反应详情

A solution of 2-allyl-8-(8-azidooctyloxy)-2,3,4,5-tetrahydro-1H-2-benzazepin-1-one (920 mg, 2.48 mmol) in tetrahydrofuran (20 mL) was treated with 9-borabicyclononane (0.5 M/THF, 10 mL, 5.00 mmol), and the mixture was stirred under argon at room temperature for 18 hours. The mixture was then cooled in an ice bath, and EtOH (5 mL) followed by 15% aqueous NaOH (10 mL) and 30% H2O2 (15 mL) were added. The mixture was stirred for 1 hour, then saturated aqueous sodium thiosulfate was added (2b mL). The solution was partitioned between ethyl acetate and brine, and the combined ethyl acetate layers were dried (MgSO4), filtered, and concentrated in vacuo. The residue was purified by chromatography over silica gel to yield 400 mg (42%) of 2-(3-hydroxypropyl)-8-(8-azidooctyloxy)-2,3,4,5-tetrahydro-1H-2-benzazepin-1-one as a colorless oil; 1H NMR(CDCl3) d7.20(d, J=3 Hz, 1H), 7.04(d, J=6 Hz, 1H), 6.91(dd, J=3, 6 Hz, 1H), 3.96(t, J=6 Hz, 2H), 3.72(t, J=6 Hz, 2H), 3.61(t, J=6 Hz, 2H), 3.26(t, J=6 Hz, 2H), 2.73(t, J=6 Hz, 2H), 2.02(t, J=6 Hz, 2H), 1.77(m, 4H), 1.60(m, 2H), 1.36(m, 8H).

1. temperatureThe mixture was then cooled in an ice bath
2. additionwere added
3. stirringThe mixture was stirred for 1 hour
4. customThe solution was partitioned between ethyl acetate and brine
5. dry with materialthe combined ethyl acetate layers were dried (MgSO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe residue was purified by chromatography over silica gel