Triethylamine → HCID 69551777, Verbindung

A solution of (3-methoxy-5-methyl-phenyl)-acetic acid (512.8 mg, 2.84 mmol), 3-amino-2-(3,4-dimethoxy-phenyl)-propionic acid ethyl ester (825 mg, 2.84 mmol), and triethylamine (912 uL, 6.54 mmol) in dry methylene chloride (25 mL) was chilled in an ice bath under argon. 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (573 mg, 2.98 mmol) was added in one portion and the mixture stirred at room temperature for 72 hrs. The reaction mixture was poured into ethyl acetate (100 mL) and extracted with 2.5% aqueous potassium bisulfate (3×20 mL), 5% aqueous sodium bicarbonate (3×20 mL), and saturated aqueous sodium chloride (20 mL). The organic layer was dried over magnesium sulfate, filtered and concentrated in vacuo to afford 2-(3,4-dimethoxy-phenyl)-3-[2-(3-methoxy-5-methyl-phenyl)-acetylamino]-propionic acid ethyl ester as a light tan foam (0.79 g, 67%). This material was used without further purification: 1H NMR (300 MHz) compatible.

1. extractionextracted with 2.5% aqueous potassium bisulfate (3×20 mL), 5% aqueous sodium bicarbonate (3×20 mL), and saturated aqueous sodium chloride (20 mL)
2. dry with materialThe organic layer was dried over magnesium sulfate
3. filtrationfiltered
4. concentrationconcentrated in vacuo

ORD-Eintrag

ord-0f99eb22943b4c5d9e6ce7bd186ecc66

Quelldatensatz

uspto-grants-2006_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07067529B2