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Synthesis, characterization, and crystal structure of 1,3,7,9-tetramethylpyrido-[2,3-d∶6,5-d′]-dipyrimidine-2,4,6,8-tetrone

✍ Scribed by C. Enrique-Mirón; M. Quirós-Olozábal; M. A. Romero-Molina; J. M. Salas-Peregrín; M. P. Sánchez-Sánchez; F. Hueso-Ureña; M. N. Moreno-Carretero; J. D. Martín-Ramos

Publisher
Springer
Year
1994
Tongue
English
Weight
274 KB
Volume
24
Category
Article
ISSN
1572-8854

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5-(4-Fluorophenyl)-1,3,7,9-tetramethylpy
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✍ Ghorbani, Hosein ;Bazgir, Ayoob 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 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

Synthetic strategy toward 1,9-functional
Synthetic strategy toward 1,9-functionalized pyrido[2,3-d:6,5-d′]dipyrimidine-2,4,6,8-tetrones
✍ Gabor Borzsonyi; Rachel L. Beingessner; Hicham Fenniri 📂 Article 📅 2009 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 106 KB

## Abstract magnified image A synthetic approach involving a solubilizing protecting group strategy is described to generate pyrido[2,3‐__d__:6,5‐__d__′]dipyrimidine‐2,4,6,8‐tetrones functionalized at positions 1 and 9 with alkylamine substitutents. J. Heterocyclic Chem., **46**, 79 (2009).