Sodium Iodide → HCID 9836317, compound

Participants

Reaction Conditions

Reaction Steps

The compound of example 12 (2.05 g, 6.3 mmol) is brought into solution in a mixture of abs. acetonitrile (16 ml), glacial acetic acid (1.6 ml) and a little abs. DMF at 50° C., sodium iodide (2.35 g, 15.7 mmol) is added and then trimethylsilyl chloride (TMSCl, 1.6 ml, 1.37 g, 12.7 mmol) is added dropwise. The temperature of the batch is kept at 50° C. for 2 h. Glacial acetic acid (1.6 ml) and zinc powder (2.87 g, 44 mmol) is added in three portions and the mixture is stirred at 80° C. for 16 h. The mixture is cooled, treated with a little water and extracted with CH2Cl2. The CH2Cl2 extracts are dried over Na2SO4 sicc. and concentrated. The residue obtained is taken up in THF and eluted through Al2O3 (50 g) using THF. From the residue (1.4 g) obtained after evaporation of the THF, using acetone 0.6 g of pale yellow substance (94%; HPLC: RP 18; acetonitrile/NaH2PO4 buffer 70:30) is obtained, which is recrystallized from MeOH in the presence of heat: 0.43 g of pale yellow powder.

Provenance & Evidence