series of monoor bis-sulfonylthioureas has been synthesized via nucleophilic substitution of potassium sulfonamides and sodium dithiocarbamate in water under mild conditions, and their properties as anion receptors in the absence and presence of K + have been investigated by 1 H NMR spectroscopy. It was found that calix[4]crown-5 derivative 10 shows much higher selective complexation capability with
在温和条件下,通过磺酰胺
钾和
二硫代氨基甲酸钠在
水中的亲核取代合成了一系列单或双磺酰
硫脲,并通过 1 H NMR 光谱研究了它们在 K + 不存在和存在下作为阴离子受体的性质。发现calix[4]crown-5衍
生物10在K+存在下与H2PO4的选择性络合能力比不存在K+时高得多,这表明K+和H2PO4的物理尺寸分别与主体化合物的相应空腔。