Sodium Bicarbonate → 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 (25 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 (42.5 g), water (75 mL) and sodium bicarbonate (53 g). The mixture was heated to about 100° C. and maintained at the same temperature for about 14 hours and completion of the reaction was monitored by TLC. After completion of reaction, the mixture was cooled to 60° C. followed by addition of ethyl acetate (25 mL), water (175 mL) and n-hexane (375 mL). The mixture was stirred for about 7 hours. The solid obtained was isolated by filtration and washed with water (50 mL). The wet compound and water (500 mL) were charged into round bottom flask and stirred for overnight. The solid was isolated by filtration and washed with water (50 mL) and was subjected to drying under vacuum at 60° C. for 9 hours to afford the title compound in about 95% yield having HPLC purity of about 98.5%.

Provenance & Evidence