Condensation of thiohydrazide analogues with 4-bromo-3, 6-dichloropyridazine: an efficient rout to pyridazino[4, 3-e][1, 3, 4] thiadiazines

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Mohsen Nikpour ¹ , Mahsa S alehpoor Kiani ²

1 - Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz 6134968875, Iran.
2 - Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz 6134968875, Iran.

Received: 2018-10-12 Accepted : 2018-11-26 Published : 2018-03-01

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Abstract :

Abstract- Some new 3-(alkylsulfanyl)- 7-chloro-1-phenyl-1H-pyridazino [4,3-e][1,3,4]thiadiazine were synthesized by treatment of the alkyl-2-phenylhydrazinecarbodithioates with 4-bromo-3,6-dichloropyridazine in alkaline acetonitril. Orientation of the reaction has been determined by X-Ray crystallography technique. The chlorine atom on the number 7 position of these products was replaced by secondary amines in reflux condition.

References:

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Condensation of thiohydrazide analogues with 4-bromo-3, 6-dichloropyridazine: an efficient rout to pyridazino[4, 3-e][1, 3, 4] thiadiazines