1-Indanone → 1-hydroxy-1-(4-pyridyl)indan

4-Bromopyridine hydrochloride (1.9 g, 10 mmol) was dried and then suspended in diethyl ether (30 ml), and the suspension was mixed with n-butyl lithium hexane solution (1.6 M, 12 ml, 19 mmol) at −60° C. and stirred for 3 hours. The reaction solution was mixed with 1-indanone (2.0 g, 15 mmol) and then the reaction solution was stirred for 18 hours while gradually returning to room temperature. Ethyl acetate (50 ml) and water (50 ml) were added to the reaction solution to extract the reaction product, and the ethyl acetate layer was washed with water and then dried with anhydrous sodium sulfate. The solvent was removed by evaporation from the extract under a reduced pressure, and the thus obtained material was separated and purified by a silica gel column chromatography to obtain 420 mg (2.0 mmol, 20% in yield) of the title compound.

1. stirringthe reaction solution was stirred for 18 hours
2. customwhile gradually returning to room temperature
3. extractionto extract the reaction product
4. washthe ethyl acetate layer was washed with water
5. dry with materialdried with anhydrous sodium sulfate
6. customThe solvent was removed by evaporation from the
7. extractionextract under a reduced pressure
8. customthe thus obtained material was separated
9. custompurified by a silica gel column chromatography
10. customto obtain

ORD record

ord-8ca887ea2f2b4389a380505e0826cc02

Source dataset

uspto-grants-2002_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06498251B1