反应详情

1.78 g (44.6 mmol) of sodium hydride (60%) was added in portions to a solution of 3.00 g (40.5 mmol) of cyclopropane thiol (preparation according to: E. Block et al., J. Am. Chem. Soc. 1992, 114, 3492) in 100 ml THF/100 ml diethyl ether and was stirred for 30 minutes at room temperature. Then 6.00 g (38.7 mmol) of 1-fluoro-4-nitrobenzene was added in portions. The mixture was stirred for 2 hours at 40° C. After it had cooled, the mixture was put in water and was extracted with benzene (3×). The combined organic phases were concentrated by evaporation and the residue was purified chromatographically (hexane/ethyl acetate 95:5). 4.6 g (23.6 mmol; yield: 61%) of the product was obtained.

1. stirringThe mixture was stirred for 2 hours at 40° C
2. temperatureAfter it had cooled
3. extractionwas extracted with benzene (3×)
4. concentrationThe combined organic phases were concentrated by evaporation
5. customthe residue was purified chromatographically (hexane/ethyl acetate 95:5)
6. custom4.6 g (23.6 mmol; yield: 61%) of the product was obtained