反应详情

Fifty percent sodium hydroxide (13.5 ml) is added over a 30-minute period dropwise to a suspension of 4-trifluoromethylthiophenylacetonitrile (9.7 g, 0.045 mol), 2-iodopropane (9.5 g, 0.056 mol), and 18 crown-6 (0.61 g, 0.0023 mol) in 13.5 ml of benzene and the exotherm reaches 43° C. After stirring 2.5 hours at ambient temperature, an aliquot placed on glc shows none of the starting nitrile remaining. The reaction is worked up by adding ice water and extracting with ether, which is washed with 10% HCl, water, and dried over sodium sulfate. Evaporation in vacuo gave 10.2 g (86.8%) of a red-brown oil.

1. customthe exotherm reaches 43° C
2. extractionextracting with ether, which
3. washis washed with 10% HCl, water
4. dry with materialdried over sodium sulfate
5. customEvaporation in vacuo