[CH:1]1(Br)[CH2:3][CH2:2]1.[Mg].[CH2:6]([N:10]=[CH:11][C:12]1[C:17]([C:18]([F:21])([F:20])[F:19])=[CH:16][C:15]([C:22]([F:25])([F:24])[F:23])=[CH:14][C:13]=1F)[CH2:7][CH2:8][CH3:9]>C(OCC)C.[Cl-].[Mn+2].[Cl-]>[CH2:6]([N:10]=[CH:11][C:12]1[C:17]([C:18]([F:21])([F:20])[F:19])=[CH:16][C:15]([C:22]([F:25])([F:24])[F:23])=[CH:14][C:13]=1[CH:1]1[CH2:3][CH2:2]1)[CH2:7][CH2:8][CH3:9]Cyclopropylbromide (3.84 g, 32 mmol) was added to magnesium (771 mg, 32 mmol) in 20 mL diethylether and refluxed for 10 min. Manganese(II) chloride (160 mg, 1.27 mmol) and butyl-[1-(2-fluoro-4,6-bis-trifluoromethyl-phenyl)-methylidene]-amine (intermediate M, 4 g, 13 mmol) was added. The reaction mixture was refluxed for 2 h. The reaction mixture was quenched with 8 mL water and filtered through dicalite. The organic phase was separated and dried on sodium sulfate, filtered and evaporated. The crude material, brown oil (3.54 g, 82%) was used without further purification.
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