Reactions with Hydrazonoyl Halides. Part 15.¹ A Synthetic Approach to 2,3-Dihydrothiadiazoles

Abstract

Hydrazonoyl halides 1 and 6a–f reacted with methyl hydrazinecarbodithioate (2) and methyl 3-[1-(aryl)alkylmethylidene]hydrazinecarbodithioates (9a–d or 10a,b), in ethanolic triethylamine solution, to afford the corresponding 2-hydrazono-3,5-diphenyl-2,3-dihydro-1,3,4-thiadiazoles (3), 5-methyl-2-methylsulfanyl-6-phenylhydrazono-1,3,4-thiadiazine (8) and 2,3-dihydro-1,3,4-thiadiazoles 17–20a–f, respectively.

References

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