Iodine → HCID 12985516, compound

Participants

Reaction Steps

218.1 μmol of the compound obtained in Step A above and 5.91 mmol of double-sublimed iodine are dissolved in 500 ml of toluene inside the cell of an irradiation apparatus. After irradiating for 30 minutes, with stirring, the reaction mixture is cooled and then diluted with ethyl acetate. Washing with 80 ml of 20% aqueous sodium thiosulphate solution is carried out until the organic phase is decolourised. The aqueous phase is extracted with ethyl acetate three times, and then the organic phases are combined and directly concentrated in vacuo. A brown, semi-oily, semi-solid residue is collected. The procedure is repeated a further five times in the same manner, using the same amounts. The crude reaction products of the six procedures are combined. Washing with ethyl acetate is carried out on the six crude reaction products, which are then filtered. The filtrate is evaporated and then taken up in methanol, filtered, rinsed with methanol and then dried in vacuo, allowing the expected product to be isolated.

Provenance & Evidence