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Bromination of 3-methyl-2-cyclopenten-1-one by 5,5-dibromo-2,2-dimethyl-4,6-dioxo-1,3-dioxane

✍ Scribed by V. L. Novikov; O. P. Shestak; A. V. Kamernitskii; G. B. Elyakov

Book ID
112442547
Publisher
Springer
Year
1982
Tongue
English
Weight
69 KB
Volume
31
Category
Article
ISSN
1573-9171

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5-(Amino­methyl­ene)-2,2-dimethyl-1,3-di
5-(Amino­methyl­ene)-2,2-dimethyl-1,3-dioxane-4,6-dione
✍ da Silva, Luiz Everson ;Joussef, Antonio Carlos ;Silva, Luciano Luiz ;Foro, Sabi 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 248 KB

In the title compound C 7 H 9 NO 4 , the 1,3-dioxane-4,6-dione ring exhibits an envelope conformation. Intermolecular hydrogen bonds connect the molecules into chains. One intramolecular N-HÁ Á ÁO hydrogen bond to a carbonyl O atom is also observed, forming a six-membered ring.

2,2-Dimethyl-5-[(1,2,4-triazin-3-ylamino
2,2-Dimethyl-5-[(1,2,4-triazin-3-ylamino)methyl­ene]-1,3-dioxane-4,6-dione
✍ Joussef, Antonio C. ;Silva, Luiz Everson da ;Bortoluzzi, Adailton J. ;Foro, Sabi 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 206 KB

In the title compound, C 10 H 10 N 4 O 4 , the triazine ring is nearly planar. The 1,3-dioxane-4,6-dione ring exhibits a half-chair conformation. The molecule is disordered and the structure has been refined using a split model.