Synthesis of 1,3,4-Thiadiazole, 1,3,4-Thiadiazine, 1,3,6-Thiadiazepane and Quinoxaline Derivatives from Symmetrical Dithiobiureas and Thioureidoethylthiourea Derivatives

Synthesis of 1,3,4-Thiadiazole, 1,3,4-Thiadiazine, 1,3,6-Thiadiazepane and Quinoxaline Derivatives from Symmetrical Dithiobiureas and Thioureidoethylthiourea Derivatives

Reactions of N,N`-disubstituted hydrazinecarbothioamides 8a-c and substituted thioureidoethylthioureas 9a-c with 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil, 10a) and 2,3,5,6-tetrabromo-1,4-benzoquinone (bromanil, 10b) to form N,N`-disubstituted [1,3,4]thiadiazole-2,5-diamines 11a-c, 6,7-dichlor...

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Bibliographic Details
Main Authors:	A. Abou-Zied, K. El-Shaieb, A. Mourad, A. Hassan
Format:	Article
Language:	English
Published:	MDPI AG 2005-08-01
Series:	Molecules
Subjects:	Tetrahalo-1 4-benzoquinones Cyclocondensation Heterocyclic compounds.
Online Access:	http://www.mdpi.com/1420-3049/10/7/822/

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