Excess Volumes, Isentropic Compressibilities and Viscosities for Binary Mixtures of tert-Butylamine with Alkyl Acetates at 303.15 K

Evaluation of gem-Diacetates as Alternative Reagents for Enzymatic Regio- and Stereoselective Acylation of Alcohols

“…Purification by column chromatography (hexanes/EtOAc, 10:1 v/v) afforded product 3f ; 84% (96 mg, 0.84 mmol) colorless liquid; bp 126 °C (lit. 125.99 °C); 1 H NMR (400 MHz, CDCl 3 ) δ 4.07 (t, J = 6.7 Hz, 2H), 2.05 (s, 3H), 1.62–1.60 (m, 2H), 1.47–1.29 (m, 2H), 0.94 (t, J = 7.4 Hz, 3H); 13 C­{ 1 H} NMR (100 MHz, CDCl 3 ) δ 171.1, 64.3, 30.6, 20.9, 19.1, 13.6. The 1 H and 13 C­{ 1 H} NMR data were in accordance with those reported in the literature …”

Thermodynamic and spectroscopic study of molecular interactions in the binary liquid mixtures of N-methyl-2-pyrrolidone and some substituted benzenes at different temperatures

“…The value and magnitude of Δη depends on molecular shape of the components in addition to intermolecular forces. In general, for systems where dispersion forces and dipolar interactions are operating Δη values are found to be negative whereas charge transfer and hydrogen bonding interaction lead to positive Δη values [47,48]. In the present study, the values of deviations in viscosity Δη are all positive (Fig.…”

Densities and Viscosities for the Ternary System of 1,2,3,4-Tetrahydronaphthalene + Isopropylcyclohexane + Cyclopropanemethanol and Corresponding Binaries at T = (293.15 to 343.15) K

“…For the two binary mixtures of cyclopropane­methanol +1,2,3,4-tetrahydro­naphthalene and cyclopropane­methanol + isopropyl­cyclohexane, the excess molar volumes are positive over the entire range of molar fractions at all test temperatures, and the maximum values of V m E are both around x 1 = 0.6, as shown in Figure a and Figure c. The intermolecular force and molecular structure are the main factors that affect the excess molar volume. , As for the binary system containing alcohol, the intermolecular interactions play a more significant role for hydrogen bonding. ,, The hydrogen bond between the cyclopropyl­methanol molecules will be broken when the alkanes 1,2,3,4-tetrahydro­naphthalene or isopropyl­cyclohexane are added, so the positive excess molar volume of the binary mixtures can be observed. Obviously, the excess molar volume values of these two systems increase with the temperature increasing, which occurs because hydrogen bonds are more easily broken at high temperatures.…”

“…The intermolecular force and molecular structure are the main factors that affect the excess molar volume. 20,21 As for the binary system containing alcohol, the intermolecular interactions play a more significant role for hydrogen bonding. 13,22,23 The hydrogen bond between the cyclopropylmethanol molecules will be broken when the alkanes 1,2,3,4-tetrahydronaphthalene or isopropylcyclohexane are added, so the positive excess molar volume of the binary mixtures can be observed.…”