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3,3,6,6-Tetra­methyl-9-(2-oxo-1,2-dihydro­quinolin-3-yl)-1,2,3,4,5,6,7,8-octa­hydro-9H-xanthene-1,8-dione

✍ Scribed by Selvanayagam, S. ;Paul, Jasmin ;Velmurugan, D. ;Ravikumar, K. ;Rathna Durga, R. Rathna

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
296 KB
Volume
61
Category
Article
ISSN
1600-5368

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✦ Synopsis

In the title compound, C 26 H 27 NO 4 , the central ring of the xanthene moiety is planar and the two outer rings are in halfboat conformations. The molecular packing in the crystal structure is stabilized by N-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds in addition to van der Waals forces.

📜 SIMILAR VOLUMES

9-(4-Bromo­phen­yl)-3,3,6,6-tetra­methyl
9-(4-Bromo­phen­yl)-3,3,6,6-tetra­methyl-3,4,5,6,9,10-hexa­hydro­acridine-1,8(2H,7H)-dione
✍ Xu, Jia-Ning ;Zhang, Jin-Peng ;Wang, Qian ;Zhu, Xiao-Tong ;Tu, Shu-Jiang 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 192 KB

The title compound, C 23 H 26 BrNO 2 , was synthesized by the reaction of 4-bromobenzaldehyde with dimedone and ammonium acetate under microwave irradiation. In the molecule, the dihydropyridine ring adopts a slight boat conformation.

3,3,6,6-Tetra­methyl-9-(3,4-methyl­ene­d
3,3,6,6-Tetra­methyl-9-(3,4-methyl­ene­dioxyl­phenyl)-1,2,3,4,5,6,7,8,9,10-deca­hydro­acridine-1,8-dione
✍ Li, Yuling ;Wang, Xiangshan ;Shi, Daqing ;Du, Baixiang ;Tu, Shujiang 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 159 KB

The crystal structure of the title compound, C 24 H 27 NO 4 , reveals that there are two roughly identical molecules in the asymmetric unit. In both acridine moieties, the central pyridine rings are slightly distorted and adopt a boat conformation, whereas the two outer six-membered rings display ha