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(+)-N,N′-Bis[(7,7-dimethyl-2-oxobicyclo­[2.2.1]heptan-1-yl)methyl­sulfon­yl]piperazine

✍ Scribed by Ullrich, Małgorzata ;Kozakiewicz, Anna ;Wełniak, Mirosław ;Wojtczak, Andrzej

Publisher
International Union of Crystallography
Year
2006
Tongue
English
Weight
81 KB
Volume
62
Category
Article
ISSN
1600-5368

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✦ Synopsis

In the title compound, C 24 H 38 N 2 O 6 S 2 , which was synthesized from (+)-10-camphorsulfonic acid chloride and piperazine, the central piperazine ring adopts a chair conformation. The two camphorlsulfonyl groups are bound to the piperazine N atoms in equatorial positions. The molecule has approximate noncrystallographic twofold symmetry.

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✍ Chen, Ming-Liang ;Xiong, De-Jun ;Hu, Bo ;Li, Hai-Bing 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 155 KB

The molecule of the title compound, C~14~H~28~N~2~O~4~P~2~S~2~, possesses a crystallographically imposed inversion centre. The molecular structure is stabilized by two C—H...O hydrogen bonds.

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(1R,4R)-1-(Hydroxy­diphenyl­meth­yl)-7,7
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✍ Gao, Yu-Xing ;Tang, Guo ;Zhao, Yu-Fen 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 157 KB

The title compound, C 22 H 24 O 2 , has been obtained by a Grignard reaction of (1S,4R)-methyl 7,7-dimethyl-2-oxobicyclo[2.2.1]heptane-1-carboxylate with phenylmagnesium bromide. Intramolecular hydrogen bonding is observed between the carbonyl group and the hydroxy group.