Volume 27, Issue 5 pp. 295-305
Research Article
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Simple and ecofriendly synthesis of dihydropyrimidinones (thiones), dihydropyridines, and pyridines using 3-formylchromones as substrates assisted by a recyclable Preyssler heteropolyacid

Laura M. Sanchez

Corresponding Author

Laura M. Sanchez

Departamento de Química, Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Ciencias Aplicadas ‘Dr. J. J. Ronco’ (CINDECA), UNLP-CCT- La Plata-CONICET, La Plata, Argentina

Correspondence

Laura M. Sanchez and Gustavo P. Romanelli, Departamento de Química, Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Ciencias Aplicadas ‘Dr. J. J. Ronco’ (CINDECA), UNLP-CCT- La Plata-CONICET, La Plata, Argentina.

Emails: [email protected]; [email protected]

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Gustavo Pasquale

Gustavo Pasquale

Cátedra de Química Orgánica, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina

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Ángel Sathicq

Ángel Sathicq

Departamento de Química, Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Ciencias Aplicadas ‘Dr. J. J. Ronco’ (CINDECA), UNLP-CCT- La Plata-CONICET, La Plata, Argentina

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Diego Ruiz

Diego Ruiz

Cátedra de Química Orgánica, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina

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Jorge Jios

Jorge Jios

LaSeISiC, Departamento de Química, Facultad de Ciencias Exactas, UNLP-CICPBA, La Plata, Argentina

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Andrea L. Ferreira de Souza

Andrea L. Ferreira de Souza

Universidade Federal do Rio de Janeiro, Macaé, Brazil

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Gustavo P. Romanelli

Corresponding Author

Gustavo P. Romanelli

Departamento de Química, Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Ciencias Aplicadas ‘Dr. J. J. Ronco’ (CINDECA), UNLP-CCT- La Plata-CONICET, La Plata, Argentina

Correspondence

Laura M. Sanchez and Gustavo P. Romanelli, Departamento de Química, Facultad de Ciencias Exactas, Centro de Investigación y Desarrollo en Ciencias Aplicadas ‘Dr. J. J. Ronco’ (CINDECA), UNLP-CCT- La Plata-CONICET, La Plata, Argentina.

Emails: [email protected]; [email protected]

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First published: 13 September 2016
Citations: 5
Contract grant sponsor: Universidad Nacional de La Plata (UNLP), CONICET.
Contract grant number: PIP 003.
Contract grant sponsor: ANPCyT.
Contract grant number: PICT 0409.

Abstract

Several dihydropyrimidinones/thiones, 1,4-dihydropyridines, and pyridine derivatives were prepared in very good yields and purity values. The corresponding reactions were carried out by employing a bulk Preyssler heteropolyacid H14[NaP5W29MoO110] as an efficient and recyclable catalyst. The preparation of pyridine derivatives was carried out not through a usual procedure, i.e., the opening of the γ-pyrone ring of 3-formylchromone. In general, reactions took place in solvent-free conditions at 80°C during short reaction times.

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