| Popis: |
The methods for derivatization of phenols, substituted aromatic aldehydes, ketones and amines to produce substances containing-N[dbnd]N-, and bonds have been considered. The latter are capable to form a four-spot square as a result of two-dimensional chromatography with preliminary UV-irradiation before each development. It is shown, that on the sorbent layer take place reversible Z-E, syn-anti and azomethine-methanolamine conversions, which permit to obtain the magic square on TLC plates and thus to identify organic compounds in complex mixtures. |
