dl-Aspartic acid
β Scribed by Wang, Guo-Ming ;Li, Zeng-Xin ;Duan, Chun-Sheng ;Li, Hui
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 751 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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π SIMILAR VOLUMES
A synthesis of the title compound from /13Clparaformaldehyde and [15N)ammonium chloride V f 8 ethyl 2-(1 ,3-/2-13Cldithianyl) acetate 3a is described. Ethyl/3-13C13-oxopropanoate derived in sl'tu from 3a was converted by a stepwise Strecker procedure to DL-[ 2-13C,15Nlaspartic acid 7a.
Solubilities of L-aspartic, DL-aspartic, DL-glutaric, p-hydroxybenzoic, o-anisic, p-anisic, and itaconic acids in water were determined in the temperature range 278 to 345 K. From these solubilities the apparent molar enthalpies of solution at T s 298.15 K were derived, and these . y1 . y1 Ε½ . Ε½ are
Single-crystal X-ray study T = 293 K Mean '(CΒ±C) = 0.007 A Γ R factor = 0.041 wR factor = 0.118 Data-to-parameter ratio = 7.4 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.