反应详情

温度

-40 °C

To a solution of the ethyl 4-iodobenzoate (1.21 ml, 7.24 mmol) in tetrahydrofuran (12 ml) at −40° C. was added isopropylmagnesium chloride lithium chloride complex (6.13 ml, 7.97 mmol, 1.3 M in tetrahydrofuran) dropwise. The mixture was stirred for approximately 1 hour whereupon 4,4,4-trifluorobutanal (0.761 ml, 0.724 mmol) was added dropwise. The mixture was stirred at −40° C. for 15 minutes and slowly warmed to ambient temperature over 12 hours. The reaction was quenched with aqueous 1.0 M hydrochloric acid, and the aqueous layer was extracted with ethyl acetate (3×). The combined organic layers were dried over magnesium sulfate, filtered, and concentrated under reduced pressure to give ethyl(+/−)-4-(4,4,4-trifluoro-1-hydroxybutyl)benzoate, which was used without further purification.

1. additionwas added dropwise
2. temperatureslowly warmed to ambient temperature over 12 hours
3. customThe reaction was quenched with aqueous 1.0 M hydrochloric acid
4. extractionthe aqueous layer was extracted with ethyl acetate (3×)
5. dry with materialThe combined organic layers were dried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure