Trichloroacetyl chloride → 2,2,2-trichloro-N-[2-(3-chlorobenzoyl)-4-(4-fluorobenzoyl)phenyl]-acetamide

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Reaction Conditions

Reaction Steps

Trichloro-acetylchloride (0.0848 mol) was added dropwise at 5° C. to a mixture of intermediate 3 (0.0707 mol) in DCM (250 ml) under N2 flow. The mixture was stirred at 5° C. for 30 minutes. Triethylamine (0.0848 mol) was added dropwise at 5° C. The mixture was stirred at 5° C. for 1 hour, then at room temperature for 2 hours and poured out into ice water. DCM was added. The mixture was extracted with DCM. The organic layer was separated, dried (MgSO4), filtered and the solvent was evaporated. The residue was crystallized from diethyl ether/DIPE. The precipitate was filtered off and dried, yielding 33.7 g (95%) of 2,2,2-trichloro-N-[2-(3-chlorobenzoyl)-4-(4-fluorobenzoyl)phenyl]-acetamide (intermediate 4).

Provenance & Evidence