Water → 2-(((3aR,4S,6R,6aS)-6-((5-amino-6-chloro-2-(propylthio)pyrimidin-4-yl)amino)-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)oxy)ethanol

Participants

Reaction Conditions

Reaction Steps

A flask was charged with 4,6-dichloro-2-(propylthio)pyrimidin-5-amine (5 g), 2-(((3aR,4S,6R,6aS)-6-amino-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)oxy)ethanol L-tartaric acid salt (8.5 g), water (15 mL) and sodium bicarbonate (10.6 g). The mixture was heated to about 100° C. and maintained at the same temperature for about 20 hours and completion of the reaction was monitored by TLC. After completion of reaction the mixture was cooled to 30° C. followed by addition of water (50 mL) and ethyl acetate (25 mL). The mixture was stirred for about 10 minutes and layers were separated. The aqueous layer was extracted with ethyl acetate (25 mL). Total organic layer was washed with water (50 mL). The organic layer was subjected to complete distillation under vacuum at 55° C. followed by addition of ethyl acetate (5 mL). The mixture was stirred for 20 minutes followed by addition of n-hexane (75 mL). The mixture was further stirred at room temperature for solid separation followed by isolation of solid by filtration and washing with n-hexane (10 mL). The solid isolated was subjected to drying under vacuum at 60° C. for 3 hours to afford the title compound in about 91% yield having HPLC purity of about 99.18%.

Provenance & Evidence