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Chemical Interactions of Thiosemicarbazides with 1,4-Benzo- and 1,4-Naphthoquinones

✍ Scribed by Hassan, Alla A. ;Ibrahim, Yusria R. ;Semida, Ashraf A. ;Mourad, Aboul-Fetouh E.

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
361 KB
Volume
1994
Category
Article
ISSN
0947-3440

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✦ Synopsis

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 thiosemicarbazide itself interacts with CHL via CT complexation to form the products 10–13. Heating of thiosemicarbazide (1) with 2,3‐dichloro‐1,4‐naphthoquinone (DCHNQ) affords the thiadiazine derivative 15.

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