反应详情

温度

133 °C

A mixture of 10.67 g (0.05 mol) of 1-oxyl-4-acetamido-2,2,6,6-tetramethylpiperidine and 106.17 g (1.0 mol) of m-xylene under a nitrogen atmosphere is heated at 133° C. for 67 hours. The reaction mixture is filtered to remove the hydroxylamine, and the filtrate is washed with 10 w/v % ascorbic acid (3×33 mL) and distilled water (2×50 mL). The organic phase is dried over anhydrous sodium sulfate and the volatiles are removed in vacuo. The residue is recrystallized from acetonitrile to give 4.03 g (51% yield) of a white solid melting at 163-164.5° C.

1. filtrationThe reaction mixture is filtered
2. customto remove the hydroxylamine
3. washthe filtrate is washed with 10 w/v % ascorbic acid (3×33 mL)
4. distillationdistilled water (2×50 mL)
5. dry with materialThe organic phase is dried over anhydrous sodium sulfate
6. customthe volatiles are removed in vacuo
7. customThe residue is recrystallized from acetonitrile