反应详情

To a solution of 4.0 g (16.1 mmol) 4-nitro-3-trifluoromethyl-benzoic acid methyl ester in 50 mL methanol 0.4 g 10% palladium on charcoal was added and the suspension stirred for 2 h at room temperature under an atmosphere of hydrogen (1.7 bar). After the addition of 100 mL ethyl acetate the catalyst was filtered off, the filtrate evaporated and dried under high vacuum to give the title compound as a white solid (98%) which was used in the next step without further purification.

1. filtrationwas filtered off
2. customthe filtrate evaporated
3. customdried under high vacuum