Hydrochloric Acid → Phenyl-(3-trifluoromethoxy-phenylamino)-acetic acid hydrochloride

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Ethyl 2-bromo-2-phenylacetate (400 mg, 1.64 mmol), 3-(trifluoromethoxy)aniline (0.33 mL, 2.47 mmol), and DIPEA (0.43 mL, 2.47 mmol) are dissolved in acetonitrile (5 mL) and heated under MW irradiation at 100° C. for 1 hour (Conversion complete by UPLC/MS-UV). Water (5 mL) and lithium hydroxide hydrate (207 mg, 4.94 mmol) are directly added and the resulting mixture is stirred at RT for 1 hour. Then 4M HCl in dioxane is added until pH 1, the organic solvents are evaporated and the resulting crude oil is purified by filtration through a silica pad using DCM/MeOH=9/1 as the eluent. Intermediate I88 is collected as a brown oil (569 mg, quantitative yield).

Herkunft & Nachweise