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  1. No Access

    Article

    Stereospecific synthesis of α-methylated amino acids

    Both 2,5-trans and 2,5-cis disubstituted 2-tert-butyl-5-(indol-3-yl)methylimidazolidin-4-ones were synthesised and their enolates were prepared using LDA. While the enolate of the 2,5-trans disubstituted deri...

    S. Mzengeza, T. K. Venkatachalam, M. Diksic in Amino Acids (2000)

  2. No Access

    Article

    A new reagent for the visualisation of N-alkylureas on TLC plates

    A new reagent for the visualisation of substituted ureas on TLC plates byin situ nitrosation is described. The procedure involves spraying the plates with two different reagents, and takes about five minutes. The...

    M. Diksic, S. Farrokhzad in Chromatographia (1982)

  3. No Access

    Article

    Studies on precipitation and co-precipitation of tantalum and niobium from potassium fluoride solutions

    Precipitation and co-precipitation of tantalum and niobium from KF solution were investigated under various experimental conditions. Results obtained indicate that variations of HF concentration do not influen...

    M. J. Herak, M. Dikšić, P. Strohal in Microchimica Acta (1971)