Seven monosubstituted 1-naphthoic acids were synthesized by new or modified procedures, and their dissociation constants were measured potentiometrically at 25 °C in methanol, acetonitrile, dimethylformamide, and pyridine. Dissociation constants of these along with thirteen substituted 1-naphthoic acids and twenty-five substituted 2-naphthoic acids previously studied were measured at 25 °C in ethanol and dimethyl sulfoxide. The pKHA values of 3- and 4-substituted 1-naphthoic acids were treated by simple linear regression and principal component analysis, and the results were used for comparison of model compounds and of corresponding 3- and 4-substituted benzoic acids with the aim of comparison of benzene and naphthalene skeletons. It has been found, the 3 and 4 positions of the 1-naphthyl system can roughly be compared with the meta and para positions of benzene, respectively.
通过新的或修改过的程序合成了七种单取代的1-萘甲酸,并在25°C下在甲醇、乙腈、二甲基甲酰胺和吡啶中用电位法测量了它们的离解常数。这些单取代的1-萘甲酸与之前研究的十三种取代的1-萘甲酸和二十五种取代的2-萘甲酸的离解常数在25°C下在乙醇和二甲基亚砜中进行了测量。3-和4-取代的1-萘甲酸的pKHA值通过简单线性回归和主成分分析进行处理,并将结果用于比较模型化合物以及目的是比较苯和萘骨架的相应3-和4-取代苯甲酸。研究发现,1-萘基系统的3位和4位可以分别与苯的间位和对位进行粗略比较。