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Unusual rearrangements in the reaction of methylacetylene with 1-methylcyclohexanoyl tetrafluoroborate

โœ Scribed by M. I. Kanishchev; A. A. Shchegolev; W. A. Smit; R. Caple

Book ID
112493713
Publisher
Springer
Year
1977
Tongue
English
Weight
131 KB
Volume
26
Category
Article
ISSN
1573-9171

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Unusual rearrangement in the reactions of phenylmalonic acid dihydrazide with 1, 3-Diketones
โœ Mahmoud Al-Talib; Hasan Tashtoush; Areej Al-Ghoul; Burkhard Ziemer; Ulrich Koert ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 43 KB

Phenylmalonic acid dihydrazide reacted with 2,4-pentanedione to give, unexpectedly, 5,7-dimethyl-1,3dioxo-2-phenyl-2,3-dihydro-1H-pyrazolo[1,2-a]pyrazole-4-ylium 5. The structure of the product is confirmed by X-ray crystallography .