Hydrochloric Acid → (3-((Methylsulfonyl)amino)phenyl)acetic acid

Temperature

85 °C

Methanesulphonylchloride (1.70 ml) was added to a stirred mixture of 3-aminophenylacetic acid (3.2 g) and sodium carbonate (5.44 g) in water (36 ml), and the mixture was heated at 85° C. with stirring for 4 h, allowed to cool and acidified with conc. hydrochloric acid to pH 2. After leaving to stand at approximately 4° C. for 18 h, a solid was filtered off, and the residue washed with water and ether. The aqueous and ether filtrates were combined and evaporated in vacuo to give a solid, which was dissolved in hot water, the solution was filtered whilst still hot and the filtrate left to cool before standing at 4° C. for 18 h. The precipitated solid was filtered, washed with a small quantity of cold water and dried in vacuo to give the title compound as a pale yellow solid (0.417 g).

1. temperatureto cool
2. customAfter leaving
3. waitto stand at approximately 4° C. for 18 h
4. filtrationa solid was filtered off
5. washthe residue washed with water and ether
6. customevaporated in vacuo
7. customto give a solid, which
8. filtrationthe solution was filtered whilst still hot and the filtrate
9. waitleft
10. temperatureto cool
11. waitbefore standing at 4° C. for 18 h
12. filtrationThe precipitated solid was filtered
13. washwashed with a small quantity of cold water
14. customdried in vacuo

ORD record

ord-405696ea706a4427860574e3b2cbb7e8

Source dataset

uspto-grants-2009_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07560548B2