Réaction #595313

Équation de réaction

4-[4,5-dihydro-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-3-isoxazolyl]-N-[2-(methylthio)ethyl]-1-naphthalenecarboxamide

2,2,2-trifluoroacetamide

PhI(OAc)2

compound

4-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-N-[2-(methylthio)ethyl]-1-naphthalenecarboxamide

→

title compound

Rendement 30.0%

4-[4,5-dihydro-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-3-isoxazolyl]-N-[2-[S-methyl-N-(2,2,2-trifluoroacetyl)sulfinimidoyl]ethyl]-1-naphthalenecarboxamide

Rendement 30.0%

Solvants

dichloromethane

Conditions de réaction

Traitement

1. 1
   Autreprepared analogously
2. 2
   Filtrationfiltered through a short pad of Celite®
3. 3
   Filtrationdiatomaceous filter aid
4. 4
   Lavagerinsed with ethyl acetate
5. 5
   ConcentrationThe filtrate was concentrated
6. 6
   Autrethe residue was purified by column chromatography on silica gel

Mode opératoire

To a stirred suspension of 4-[4,5-dihydro-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-3-isoxazolyl]-N-[2-(methylthio)ethyl]-1-naphthalenecarboxamide (prepared analogously as described for the compound of Example 3, Step A) (200 mg), 2,2,2-trifluoroacetamide (80 mg), MgO (57 mg), and Rh2(OAc)4 (4 mg) in dichloromethane (4 mL) was added PhI(OAc)2 (172 mg) at room temperature. The resulting mixture was stirred overnight at room temperature, then filtered through a short pad of Celite® diatomaceous filter aid, and rinsed with ethyl acetate. The filtrate was concentrated, and the residue was purified by column chromatography on silica gel using hexanes/ethyl acetates (1:1 to 1:4) as eluent to afford the title compound as a semisolid (70 mg, 30% yield).

Source