(4-Aminophenoxy)benzene → HCID 86632006, compound

Temperature

-5 °C

4-Phenoxybenzenamine (18.4 g, 101.1 mmol) dissolved in nitromethane (30 mL) was added slowly over 25 minutes to a solution of chlorosulfonyl isocyanate (16.4 g, 115.8 mmol) in nitromethane (100 mL) at −5° C. The suspension was stirred at −5° C. for an additional 15 minutes and AlCl3 (16.8 g, 125.9 mmol) was added portionwise. The reaction mixture was then heated at 105° C. for 30 minutes. The hot solution was poured onto ice (1 L) and the resulting precipitate was filtered off and washed with water (300 mL). The solid was then dissolved in hot aqueous sodium bicarbonate solution (10 g/200 mL), treated with charcoal, and filtered. The cooled solution was neutralized using 6N HCl and the resulting white precipitate was filtered off, washed with water and dried to afford the title compound (18 g, 62%).

1. temperatureThe reaction mixture was then heated at 105° C. for 30 minutes
2. additionThe hot solution was poured onto ice (1 L)
3. filtrationthe resulting precipitate was filtered off
4. washwashed with water (300 mL)
5. dissolutionThe solid was then dissolved in hot aqueous sodium bicarbonate solution (10 g/200 mL)
6. additiontreated with charcoal
7. filtrationfiltered
8. filtrationthe resulting white precipitate was filtered off
9. washwashed with water
10. customdried

ORD record

ord-777ee4806da44443a8d6118a9f002956

Source dataset

uspto-grants-2015_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09145380B2