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Investigation of interaction of benzoquinones and naphthoquinones with substituted hydrazides

✍ Scribed by Alaa A. Hassan; Yusria R. Ibrahim; Ahmed M. Shawky

Publisher
Journal of Heterocyclic Chemistry
Year
2010
Tongue
English
Weight
119 KB
Volume
47
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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Nucleophilic attack by substituted hydrazides on C‐2, C‐3 of 2,3,5,6‐tetrachloro‐1,4‐benzoquinone and 2,3‐dichloro‐1,4‐naphthoquinone initiates the formation of benzo[e][1,3,4]oxadiazine and benzo‐ as well as naphthoxadiazepine derivatives. On the other hand, substituted hydrazides attack 1,4‐naphthoquinone‐2,3‐dicarbonitrile to form benzo[f]indazole‐4,9‐dione derivatives. A rationale for the conversions observed is presented. J. Heterocyclic Chem., 2010.

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Chemical Interactions of Thiosemicarbazi
Chemical Interactions of Thiosemicarbazides with 1,4-Benzo- and 1,4-Naphthoquinones
✍ Hassan, Alla A. ;Ibrahim, Yusria R. ;Semida, Ashraf A. ;Mourad, Aboul-Fetouh E. 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 361 KB

## Abstract Thiosemicarbazones 2a–e form charge‐transfer (CT) complexes with chloranil (CHL), fluoranil (TFQ) and 2,3‐dicyano‐1,4‐naphthoquinone (DCNQ). The donors 2a–d react with 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) to yield 3‐amino‐5‐arylthiadiazoles 7 and DDQ‐H~2~ (8). The thiosemicar