反应详情

A mixture of 100 parts of 2-chloro-5-(1,1-dimethylethyl)-1,3-dinitrobenzene and 800 parts of methanol is hydrogenated at normal pressure and at room temperature with 10 parts of ruthenium-on-charcoal catalyst 10%. After the calculated amount of hydrogen is taken up, the catalyst is filtered off and the filtrate is evaporated. The residue is purified by column-chromatography over silica gel using trichloromethane as eluent. The pure fractions are collected and the eluent is evaporated, yielding 69 parts (78%) of 2-chloro-5-(1,1-dimethylethyl)-3-nitrobenzenamine as a residue.

1. filtrationthe catalyst is filtered off
2. customthe filtrate is evaporated
3. customThe residue is purified by column-chromatography over silica gel
4. customThe pure fractions are collected
5. customthe eluent is evaporated