反应详情

A slurry of sodium azide (0.075 g, 1.160 mmol) and N,N-bis(4-methoxybenzyl)-4-(2-(6-methoxypyridin-3-ylamino)-5-(prop-1-en-2-yl)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amine (0.171 g, 0.290 mmol) in CHCl3 (1 mL) at −15° C. was treated with a solution of trifluoroacetic acid (0.223 mL, 2.90 mmol) in CHCl3 (1 mL) added via syringe over 10 min. The cooling reaction mixture was allowed to gradually warm to room temperature and stirred overnight. The reaction was sealed and heated at 60° C. After 2 h, the reaction was poured onto ice and basified with 10N NaOH. The reaction was partitioned between water and DCM. The aqueous layer was extracted with DCM (3×), and the combined organic layers were dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo to give 4-(5-(2-azidopropan-2-yl)-2-(6-methoxypyridin-3-ylamino)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (0.184 g, 0.291 mmol, 100% yield). m/z (ESI, +ve ion) 633 (M+H)+. 1H NMR (400 MHz, CDCl3) δ 11.67 (br. s., 1H); 8.90 (d, J=2.7 Hz, 1H); 8.38 (d, J=2.5 Hz, 1H); 8.26 (d, J=2.5 Hz, 1H); 7.91 (dd, J=8.8, 2.7 Hz, 1H); 7.18-7.26 (m, 4H); 6.81-6.94 (m, 4H); 6.73 (d, J=8.8 Hz, 1H); 4.90 (s, 2H); 4.81 (s, 2H); 3.94 (s, 3H); 3.82 (s, 3H); 3.78 (s, 3H); 2.59 (s, 3H); 1.64 (s, 6H).

1. additionadded via syringe over 10 min
2. customThe cooling reaction mixture
3. customThe reaction was sealed
4. temperatureheated at 60° C
5. waitAfter 2 h
6. customThe reaction was partitioned between water and DCM
7. extractionThe aqueous layer was extracted with DCM (3×)
8. dry with materialthe combined organic layers were dried over anhydrous sodium sulfate
9. filtrationfiltered
10. concentrationconcentrated in vacuo