CAS RN: 58713-03-4 | Product Number: A2555
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|Appearance||White to Light yellow powder to crystalline|
|Purity(GC)||min. 98.0 %|
|Purity(Neutralization titration)||min. 98.0 %|
|Melting Point||99 °C|
|Hazard Statements||H319 : Causes serious eye irritation.
|Precautionary Statements||P264 : Wash skin thoroughly after handling.
P280 : Wear eye protection/ face protection.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
A solution of (1R,2R)-1,2-diphenylethanediamine (1.06 g, 5.0 mmol) and 1,3-dimethyl-5-acetylbarbituric acid (DAB) (1) (991 mg, 5 mmol) in anhydrous THF (15 mL) is stirred at room temperature under Ar. After stirring for 48 h, the reaction mixture is concentrated under reduced pressure, and the residue is purified by column chromatography using neutral silica gel (n-hexane:ethyl acetate=1:1) to afford the product 2 (1.92 g, 98% yield).
A solution of 3 (196 mg, 0.396 mmol) and 2-aminoethanol (238 µL, 3.96 mmol) in anhydrous EtOH (3 mL) is stirred at 50 °C for 24 h under Ar. After removal of the solvent under reduced pressure, the residue is purified by column chromatography using neutral silica gel (n-hexane:ethyl acetate=1:1) to afford the product 4 (124 mg, 99% yield).
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