Propargyl alcohol → 3-(4-(Trifluoromethyl)phenyl)prop-2-yn-1-ol

Temperature

50 °C

In 50 ml of diethylamine were dissolved 5.0 g (22 mmol) of 4-bromo-α, α,α-trifluorotoluene and 1.25 g (22 mmol) of propargyl alcohol, and 80 mg (0.11 mmol) of bis(triphenylphosphine)palladium (II) chloride and 40 mg (0.22 mmol) of copper (I) iodide were added to the solution, followed by stirring of the resulting mixture at 50° C. for 35 minutes. To the mixture were added 40 mg (0.06 mmol) of bis(triphenylphosphine)palladium (II) chloride, and the resulting mixture was stirred for a further 35 minutes. After the mixture was cooled to room temperature, it was diluted with benzene and filtered, and then the filtrate was washed with water. After the mixture was dried, the crude product obtained by evaporation of the solvent was subjected to column chromatography using 50 g of silica gel and eluted with a mixed solvent of ethyl acetate-hexane (3:17) to obtain 2.21 g (yield: 50%) of the title compound as an oil.

1. additionwere added to the solution
2. stirringthe resulting mixture was stirred for a further 35 minutes
3. temperatureAfter the mixture was cooled to room temperature
4. filtrationfiltered
5. washthe filtrate was washed with water
6. customAfter the mixture was dried
7. customthe crude product obtained by evaporation of the solvent
8. washeluted with a mixed solvent of ethyl acetate-hexane (3:17)

ORD record

ord-6bc74748a6674484bd1ae6fee9d84033

Source dataset

uspto-grants-1999_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05977152