Isopropyl iodide → Travoprost

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

463 g of Travoprost acid is dissolved in 2.3 L of 1,3-dimethylimidazolidinone (DMI), and 420 g of K2CO3 and 300 ml of isopropyl iodide are added. The reaction mixture is stirred at 45° C. After the completion of the reaction NaHSO4 solution, water, hexane and ethyl acetate are added. The mixture is shaken, then the phases are separated and the lower, aqueous phase is extracted with hexane:ethyl acetate mixture. The united organic phase is washed with water, dried over Na2SO4, the drying material is filtered off and the solution is evaporated. The product is purified by chromatography on silica gel, using diisopropyl ether, acetone, dichloromethane, isopropanol mixture as eluent.

Herkunft & Nachweise