十二种新型磷腈碱(XC 6 H 4 -N N-C 6 H 4 -N PR 3),具有非同寻常的性能组合-中性和带电形式均具有高亲脂性,阳离子中不存在局部电荷,并且质子化后光谱变化很大/去质子化–使用Staudinger反应合成,并通过UV-Vis光谱,p K a值和亲脂性(log P值)表征。该碱可能在光学传感器和亲脂膜的酸碱指示剂中用作工作剂。
Twelve novel phosphazene bases (X-C6H4-NN-C6H4-NPR3) with an unusual combination of properties – high lipophilicity of both neutral and charged forms, lack of localized charges in the cations, and strong spectral changes upon protonation/deprotonation – were synthesized using the Staudinger reaction and characterized by UV–Vis spectra, pKa values and lipophilicities (logP values). The bases could potentially
十二种新型磷腈碱(XC 6 H 4 -N N-C 6 H 4 -N PR 3),具有非同寻常的性能组合-中性和带电形式均具有高亲脂性,阳离子中不存在局部电荷,并且质子化后光谱变化很大/去质子化–使用Staudinger反应合成,并通过UV-Vis光谱,p K a值和亲脂性(log P值)表征。该碱可能在光学传感器和亲脂膜的酸碱指示剂中用作工作剂。
A new method for the preparation of 5-acylidene and 5-imino substituted rhodanine derivatives and their antioxidant and antimicrobial activities
Versatile syntheses of 5-imino or 5-acylidene substituted 1,3-thiazolidin-4-one derivatives are reported from α-dioxothiazole systems and phosphoranes via Wittig reactions. Antimicrobial and antioxidant activity of the compounds were evaluated. 5-Carbonylmethylene substituted 2-thioxo-1,3-thiazolidines have better antioxidant properties than the 5-arylimino substituted ones. The % inhibition value