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3-Dimethyl­amino-1,1-dioxo-4,5,6,7-tetra­hydro-1H-λ6-thia-2,3a,8a-triazacyclo­penta­[a]inden-8-one, a derivative of a new ring system

✍ Scribed by Liepa, Andris J. ;Jahangiri, Saba ;Fallon, Gary D. ;Forsyth, Craig M.

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

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✦ Synopsis

The title compound, C 10 H 14 N 4 O 3 S, is the first example of the fused tricyclic octahydro-1-thia-2,3a,8a-triazacyclopenta[a]indene ring system. The S-containing heterocycle adopts a typical envelope conformation, fused at the 2,3-positions to a 2,3a,4,5,6,7-hexahydroindazol-3-one unit.

📜 SIMILAR VOLUMES

3-Dimethyl­amino-1,1-dioxo-4,5,6,7-tetra
3-Dimethyl­amino-1,1-dioxo-4,5,6,7-tetra­hydro-1H-λ6-thia-2,3a,8a-triazacyclo­penta­[a]inden-8-one, a derivative of a new ring system. Corrigendum
✍ Liepa, Andris J. ;Jahangiri, Saba ;Fallon, Gary D. ;Forsyth, Craig M. 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 75 KB

In the paper by Liepa, Jahangiri, Fallon & Forsyth [Acta Cryst. (2006), E62, o3170-o3171], there is an error in the reaction scheme. The correct scheme is given below.

Diethyl 2,6-diisobutyl-4,8-dioxo-2,3,6,7
Diethyl 2,6-diisobutyl-4,8-dioxo-2,3,6,7-tetra­hydro-1H,5H-2,3a,4a,6,7a,8a-hexa­azacyclo­penta­[def]­fluorene-8b,8c-dicarboxyl­ate
✍ Li, Yi-Tao ;Guo, Qian-Ni 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 189 KB

The molecule of the title compound, C 22 H 36 N 6 O 6 , exhibits normal geometric parameters. Both imidazole rings adopt envelope conformations with the C O group at the flap position. The triazinane rings adopt chair conformations.

(2,3-Dimethyl-7,7-dioxo-7H-4-oxa-7λ6-thi
(2,3-Dimethyl-7,7-dioxo-7H-4-oxa-7λ6-thia-1,6,7a-triaza­inden-5-­yl)diethyamine
✍ Liepa, Andris J. ;Jahangiri, Saba ;Fallon, Gary D. ;Forsyth, Craig M. 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 106 KB

The title compound, C 10 H 16 N 4 O 3 S, is the first example of a fused bicyclic oxathiatriazaindene ring system The sixmembered heterocycle adopts a boat conformation. Molecules are linked by weak C-HÁ Á ÁO hydrogen bonds.

Diethyl 2,6-dicyclo­hexyl-4,8-dioxo-2,2,
Diethyl 2,6-dicyclo­hexyl-4,8-dioxo-2,2,3,6,7-tetra­hydro-1H,5H-2,3a,4a,6,7a,8a-hexa­azacyclo­penta­[def]fluorene-8b,8c-dicarboxyl­ate
✍ Li, Yi-Tao ;Zhou, Bao-Han ;Yin, Guo-Dong ;Wu, An-Xin 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 388 KB

In the title compound, C 26 H 40 N 6 O 6 , the five-membered rings adopt envelope conformations and the six-membered rings are in chair conformations. The crystal packing is stabilized by C-HÁ Á ÁO hydrogen bonds.