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Synthesis of 1,3,7,9-tetramethyl-2,4,6,8-tetraoxo-1,2,3,4,6,7,8,9-octahydropyrido[2,3-d:6,5-d']dipyrimidine from 6-amino-1,3-dimethyluracil and dimethyl sulfoxide

✍ Scribed by Elderfield, Robert C.; Wharmby, Malcolm

Book ID
126149539
Publisher
American Chemical Society
Year
1967
Tongue
English
Weight
442 KB
Volume
32
Category
Article
ISSN
0022-3263

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πŸ“œ SIMILAR VOLUMES

5-(4-Fluorophenyl)-1,3,7,9-tetramethylpy
5-(4-Fluorophenyl)-1,3,7,9-tetramethylpyrido[2,3-d:6,5-d]dipyrimidine-2,4,6,8(1H,3H,7H,9H)-tetrone
✍ Ghorbani, Hosein ;Bazgir, Ayoob πŸ“‚ Article πŸ“… 2007 πŸ› International Union of Crystallography 🌐 English βš– 659 KB

The asymmetric unit of the title compound, C 19 H 16 FN 5 O 4 , contains two independent molecules. The dihedral angles between the main planes and the fluorophenyl rings in the two molecules are 83.24 (5) and 71.76 (4) . Weakstacking interactions may be effective in the stabilization of the crystal

1-Ethyl-4,4,6,8-tetramethyl-2-tosyl-2,3,
1-Ethyl-4,4,6,8-tetramethyl-2-tosyl-2,3,3a,4,6,7,8,9-octahydro-1H-pyrrolo[3,4-c]pyrano[6,5-d]pyrimidine-7,9-dione
✍ Chinnakali, K. ;Sudha, D. ;Jayagopi, M. ;Raghunathan, R. ;Fun, Hoong-Kun πŸ“‚ Article πŸ“… 2007 πŸ› International Union of Crystallography 🌐 English βš– 913 KB

The asymmetric unit of the title compound, C~22~H~29~N~3~O~5~S, contains two independent molecules, __A__ and __B__, which differ slightly in the orientation of the ethyl and tosyl groups with respect to the attached pyrrolidine ring, as evidenced by the relevant torsion angles. In both molecules, t