Water → Ambrisentan

Beteiligte Stoffe

Reaktionsschritte

In a 25 mL three neck flask with stirring arrangement, (1 gm) (R)-2,4-dichlorophenylethyl ammonium (S)-2-hydroxy-3-methoxy-3,3-diphenylpropionate and (0.726 gm) potassium tertiary butoxide (6.488 mmol) in 10 ml DMF at 25° C. were taken and stirred for 5 min. (0.604 gm) 4,6-dimethyl-2-(methylsulfonyl)pyrimidine (3.244 mmol) was added to the reaction mixture in one lot. The reaction mixture was stirred at room temperature for 6 hours and subsequently dumped into cold water and washed the aqueous layer with toluene. Aqueous layer was collected and acidified with HCl to pH 2. The solid was extracted with ethyl acetate, and wash the ethyl acetate layer with water followed by brine. Dry over sodium sulphate and concentrated on Buchi Rotavapor.

Herkunft & Nachweise