Elsevier
Thermochimica Acta
,  том 468 ,  издание 1-2 ,  страницы 49-54

Thermal properties of 2-(aminomethyl)dicarboxylic acids

Тип публикации: Journal Article
Дата публикации: 2008-02-01
Elsevier
scimago Q2
wos Q2
БС2
SJR: 0.640
CiteScore: 6.2
Impact factor: 3.5
ISSN: 00406031, 1872762X
Physical and Theoretical Chemistry
Condensed Matter Physics
Instrumentation
Краткое описание
The melting point of an organic compound is commonly used for its characterization. In studies of 2-(aminomethyl)butanedioic acid, we found an apparent melting point that differed significantly from the literature values. Differential scanning calorimetry (DSC) revealed endothermic events prior to melting, and gravimetric analysis showed a concomitant mass loss. On heating, it appears that one water molecule is lost via dehydration of the monohydrate (the samples were recrystallized from aqueous solutions) and a second water molecule is lost from the cyclization reaction to form the corresponding lactam. The latter was confirmed by IR, NMR, and MS analysis of the product obtained by heating 2-(aminomethyl)butanedioic acid. Further studies of 2-(aminomethyl)pentanedioic acid gave similar results: loss of water and cyclization to form the lactam. However, the longer-chain amino acids, 2-(aminomethyl)hexanedioic acid and 2-(aminomethyl)heptanedioic acid, decompose on heating without cyclization.
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Cook M. D. et al. Thermal properties of 2-(aminomethyl)dicarboxylic acids // Thermochimica Acta. 2008. Vol. 468. No. 1-2. pp. 49-54.
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Cook M. D., Whitman C. A., WHITE R. L., White M. A. Thermal properties of 2-(aminomethyl)dicarboxylic acids // Thermochimica Acta. 2008. Vol. 468. No. 1-2. pp. 49-54.
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TY - JOUR
DO - 10.1016/j.tca.2007.11.014
UR - https://doi.org/10.1016/j.tca.2007.11.014
TI - Thermal properties of 2-(aminomethyl)dicarboxylic acids
T2 - Thermochimica Acta
AU - Cook, Matthew D.
AU - Whitman, Catherine A.
AU - WHITE, ROBERT L.
AU - White, Mary Ann
PY - 2008
DA - 2008/02/01
PB - Elsevier
SP - 49-54
IS - 1-2
VL - 468
SN - 0040-6031
SN - 1872-762X
ER -
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@article{2008_Cook,
author = {Matthew D. Cook and Catherine A. Whitman and ROBERT L. WHITE and Mary Ann White},
title = {Thermal properties of 2-(aminomethyl)dicarboxylic acids},
journal = {Thermochimica Acta},
year = {2008},
volume = {468},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016/j.tca.2007.11.014},
number = {1-2},
pages = {49--54},
doi = {10.1016/j.tca.2007.11.014}
}
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Cook, Matthew D., et al. “Thermal properties of 2-(aminomethyl)dicarboxylic acids.” Thermochimica Acta, vol. 468, no. 1-2, Feb. 2008, pp. 49-54. https://doi.org/10.1016/j.tca.2007.11.014.