反应详情

A solution of 2-chloro-4-methyl-5-nitropyridine (3.0 g, 17.3 mmol) in pyrrolidine (50 mL) was stirred at 80° C. for 12 hr. The mixture was concentrated in vacuo to give a residue which was poured into water and extracted with ethyl acetate. Organic layer was washed with brine, dried over anhydrous sodium sulfate and concentrated in vacuo to give the title compound (3.6 g, 17.3 mmol, 100%) as a yellow solid.

1. concentrationThe mixture was concentrated in vacuo
2. customto give a residue which
3. extractionextracted with ethyl acetate
4. washOrganic layer was washed with brine
5. dry with materialdried over anhydrous sodium sulfate
6. concentrationconcentrated in vacuo