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Reactions of 9-Aroyl-3,3,6,6-Tetramethyl-1,2,3,4,5,6,7,8-Octahydroxanthene-1,8-Diones With Hydrazine and Methylhydrazine*

โœ Scribed by Bisenieks, E.; Uldrikis, J.; Poikans, J.; Baumane, L.; Petrova, M.; Liepinsh, E.; Duburs, G.

Book ID
121490688
Publisher
Springer US
Year
2014
Tongue
English
Weight
165 KB
Volume
49
Category
Article
ISSN
0009-3122

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9-(4-Bromophenyl)-3,3,6,6-tetramethyl-3,
9-(4-Bromophenyl)-3,3,6,6-tetramethyl-3,4,6,7-tetrahydro-2H-xanthene-1,8(5H,9H)-dione
โœ Bigdeli, M. Ali ;Mahdavinia, Gholam Hossein ;Amani, Vahid ๐Ÿ“‚ Article ๐Ÿ“… 2007 ๐Ÿ› International Union of Crystallography ๐ŸŒ English โš– 646 KB

The title compound, C 23 H 25 BrO 3 , was synthesized by the reaction of p-bromobenzaldehyde with dimedone and HClO 4 / SiO 2 in EtOH. In the molecule, the dihydropyran ring adopts a boat conformation and the two cyclohexene rings are in a trans conformation.