反应详情

To a stirred ice cold solution of N-methyldodecanamine (5.0 g, 25.1 mmol) and DIEA (5.70 mL, 1.3 equiv, 32.6 mmol) in anhydrous DCM (150 mL) was added 3-azido-3-methylbutanoyl chloride (4.05 g, 1 equiv, 25.1 mmol) in small portions. The ice bath was removed and the reaction was stirred and left at room temperature for 3 h. The content of the reaction was poured into a separatory funnel. The organic layer was washed with 1 M HCl (3×100 mL) and saturated NaHCO3 (2×100 mL). It was dried over anhydrous MgSO4, filtered, concentrated and dried under high vacuum to give a crude oil (8.08 g, quant). This material was purified on an ISCO flash chromatography system with a gradient from 10-40% ethyl acetate and hexanes as eluent. The desired fractions were collected and concentrated to give a pale yellow oil (7.28 g, 89.3%). 1H NMR (CDCl3, 400 MHz): δ 0.88-0.94 (m, 3H), 1.26-1.35 (m, 6H), 1.47-1.48 (d, J=4, 6H), 1.50-1.59 (m, 2H), 2.51 (s, 2H), 2.94-3.04 (d, J=40, 3H), 3.30-3.40 (m, 2H). LRMS (ESI+) for C18H36N4O (324.3); Found: 325 (MH+).

1. customThe ice bath was removed
2. additionThe content of the reaction was poured into a separatory funnel
3. washThe organic layer was washed with 1 M HCl (3×100 mL) and saturated NaHCO3 (2×100 mL)
4. dry with materialIt was dried over anhydrous MgSO4
5. filtrationfiltered
6. concentrationconcentrated
7. customdried under high vacuum
8. customto give a crude oil (8.08 g, quant)
9. customThis material was purified on an ISCO flash chromatography system with a gradient from 10-40% ethyl acetate and hexanes as eluent
10. customThe desired fractions were collected
11. concentrationconcentrated