反应详情

温度

0 °C

To a stirred solution of N-((1R,3S)-3-(hydroxymethyl)cyclopentyl)-3,3-dimethylbutanamide (Intermediate 16-step 2, 4.5 g, 21.12. mmol) in DCM (50 ml) triethyl amine (about 9.5 ml, 68.1 mmol) was added at room temperature and cooled to about 0° C. After ten minutes, 4-methylbenzene-1-sulfonyl chloride (about 6.0 g) was added and stirred the reaction at room temperature for about 6 hours and completion of the reaction was monitored by TLC. Reaction mixture was neutralized with saturated NaHCO3 and extracted with DCM, the organic layer was dried over Na2SO4 and concentrated under reduced pressure to furnish the title compound (5.5 g) as a light yellow liquid. 1H NMR (300 MHz, CDCl3): 1.45 (s, 9H); 2.46-2.55 (m, 4H); 2.90-2.91 (m, 1H); 3.95-3.98 (m, 2H); 4.59-4.70 (m, 2H); 5.66-5.77 (m, 2H); 7.34-7.37 (d, J=9 Hz, 2H); 7.77-7.80 (d, J=9 Hz, 2H).

1. waitAfter ten minutes
2. customthe reaction at room temperature for about 6 hours
3. customReaction mixture
4. extractionextracted with DCM
5. dry with materialthe organic layer was dried over Na2SO4
6. concentrationconcentrated under reduced pressure