Intramolecular Hydrogen Bonding and Anion Binding of <i>N</i>-Benzamido-<i>N</i>‘-benzoylthioureas
作者:Wen-Xia Liu、Yun-Bao Jiang
DOI:10.1021/jo702159r
日期:2008.2.1
N-acylthiourea is known to be unable to bind anions due to a strong intramolecular hydrogen bond (IHB). We show here that by inserting an amido group in the N‘-phenyl side the newly designed N-benzamido-N‘-benzoylthioureas, despite this IHB too, bind strongly to anions with binding constants on the order of 106−107 mol-1 L. Results suggest that potential anion receptors or organocatalysts could be developed
ñ - (p二甲基氨基)苯甲酰基Ñ “-phenylthiourea作为ñ -acylthiourea已知是不能结合的阴离子由于强的分子内氢键(IHB)。我们在这里表明,通过在N'-苯基侧插入一个酰胺基,尽管有这种IHB,新设计的N-苯甲酰胺基-N'-苯甲酰硫脲也能以10 6 -10 7 mol的结合常数牢固地与阴离子结合- 1个L.结果表明,潜在的阴离子受体或有机催化剂可能具有广泛的结构多样性这一框架的基础上进行开发。