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Trends in Organic Chemistry   Volumes    Volume 13 
Green synthesis of bis-Biginelli esters, with vasodilatory effects, their mass spectrometric and physical studies
M. Olivia Noguez, Alejandro García, César Ibarra, Armando Cabrera, Juan M. Aceves, M. Inés Nicolas, René Miranda
Pages: 75 - 82
Number of pages: 8
Trends in Organic Chemistry
Volume 13 

Copyright © 2009 Research Trends. All rights reserved

A set of esters of the bis-Biginelli type were produced under the Green Chemistry Protocol, employing solventless conditions, using infrared irradiation as activating source and moreover in the absence of catalyst. The products were studied by mass spectrometry (electron impact, linked scans and high resolution) in order to characterize them and complementary to establish a validated fragmentation pattern. In addition, the vasodilatorily effect of the title molecules, in comparison with nifedipine, was also evaluated. Furthermore, the corresponding thermal analyses and X-ray diffraction patterns, for the obtained products, were carried out in order to explain the crystalline or amorphous forms, as well as their ambiguous melting points.
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