Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 21436-03-3, C6H14N2. A document type is Article, introducing its new discovery., Recommanded Product: (1S,2S)-Cyclohexane-1,2-diamine
Cu(ii) Schiff base complexes Cu(ii)-1 and Cu(ii)-3 based on 2-acetyl pyridine with both (1R,2R)-1,2-diaminocyclohexane and (1S,2S)-1,2- diaminocyclohexane were synthesized in a single step. Subsequent reduction of ligands 1 and 3 with NaBH4 followed by complexation with Cu(OTf) 2 resulted in generation of two more additional chiral centers in complexes Cu(ii)-2 and Cu(ii)-4. The ligands 1-4 and their corresponding complexes were well characterized by several spectral techniques like 1H-NMR, 13C-NMR, LC-MS, CD, UV-Vis spectroscopy and microanalysis. The respective Cu(ii) complexes derived from ligands 2 and 4 were investigated using both the solution and solid state EPR spectra. The particular orientation of the reduced complex with Cu(OTf)2 was confirmed by the X-ray crystal structure of the corresponding complex. All the catalytic protocols were applied in the asymmetric aza-Henry reaction to evaluate the catalytic properties of the Cu(ii) complexes in the present study.
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