A sample of ethyl 6-methoxy-2-naphthoate was obtained from Strides Arco Labs, Mangalore, India. Colourless plates of (I) were obtained by slow evaporation using a mixture (1:1 v/v) of acetone and toluene (m.p.: 359-361 K). ## Refinement The H atoms were found in a difference map, relocated in ide
Ethyl 4-acetoxy-6-(dimethylamino)-2-naphthoate
✍ Scribed by Du, Zhi-Qiang ;Huang, Zhi-Qiang ;Du, Guan-Sheng ;Jiang, Xuan-Zhen
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 133 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, C 17 H 19 NO 4 , was synthesized by the Stobbe condensation reaction of p-dimethylaminobenzaldehyde and diethyl succinate, followed by cyclization of the Stobbe product. The crystal structure is stabilized by intermolecular C-HÁ Á Á interactions.
📜 SIMILAR VOLUMES
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.004 A Ê R factor = 0.059 wR factor = 0.147 Data-to-parameter ratio = 12.4 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
In the molecule of the title compound, C 21 H 28 N 2 O 5 , the substituted 1,4-dihydropyridine (1,4-DHP) ring has a flattened-boat conformation. The carbonyl groups of the ester groups, at positions 3 and 5 in the 1,4-DHP ring, have cis configurations with respect to the double bonds in the 1,4-DHP
In the title compound, C~4~H~12~N^+^·C~11~H~12~Cl~2~O~6~P^−^·C~3~H~6~O, all bond lengths and angles are normal. Three ammonium H atoms participate in N—H...O hydrogen bonds, which stabilize the crystal packing along with weak intermolecular C—H...O interactions.
All the interatomic distances in the title compound, C 22 H 25 N 3 O 4 , are normal. The heteroatom ring of the quinoxalinone system shows a half-chair conformation, slightly distorted towards a sofa. In the crystal structure, the molecules dimerize via a pair of N-HÁ Á ÁO hydrogen bonds. The dimers