Potassium Phosphate, Tribasic → HCID 66880906, compound

The compound (5.60 g, 14.5 mmol) of step A, trimethylboroxine (2.20 ml, 15.8 mmol), bis(tricyclohexylphosphine)palladium(II)dichloride (926 mg, 1.25 mmol) and 1.27 mol/l aqueous potassium phosphate solution (35.0 ml, 44.5 mmol) were added to 1,4-dioxane (150 ml), and the mixture was heated under reflux for 18 hr. The reaction mixture was cooled to room temperature, and the solution was concentrated under reduced pressure. The residue was diluted with ethyl acetate, and the organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the solution was to concentrated under reduced pressure. The obtained oil was purified by silica gel column chromatography (ethyl acetate-hexane) to give the title compound (2.73 g, yield 68%) as a yellow solid.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 18 hr
3. concentrationthe solution was concentrated under reduced pressure
4. additionThe residue was diluted with ethyl acetate
5. washthe organic layer was washed with saturated brine
6. dry with materialdried over anhydrous magnesium sulfate
7. filtrationThe insoluble material was filtered off
8. concentrationto concentrated under reduced pressure
9. customThe obtained oil was purified by silica gel column chromatography (ethyl acetate-hexane)

ORD record

ord-c6d4250a98ec4a0298cfdc36e406e98a

Source dataset

uspto-grants-2013_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08513235B2