Highly Efficient, One Pot Synthesis and Oxidation of Hantsch 1,4-Dihydropyridines Mediated by Iodobenzene Diacetate III Using Conventional Heating, Ultrasonic and Microwave IrradiationReportar como inadecuado




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A mild, general, convenient, and efficient one-pot synthesis of 4-arylpyridines 4 is described using conventional heating, ultrasound and microwave irradiation. Aryl aldehydes 2 were efficiently condensed with ethylacetoacetate 1 and ammonium acetate in acetonitrile to give dihydropyridine intermediates 4. The latter underwent a smooth Iodobenzene Diacetate III mediated aromatization reaction in the same pot to afford 4-arylpyridines 4 in good to excellent yields.

KEYWORDS

Dihydropyridines, Iodobenzene Diacetate, Ultrasonic, Microwave, One-Pot, Formylpyrazoles

Cite this paper

Hussain, K. and Wadhwa, D. 2014 Highly Efficient, One Pot Synthesis and Oxidation of Hantsch 1,4-Dihydropyridines Mediated by Iodobenzene Diacetate III Using Conventional Heating, Ultrasonic and Microwave Irradiation. International Journal of Organic Chemistry, 4, 174-181. doi: 10.4236-ijoc.2014.43019.





Autor: Khalid Hussain, Deepak Wadhwa

Fuente: http://www.scirp.org/



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