反应详情

To suspension of sodium hydride (0.044 g, 1.1 mmol, 60% in mineral oil) in 0.5 ml DMF was added sodium 5-iodo-2-acetyl,4-methoxyphenol (0.292 g, 1 mmol, prepared as described in Example 35) as a solution in 1.5 ml DMF. After 10 minutes chloromethoxy methane (0.079 g, 1.0 mmol) was added. After 30 minutes the mixture was extracted with CH2Cl2. The The combined organics were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. Purification via flash chromatography (88:12=hexane/ethyl acetate) afforded 1-(2-hydroxy-4-iodo-5-methoxy-phenyl)-ethanone (0.314 g, 85%) as yellow solid; [MH]+=337.

1. extractionAfter 30 minutes the mixture was extracted with CH2Cl2
2. washThe The combined organics were washed with brine
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customPurification via flash chromatography (88:12=hexane/ethyl acetate)