2-Indanone → HCID 18690316, compound

A suspension of anhydrous cerium chloride (43.88 g, 178.1 mmol) in THF (250 mL) was stirred at room temperature for 2 hours under nitrogen. A solution of 3,5-m-xylenylmagnesium bromide (178 mmol, prepared from magnesium (4.33 g, 178.1 mmol) and 5-bromo-m-xylene (24.2 mL, 178.1 mmol) in ether (60 mL) was added at 0° C. and stirred for 3.5 h. A solution of 2-indanone (14.21 g, 107.7 mmol) in THF (20 mL) was added at the same temperature. After stirring at 0° C. for 3 h, the mixture was allowed to warm to room temperature and kept at ambient temperature for 12 h. It was then treated with 5% aqueous hydrochloric solution. The solution was extracted with diethyl ether (4*200 mL). All etheral layers were combined, washed with water (100 mL), dried over anhydrous magnesium sulphate and concentrated to give the crude product. 2-Indanone was distilled out at 80° C. (0.3 mm Hg). The residue was washed with pentane (50 mL) to yield 21.57 g of 2-(3,5-xylenyl)-2-indanol in solid form.

1. additionwas added at 0° C.
2. stirringstirred for 3.5 h
3. stirringAfter stirring at 0° C. for 3 h
4. temperatureto warm to room temperature
5. waitkept at ambient temperature for 12 h
6. extractionThe solution was extracted with diethyl ether (4*200 mL)
7. washwashed with water (100 mL)
8. dry with materialdried over anhydrous magnesium sulphate
9. concentrationconcentrated
10. customto give the crude product
11. distillation2-Indanone was distilled out at 80° C. (0.3 mm Hg)
12. washThe residue was washed with pentane (50 mL)

ORD record

ord-ebc8635b750249c3a81a7c4aa23bbec1

Source dataset

uspto-grants-1998_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05747621