反应详情

To a solution of 306 mg 6-butyl-4-cyano-2-methyl-5-[(4-iodophenyl)methyl]pyrimidine in 6 mL methanol was added 0.885 mL (~7.81 mmol) 30% H2O2 and 0.937 mL (2.34 mmol) 2.5 N NaOH. The mixture was allowed to stir for 1 hour at room temperature. To the mixture was added ~1 mL HOAc. Solvent was removed in vacuo. The crude material (409 mg) was dissolved in ~20 mL methanol. To this was added 4.0 g Amberlyst-15®. The mixture was heated to 60° for 18 hours. After cooling to room temperature, ~5 mL pyridine was added. After stirring for 1 hour, the mixture was filtered through powdered cellulose flock, stripped of solvent in vacuo, stripped from toluene to remove remaining pyridine, then was medium pressure chromatographed on silica gel using 25% EtOAc/hexane to give 152 mg of the title compound, 46% yield. Rf 0.21 in 30% EtOAc/hexane, visualized by UV and ammonium molybdate/ceric gulfate stain; 1H-NMR (300 MHz, CDCl3); δ 7.58 (m, 2H0, 6.81 (m, 2H), 4.12 (s, 2H), 3.87 (s, 3H), 2.75 (s, 3H), 2.67 (3 line m, 2H), 1.53 (m, 2H), 1.31 (m, 2H), 0.86 (3 line m, 3H).

1. customSolvent was removed in vacuo
2. dissolutionThe crude material (409 mg) was dissolved in ~20 mL methanol
3. additionTo this was added 4.0 g Amberlyst-15®
4. temperatureThe mixture was heated to 60° for 18 hours
5. temperatureAfter cooling to room temperature
6. addition~5 mL pyridine was added
7. stirringAfter stirring for 1 hour
8. filtrationthe mixture was filtered through powdered cellulose flock
9. customto remove
10. customchromatographed on silica gel using 25% EtOAc/hexane