Sodium Carbonate → 4-[5-(3,5-Dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-benzaldehyde

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-[5-(3,5-Dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-benzaldehyde oxime (14.20 g, 31.34 mmol), triethyl silane (10.3 mL, 7.53 g, 62.8 mmol), sodium carbonate (5.43 g, 39.3 mmol), palladium bis(diphenylphosphine)-ferrocene dichloride CH2Cl2-complex (1.28 g, 1.57 mmol) and DMF (250 mL) were stirred under an atmosphere of carbon monoxide at 65° C. over night. After cooling to room temperature, the solvent was evaporated and the residue taken up in MTBE, filtered and the filtrate was concentrated in vacuum. Purification of the residue on silica gel afforded the title compound (9.60 g, 76%).

Provenance & Evidence