反应详情

温度

90 °C

Combine methyl 2-methylthio-5-nitrobenzoate (2.9 g, 12.7 mmol) and glacial acetic acid (100 mL). Heat to 90° C. Add iron powder (5 g) and water (20 mL) over about 10 minutes. After 30 minutes, the reaction mixture was filtered while still hot and diluted with water (500 mL). Extract the reaction mixture with ethyl acetate. Dry the organic layer over MgSO4, filter, and evaporate in vacuo to give a residue. Chromatograph the residue on silica gel eluting with 20% ethyl acetate/hexane to give methyl 2-methylthio-5-aminobenzoate. Rf=0.51 (silica gel, 30% ethyl acetate/hexane).

1. filtrationthe reaction mixture was filtered while still hot and
2. additiondiluted with water (500 mL)
3. extractionExtract the reaction mixture with ethyl acetate
4. dry with materialDry the organic layer over MgSO4
5. filtrationfilter
6. customevaporate in vacuo
7. customto give a residue