Triethylamine → N-[3-(4,5,7-trifluorobenzothiazol-2-yl)propionyl]-N-methylglycine ethyl ester

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Reaktionsschritte

To methylene chloride (10 ml) was added sarcosine ethyl ester hydrochloride (307 mg, 2 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (WSC.HCl; 422 mg, 2.2 mmol), 3-(4,5,7-trifluorobenzothiazol-2-yl)propionic acid (522 mg, 2 mmol) and triethylamine (220 mg, 2.2 mmol), and the mixture was stirred at room temperature for 15 hours. The resulting mixture was washed with water, dried and evaporated to yield a residue, which was purified on a silica gel column to give N-[3-(4,5,7-trifluorobenzothiazol-2-yl)propionyl]-N-methylglycine ethyl ester (610 mg, 85%) as an oil.

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