Thionyl Chloride → HCID 86588179, compound

Participants

Reaction Conditions

Reaction Steps

Thionyl chloride (4.3 ml) was added to a stirred solution of (3aS,4S,6R,6aR)-6-(6-chloro-purin-9-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxole-4-carboxylic acid (10.0 g), in chloroform (100 ml). The mixture was heated at reflux temperature under nitrogen for 60 min. After cooling to 20° C. the solvent was removed in vacuo and the residue azeotroped with toluene (2×50 ml). A suspension of the residue in chloroform (50 ml) was added dropwise at an equal rate with a solution of 1-amino-2-propanol (2.3 ml) and diisopropylethylamine (5.1 ml) in chloroform (50 ml) over 10 min to chloroform (50 ml) at 0° C. The mixture was stirred at 20° C. for 18 hours. Phosphate buffer (pH 6.5, 100 ml) was added and the phases separated. The aqueous phase was extracted with chloroform (50 ml). The combined chloroform layers were dried with sodium sulphate and the solvent removed in vacuo to give the title compound as a white foam (6.63 g).

Provenance & Evidence