Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K,Journal of Chemical & Engineering Data

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Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-06-29 , DOI: 10.1021/acs.jced.0c00128
Zhenmei Deng ₁ , Fangzhao Li ₁ , Guomin Zhao ₁ , Wenge Yang ₁ , Yonghong Hu ₁

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in this paper, the solubility of 7-azaindole was measured in nine pure solvents (ethanol, isopropanol, n-propanol, methanol, EA, acetone, acetonitrile, n-hexane, tetrahydrofuran, THF) as well as in three binary mixed solvents (acetone + n-hexane, THF + n-hexane, and isopropanol + n-hexane) by a gravimetric method at temperatures from 278.15 to 323.15 K under atmospheric pressure. The solubility of 7-azaindole in selected solvents is closely related to the temperature and solvent composition: in nine pure solvents, the order of solubility of 7-zazindole is THF > acetone > methanol > isopropanol ≥ EA > ethanol > acetonitrile > n-hexane when the temperature is below 298.15 K. Nevertheless, as the temperature increases continually (298.15–328.15 K), the order of solubility changes to THF > acetone > methanol > isopropanol > n-propanol > ethanol > EA > acetonitrile > n-hexane; in three binary mixed solvents, both the temperature and solvent composition can influence the solubility of 7-azaindole, and the latter has a greater impact. The modified Apelblat model, λh model, Jouyban–Acree model, and CNIBS/R–K equation were used to correlate the experimental value. In these models, the Apelblat equation is more suitable for correlating 7-azaindole solubility in nine pure solvents; however, for three binary mixed solvents, the solubility of 7-azaindole is closer to the simulated value of the Jouyban–Acree model. Moreover, the KAT LASER model was used to deeply understand the influence of solvents on the solubility of 7-azaindole by multiple linear regression analysis (MLRA) of the solvent parameters involved in this model.

中文翻译：

温度为278.15至323.15 K时，纯净和二元混合溶剂中7-氮杂吲哚的溶解度和溶解行为分析

在本文中，7-氮杂吲哚的溶解度在九个纯溶剂（乙醇，异丙醇，测定Ñ丙醇，甲醇，EA，丙酮，乙腈，Ñ己烷，四氢呋喃，THF），以及在三个二进制混合溶剂（丙酮+ ñ己烷，THF + ñ正己烷和异丙醇+ ñ己烷）通过在温度从278.15到在大气压下323.15 K A重量法。7-氮杂吲哚在选定溶剂中的溶解度密切相关的温度和溶剂组成：在九个纯溶剂，7- zazindole是THF>丙酮>甲醇>异丙醇溶解性的顺序≥ EA>乙醇>乙腈> Ñ己烷当温度低于298.15 K.尽管如此，由于不断的温度增加（298.15-328.15 K），溶解度的顺序改变为THF>丙酮>甲醇>异丙醇> Ñ丙醇>乙醇> EA>乙腈> ñ -己烷在三种二元混合溶剂中，温度和溶剂组成均会影响7-氮杂吲哚的溶解度，而后者的影响更大。修改后的模型Apelblat，λ ħ模型，Jouyban–Acree模型和CNIBS / R–K方程用于关联实验值。在这些模型中，Apelblat方程更适合于关联7-氮杂吲哚在九种纯溶剂中的溶解度。但是，对于三种二元混合溶剂，7-氮杂吲哚的溶解度更接近Jouyban–Acree模型的模拟值。此外，通过对模型涉及的溶剂参数进行多元线性回归分析（MLRA），使用KAT LASER模型深入了解了溶剂对7-氮杂吲哚溶解度的影响。

更新日期：2020-07-09

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