page column 22-23, (2008/12/07)
The present invention relates to a novel 1,2-dihydro-1-oxophthalazinyl piperazine compound having biological activity as serotonin receptor antagonist, a preparation method of the compound and a pharmaceutical composition for the treatment and prevention of central nervous system diseases comprising the compound.
Samarium(III) triflate catalyzed conjugate addition of amines to electron-deficient alkenes
Yadav,Ramesh Reddy,Gopal Rao,Narsaiah,Subba Reddy
, p. 3447 - 3450 (2008/09/19)
Amines undergo smooth nucleophilic addition to α,β-unsaturated compounds in the presence of a catalytic amount of samarium(III) triflate at ambient temperature to produce the corresponding β-amino compounds in excellent yields. This method is simple, convenient, and works efficiently under mild conditions. Georg Thieme Verlag Stuttgart.