Synthesis and electrochemical behaviour of β-halodehydroamino acid derivatives
作者:Paula M. T. Ferreira、L. S. Monteiro、G. Pereira
DOI:10.1007/s00726-009-0466-x
日期:2010.7
conclude that when N-iodosuccinimide was used as reagent a much higher Z-stereoselectivity is found. The electrochemicalbehaviour of the halogenated dehydroamino acids was studied by cyclic voltammetry. The results show a shift in the reduction peak to higher potentials of the β-halogenated dehydroamino acids when compared with the corresponding non-halogenated derivatives. As expected, the β,β-dihalodehydroalanines
Synthesis of 4-benzylidene-oxazol-5(4H)-imines, structural analogs of PK11195, under Bischler-Napieralski conditions
作者:Marco A. Almaraz-Girón、Alfredo Vázquez
DOI:10.1016/j.tetlet.2017.01.047
日期:2017.2
A simple and convenient one-pot procedure to prepare 4-benzylidene-2-aryl-1,3-oxazol-5(4H)-imines from phenyl pyruvic acid and a series of arylamides, under classical Bischler-Napieralski (B-N) conditions and microwave heating (MW) has been developed. The structures of the prepared compounds were unambiguously assigned through single crystal X-ray diffraction studies. The compounds thus prepared can be used to synthesize bioactive compounds with different molecular architectures. (C) 2017 Elsevier Ltd. All rights reserved.
Synthesis of Substituted Oxazoles from<i>N</i>-Acyl-β-hydroxyamino Acid Derivatives
作者:Paula M. T. Ferreira、Luís S. Monteiro、Goreti Pereira