Catalytic Studies of Complexes of Organic Compounds. Part-4: Synthesis, Characterization, Catalytic activity of Cd (II) Complex of Chiral Schiff base

Chiral Schiff base ligand from 3,5-Diiodo-salicylaldehyde with a chiral amine (1S,2S)- (+)-1,2-Diaminocyclohexane is synthesized, and its Cd (II) complex was synthesized. These were analysed by the physical constant, TLC, colour, UV-Vis, FTIR and 1H NMR method. Also, efforts were made to study the catalytic activity of Cd (II) chiral schiff base complex. The oxidation of benzyl alcohol was used as model reaction using acetonitrile as solvent. The present reaction system was heterogeneous system of catalysis.

(Sila)Difluoromethylation of Fluorenyllithium with CF3H and CF3TMS

Difluoromethylation of the C9-H site of the fluorene ring using lithium base and fluoroform (CF3H), which is one of the most cost-effective difluoromethylating reagents, is attained to give difluoromethylated fluorenes with an all-carbon quaternary center. The Ruppert–Prakash reagent (CF3TMS) can also be applied to the present reaction system, providing siladifluoromethylated fluorenes that can be utilized for sequential carbon–carbon bond-forming reactions through activation of the silyl group.

Degradation mechanism of Methyl Orange by electrochemical process on RuOx–PdO/Ti electrode

The electrochemical degradation of Methyl Orange in 0.1 M NaCl solution over RuOx–PdO/Ti anode was investigated. Chemical oxygen demand (COD), ion chromatography (IC), Fourier Transform Infrared Spectroscopy (FTIR) and Gas chromatography-mass spectrometry (GC-MS) were employed to detect the intermediates formed during the electrochemical degradation. In the present reaction system, Methyl Orange could be effectively degraded. After 1 h treatment, the discoloration could reach 97.9% with COD removal of 57.6%. The results indicated that in the presence of chloride, the electrolysis was able to oxidise the dye with partial mineralisation of carbon, nitrogen and sulfur into CO2, NO3− and SO42−, respectively. After 8 h electrolysis, 62% of sulfur contained in Methyl Orange was transformed to SO42−, and 17.6% of nitrogen changed to NO3−. The intermediates during electroprocess were detected to be low molecular weight compounds, chlorinated compounds, derivatives of benzene and long chain alkanes. Based on these data, a possible degradation mechanism of Methyl Orange was proposed.