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Communication

Unexpected Formation of 4-aryl-1-(Propane-2-ylidenehydrazono)-2,3-diazaspiro[5.5]undec-3-ene by the Reaction of Pyridazinethiones Derivatives with Hydrazine

Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
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Author to whom correspondence should be addressed.
Academic Editors: Stefano D’Errico and Annalisa Guaragna
Molbank 2021, 2021(3), M1243; https://doi.org/10.3390/M1243
Received: 26 May 2021 / Revised: 15 June 2021 / Accepted: 15 June 2021 / Published: 2 July 2021
(This article belongs to the Special Issue Molecules from Side Reactions II)
After making a new series of spiro[cycloalkane]pyridazinones with high Fsp3 character available, the new target was to synthesize derivatives comprising nitrogen-containing heterocycles, such as triazolo or tetrazolo rings. The corresponding thioxo derivatives (1a,b) seemed to be good starting materials for the synthesis of tetrazolo derivatives. The reaction of the pyridazinethiones (1a,b) with hydrazine surprisingly resulted in Schiff bases (3a,b) deriving from the reaction of hydrazones (2a,b) with acetone. View Full-Text
Keywords: pyridazinethione; spiro[cycloalkane]pyridazine; hydrazine; acetone; Schiff base pyridazinethione; spiro[cycloalkane]pyridazine; hydrazine; acetone; Schiff base
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MDPI and ACS Style

Sepsey Für, C.; Keglevich, G.; Bölcskei, H. Unexpected Formation of 4-aryl-1-(Propane-2-ylidenehydrazono)-2,3-diazaspiro[5.5]undec-3-ene by the Reaction of Pyridazinethiones Derivatives with Hydrazine. Molbank 2021, 2021, M1243. https://doi.org/10.3390/M1243

AMA Style

Sepsey Für C, Keglevich G, Bölcskei H. Unexpected Formation of 4-aryl-1-(Propane-2-ylidenehydrazono)-2,3-diazaspiro[5.5]undec-3-ene by the Reaction of Pyridazinethiones Derivatives with Hydrazine. Molbank. 2021; 2021(3):M1243. https://doi.org/10.3390/M1243

Chicago/Turabian Style

Sepsey Für, Csilla, György Keglevich, and Hedvig Bölcskei. 2021. "Unexpected Formation of 4-aryl-1-(Propane-2-ylidenehydrazono)-2,3-diazaspiro[5.5]undec-3-ene by the Reaction of Pyridazinethiones Derivatives with Hydrazine" Molbank 2021, no. 3: M1243. https://doi.org/10.3390/M1243

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