Online ISSN: 2515-8260

Keywords : Oxidation

Oxidation of p-Anisaldehyde to p-Anisic Acid by Organic Clay as a Novel Method

S. P. Babara

European Journal of Molecular & Clinical Medicine, 2021, Volume 8, Issue 3, Pages 1358-1366

Oxidation of p-anisaldehyde by microwave irradiation produces p-anisic acid under solvent-free condition. This oxidation reaction is performed in presence of different red, white and black organic clay as catalyst. This method possess functional group compatability, does not involve cumbersome work-up exhibits chemoselectivity since other functional groups remain intact and proceeds under mild reactions. The structure of the obtained products were analyzed by 1H and 13C NMR(Nuclear Magnetic Resonance) spectral studies and organic clay catalysts were characterized by EDX(Energy dispersion x-ray analysis), XRD (X-ray diffraction) tenchniques. Elemental composition of red, white and black clay determined by EDX pattern recorded in the binding energy region of 1-10 KeV.  XRD studies showed average crystallite size of clay catalyst is in the range of 20 - 30 nm. The resulting product obtained in good yield within reasonable time

The Elaboration Of Amperometric Methods For The Determination Of Some Noble Metals In The Environmental Objects Abstract

Ruzmetov Uchkun Urunboevich; Yaxshimurotova Xonzoda; Turakulov Abbos Urolovich; Rahmonov Oxujon Olimogli; Smanova Zulaykho Asanalievna

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 3, Pages 3884-3891

The possibility of determination the electrochemical behavior of thionalide and thiourea on a platinum disk microanode is shown. The influence of background electrolytes and buffer mixtures on the conditions, course and results was studied. Based on these data methods for the amperometric determination of Pd(II) and Ag(I) using solutions of thioureas(TU) and thionalide (TNL) on a platinum rotating anode by its oxidation current, with a clear titration curve characterized by a clear endpoint were developed.