Reaktion #1871432

Reaktionsgleichung

5-chloro-2-(2-methyl-butylamino)-benzoic acid

(2S)-amino-3-(4-bromo-phenyl)-propionic acid methyl ester hydrochloride

HBTU

diisopropylethylamine

→

3-(4-bromo-phenyl)-(2S)-[5-chloro-2-(2-methyl-butylamino)-benzoylamino]-propionic acid methyl ester

Ausbeute 75.0%

Reaktionsbedingungen

Vorschrift

As per Procedure A, 5-chloro-2-(2-methyl-butylamino)-benzoic acid (12.44 mmol, 3 g) was treated with (2S)-amino-3-(4-bromo-phenyl)-propionic acid methyl ester hydrochloride (12.44 mmol, 3.66 g), HBTU (14.92 mmol, 5.66 g) and diisopropylethylamine (37.32 mmol, 4.82 g) to yield 3-(4-bromo-phenyl)-(2S)-[5-chloro-2-(2-methyl-butylamino)-benzoylamino]-propionic acid methyl ester. (4.4 g, 75% yield). LC-MS m/z: 482.8 (M+1)+.

Quelle