Halogen-containing pyridines. 7. Synthesis and some conversions of (3,5-dichloro-2-pyridyl)hydrazine

Кобраков, К. И.; Korolev, V. K.; Rybina, I. I.; Келарев, В. И.

doi:10.1007/bf02256977

Cited by 3 publications

(1 citation statement)

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“…Cyclic acid anhydrides have been used as tools for bioconjugation [1], in the field of catalysts [1][2][3][4][5][6], in food chemistry [7], for cancer immunotherapy [8], in the synthesis of herbicides [9], for the preparation of membranes [10], in the green synthesis of macromolecules and nanoparticles [11,12], in the polymer and copolymer area [13][14][15], among other applications. Moreover, some cyclic anhydrides present unusual physical behavior and polymorphic phase transitions in crystalline phase whose properties have been obtained by differential scanning calorimetry and powder Xray diffraction [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Standard molar enthalpies of formation of 3-methylglutaric and 3,3-dimethylglutaric anhydrides

García-Castro,

Díaz-Sánchez,

Galicia-Aguilar

et al. 2023

Rev. Mex. Fís.

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In this research, both the standard molar enthalpy of formation in the crystalline phase and in the gas phase of 3-methylglutaric anhydride was calculated from experimental data. The temperature and enthalpy of fusion, as well as the molar heat capacity in solid phase was calculated by differential scanning calorimetry; the molar enthalpy of sublimation at 298.15 K by the Knudsen effusion method, the molar enthalpy of vaporization at 298.15 K by thermogravimetric analysis, and the standard massic combustion energy by combustion adiabatic calorimetry. Since 3,3-dimethylglutaric anhydride presented crystal transitions (with endothermic points at 352.76 K, 356.98 K and 397.15 K), some of its thermochemical properties were estimated from the functional group-contribution methods proposed by Benson, Gani and Naef and from application of Machine Learning based models.

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