反应详情

Triethylamine (1.2 mL, 8.4 mmol) was added to a suspension of 2,4,6-trimethoxyaniline hydrochloride (1.68 g, 7.7 mmol) in 100 mL THF and stirred for 1 hour before filtering to remove triethylamine hydrochloride. The filtrate was concentrated and redissolved in 100 mL dichloromethane along with (±)-4-dodecyl-α-phenyl-2H-1,2,3-triazole-2-acetic acid (2.59 g, 7.0 mmol) at 0° C. Dicyclohexylcarbodiimide (1.51 g, 7.3 mmol) was added in one portion and the resulting suspension was warmed to room temperature and stirred for 16 hours. Filtered to remove a white solid and partitioned the filtrate between chloroform and 1N HCl. The organic layer was dried over MgSO4, filtered, and concentrated to give a pale lavender solid. Recrystallization from ethyl acetate/hexanes (4:1) gave the title compound as a white solid (2.80 g, 75%); mp 123°-125° C.

1. filtrationbefore filtering
2. customto remove triethylamine hydrochloride
3. concentrationThe filtrate was concentrated
4. stirringstirred for 16 hours
5. filtrationFiltered
6. customto remove a white solid
7. custompartitioned the filtrate between chloroform and 1N HCl
8. dry with materialThe organic layer was dried over MgSO4
9. filtrationfiltered
10. concentrationconcentrated
11. customto give a pale lavender solid
12. customRecrystallization from ethyl acetate/hexanes (4:1)