134910

(1R,2S)-(−)-Ephedrin

98%

• Synonym(e): (−)-Ephedrin, (1R,2S)-(−)-α-(1-Methylaminoethyl)-benzylalkohol, (1R,2S)-(−)-2-Methylamino-1-phenyl-1-propanol, L-α-(1-Methylaminoethyl)-benzylalkohol
• Lineare Formel: C₆H₅CH[CH(NHCH₃)CH₃]OH
• CAS-Nummer: 299-42-3
• Molekulargewicht: 165.23
• Beilstein: 2208730
• EG-Nummer: 206-080-5
• MDL-Nummer: MFCD00064257
• UNSPSC-Code: 12352116
• PubChem Substanz-ID: 24848190
• NACRES: NA.22

Eigenschaften

• Qualitätsniveau: 200
• Assay: 98%
• Form: solid
• Optische Aktivität: [α]21/D −41°, c = 5 in 1 M HCl
• bp: 255 °C (lit.)
• mp (Schmelzpunkt): 37-39 °C (lit.)
• Dichte: 1.124 g/mL at 25 °C (lit.)
• Lagertemp.: 2-8°C
• SMILES String: CN[C@@H](C)[C@H](O)c1ccccc1
• InChI: 1S/C10H15NO/c1-8(11-2)10(12)9-6-4-3-5-7-9/h3-8,10-12H,1-2H3/t8-,10-/m0/s1
• InChIKey: KWGRBVOPPLSCSI-WPRPVWTQSA-N

Beschreibung

Allgemeine Beschreibung

(1R,2S)-(-)-Ephedrine, a chiral β-amino alcohol, is commonly used as a chiral auxiliary in asymmetric synthesis. It undergoes reduction to form (+)-methamphetamine.

Anwendung

Versatile chiral synthon, employed in catalysis and in the preparation of optically pure sulfoxides and oxazolidines.

(1R,2S)-(-)-Ephedrine can be used in the preparation of optically active phosphine-phosphonite ligands and chirally-substituted cyclopentadienyl (Cp) ligands. It reacts with phosphorus trichloride to form (2R,4S,5R)-2-chloro-3,4-dimethyl-5-phenyl-1,3,2-oxazaphospholidine. It can also act as a chiral resolving agent for (±)-mandelic acid.

Sicherheitshinweise

• Piktogramme: GHS05,GHS07
• Signalwort: Danger
• H-Sätze: H302,H314,H317
• P-Sätze: P260 - P272 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1B
• Lagerklassenschlüssel: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flammpunkt (°F): 186.8 °F - closed cup
• Flammpunkt (°C): 86 °C - closed cup
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves