Reacción #87931

Ecuación de reacción

{(2-Bromo-4-cyano-phenyl)-[6-oxo-2-(3-trifluoromethyl-phenylamino)-cyclohex-1-enyl]-methyl}-carbamic acid tert-butyl ester

INTERMEDIATE 20

{(2-Bromo-4-cyano-phenyl)-[6-oxo-2-(3-trifluoromethyl-phenylamino)-cyclohex-1-enyl]-methyl}-carbamic acid tert-butyl ester

hydrogen chloride

1,4-dioxane

→

4-{Amino-[6-oxo-2-(3-trifluoromethyl-phenylamino)-cyclohex-1-enyl]-methyl}-3-bromo-benzonitrile hydrochloride

Disolventes

acetonitrile

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroThe product precipitates from the reaction mixture
2. 2
   FiltraciónThe precipitate is filtered off
3. 3
   Lavadowashed with acetonitrile
4. 4
   Otrodried
5. 5
   Otro0.56 min, (X012_S02)

Procedimiento

{(2-Bromo-4-cyano-phenyl)-[6-oxo-2-(3-trifluoromethyl-phenylamino)-cyclohex-1-enyl]-methyl}-carbamic acid tert-butyl ester (INTERMEDIATE 20, 20.8 g, 36.9 mmol) is suspended in acetonitrile (150 mL) and a solution of hydrogen chloride in 1,4-dioxane (4 M, 46.1 mL, 184.3 mmol) is added. The mixture is stirred at room temperature for 3 h. The product precipitates from the reaction mixture. The precipitate is filtered off, washed with acetonitrile and dried. Yield: 16.5 g ESI mass spectrum: [M+H]+=464 (bromine isotope pattern), Retention time HPLC: 0.56 min, (X012_S02).

Fuente