Dipolar additions with 1-(4,6-dimethylpyrimidin-2-yl)- and 1-(4,6-dimethoxy-s-triazin-2-yl)-3-oxidopyridinium betaines
β Scribed by A. Heshmat Moustafa; Mrs. Samia A. El-Abbady; R. Alan Jones
- Book ID
- 112126588
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1981
- Tongue
- English
- Weight
- 300 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0022-152X
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π SIMILAR VOLUMES
The asymmetric unit of the title compound, C 16 H 13 ClN 4 O, contains two crystallographically independent molecules, A and B. The pyrazole ring of A makes dihedral angles of 5.8 (1) and 7.2 (1) with the pyrimidine ring and the benzene ring, respectively; the corresponding values in molecule B are
4-(4,6-Dimethoxy-l,3,5-triazin-2-yl)-4-methylmotpholinium chloride (DMTMM) was quantitatively synthesized by the coupling of 2-chloro-4,6-dimethoxy-13,5-uiazine and N-methylmorpholine in THF, and fully characterized. Condensation of carboxylic acids and amines by DMTMM proceeded effectivdy in THF to
In the title compound, C 16 H 28 ClN 5 , the piperidine ring has a classical chair conformation. In the crystal structure, weak intermolecular N-HΓ Γ ΓN hydrogen bonds link two molecules, related by a twofold axis of symmetry, into dimers.
In the title compound, C 20 H 37 ClN 6 , the piperidine ring adopts a chair conformation. In the crystal structure, N-HΓ Γ ΓN hydrogen bonds link the molecules into chains along b.
In the crystal structure of the title compound, C 8 H 10 Cl 2 N 4 ,stacking interactions are observed between the triazine rings. These interactions link the molecules into a dimer, packing along the a axis. The piperidine ring adopts a chair conformation.