Diethyl Ether → HCID 21258447, compound

A solution of 1-(2-naphthyl)cyclobutanecarbonitrile (48.2 g) in toluene (100 ml) was added dropwise under nitrogen to a stirred solution of methylmagnesium iodide [prepared in the usual manner from iodomethane (22 ml) and magnesium (8.16 g)] in ether (60 ml), then the mixture was stirred at ambient temperature for 18 hours. The resulting solid was collected by filtration, washed with ether (50 ml), and added in portions to a mixture of concentrated hydrochloric acid (125 ml) and water (200 ml). The mixture was heated at 100° C. with occasional stirring for 10 minutes, then it was cooled to ambient temperature. The product was extracted into toluene (3×200 ml), then the extracts were washed with water (200 ml), and the solvent was removed in vacua. The residue was triturated with petroleum ether (b.p. 40-60° C.) (100 ml), and the resulting solid was collected by filtration and dried in vacuo to give 1-[1-(2-naphthyl)cyclobutyl]ethanone as a yellow solid (35 g) which was used without further purification.

1. filtrationThe resulting solid was collected by filtration
2. washwashed with ether (50 ml)
3. additionadded in portions to a mixture of concentrated hydrochloric acid (125 ml) and water (200 ml)
4. temperatureThe mixture was heated at 100° C.
5. stirringwith occasional stirring for 10 minutes
6. temperatureit was cooled to ambient temperature
7. extractionThe product was extracted into toluene (3×200 ml)
8. washthe extracts were washed with water (200 ml)
9. customthe solvent was removed in vacua
10. customThe residue was triturated with petroleum ether (b.p. 40-60° C.) (100 ml)
11. filtrationthe resulting solid was collected by filtration
12. customdried in vacuo

ORD record

ord-907a47124e4b49d38c82fe6b5db66dbc

Source dataset

uspto-grants-2001_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06187802B1