UV absorption spectra of 3-aminorhodanine derivatives |
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Authors: | N M Turkevich L I Petlichnaya |
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Institution: | 1. Lvov Scientific-Research Institute of Hematology and Blood Transfusion, USSR
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Abstract: | 3-Aminorhodanine condenses readily with isothiocyanates to form unsymmetrical thioureas of the rhodanine series. The UV spectra of arylidene derivatives of 3-aminorhodanine consist of four bands: a short-wave band with a maximum up to 242 nm, a “thioamide” band with a maximum at 264–290 nm, a “dithiocarbonate” band with maxima at 290–370 nm, and a long-wavelength K band with maxima at 310–520 nm. The K absorption band is the most characteristic band for the arylidene derivatives of 3-aminorhodanine, and the maxima for 3′,5-diarylidene derivatives are generally shifted to the short-wave region, while the maxima for the 5-monoarylidene derivatives are usually shifted to the long-wave region. |
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