An Efficient Route to Pyridazino[4, 3‐e][1, 3, 4]thiadiazines
Journal of Heterocyclic Chemistry(2016)
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 acetonitrile. 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 at reflux condition.
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Key words
efficient route
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