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Your search keyword '"Nguyen, Ha Thi Hoang"' showing total 19 results
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19 results on '"Nguyen, Ha Thi Hoang"'

18. Preparation of 6-aminoquinazolin-4(3H)-ones via direct SNAr on the quinazoline ring

Author

Barlaam, Bernard, Harris, Craig S., Lecoq, Jonathan, and Nguyen, Ha Thi Hoang

Subjects
*QUINAZOLINE, *ARGON, *SURFACE chemistry, *RING formation (Chemistry), *PLATINUM catalysts, *AMINO group, *CHEMICAL reactions
Abstract

Abstract: The preparation of 6-aminoquinazolin-4(3H)-ones requires the use of platinum–metal group catalysis on the corresponding C-6-iodo or 6-bromo precursors. Herein, we report to our knowledge the first successful SNAr reaction directly at the unactivated C-6 position of the quinazolin-4(3H)-one nucleus. [Copyright &y& Elsevier]

Published
2012
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19. polyMOFs: A Class of Interconvertible Polymer-Metal-Organic-Framework Hybrid Materials.

Author

Zhang Z, Nguyen HT, Miller SA, and Cohen SM

Abstract

Preparation of porous materials from one-dimensional polymers is challenging because the packing of polymer chains results in a dense, non-porous arrangement. Herein, we demonstrate the remarkable adaptation of an amorphous, linear, non-porous, flexible organic polymer into a three-dimensional, highly porous, crystalline solid, as the organic component of a metal-organic framework (MOF). A polymer with aromatic dicarboxylic acids in the backbone functioned as a polymer ligand upon annealing with Zn(II), generating a polymer-metal-organic framework (polyMOF). These materials break the dogma that MOFs must be prepared from small, rigid ligands. Similarly, polyMOFs contradict conventional polymer chemistry by demonstrating that linear and amorphous polymers can be readily coaxed into a highly crystalline, porous, three-dimensional structure by coordination chemistry., (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2015
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