Iodine → HCID 60004403, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 9-[(3aR,4R,6R,6aR)-6-({[tert-butyl(dimethyl)silyl]oxy}methyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl]-N-(2,2-diphenylethyl)-2-(tributylstannyl)-9H-purin-6-amine (1.0 g, 1.12 mmol) (Preparation 4), iodine (0.43 g, 1.68 mmol) and tetrahydrofuran (30 ml) was stirred at 50° C. for 30 minutes. The mixture was cooled, dissolved in ethyl acetate and washed sequentially with saturated aqueous sodium thiosulphate solution followed by water. The organic phase was separated, dried over anhydrous sodium sulphate, filtered and the solvent removed under reduced pressure. The residue was purified by column chromatography on silica gel eluting with a gradient system of hexane gradually changing to hexane:ethyl acetate (50:50, by volume) to afford the title compound (1.05 g).

Provenance & Evidence