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Pyrazolo[3,4,5-de]phthalazine. Syntheses of a practically unknown heterocyclic system by Dolores Viña; Esther del Olmo; José L. Lopez-Pérez; Arturo San Feliciano is a Chemistry article available to read on EtoBox.

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Simple procedures for the synthesis of 1,3-dihydropyrazolo[3,4,5-de]phthalazines (2), a practically novel type of heterocyclic compounds, have been developed. Compounds equally substituted at positions N 1 and N 3 can be directly obtained from 4,7-dihalogenated benzalphthalides (1). Those with different R 2 and R 3 substituents are prepared through intermediate phthalazin-1-ones (3), whose synthesis is also considered.

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Author

Dolores Viña; Esther del Olmo; José L. Lopez-Pérez; Arturo San Feliciano

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0040-4020)

Published

2009

Language

EN

Field

Chemistry (Physical Sciences)