反应详情

温度

-70 °C

200 mg (0.8 mmol) of 5-chloro-2-methylsulfonylindan-1-ol were dissolved in 5 ml of dry tetrahydrofuran. The solution was cooled to −70° C., and under an atomosphere of nitrogen, 0.4 ml (0.8 mmol) of lithium diisopropylamine (2 M solution in tetrahydrofuran) was added dropwise. The reaction solution was stirred at −70° C. for 30 min, and 62.2 μl (1 mmol) of methyl iodide were then added. The reaction mixture was warmed to 0° C., water and then ethyl acetate was added, the organic phase was separated off, dried over magnesium sulfate and filtered and the filtrate was concentrated. Chromatographic purification of the residue (silica gel; heptane/ethyl acetate 1/1) gave 5-chloro-2-(propane-2-sulfonyl)indan-1-ol as a wax-like substance.

1. temperatureThe reaction mixture was warmed to 0° C.
2. customthe organic phase was separated off
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationthe filtrate was concentrated
6. customChromatographic purification of the residue (silica gel; heptane/ethyl acetate 1/1)