反应详情

A solution of the product of Example 9 (200 mg), 1-isopropyl-piperazine (100 mg), and acetic acid (0.05 mL) in DCM (3 mL) was treated with sodium triacetoxyborohydride (290 mg). After 16 h, the resulting mixture was treated with 10% sodium hydroxide (5 mL) and extracted with DCM (3×10 mL). The combined organic phases were dried (sodium sulfate) and evaporated. Chromatography of the residue (1–5% 2 M methanolic ammonia/DCM) gave the title compound as a colorless oil (225 mg). 1H NMR (400 MHz, CDCl3): 7.19 (d, J=8.6 Hz, 2H), 6.83 (d, J=8.6 Hz, 2H), 3.98 (t, J=6.6 Hz, 2H), 3.43 (s, 2H), 2.63 (m, 1H), 2.53 (br, 4H), 2.46 (m, 4H), 2.39 (br, 4H), 1.96 (m, 2H), 1.58 (m, 4H), 1.46–1.40 (m, 2H), 1.03 (d, J=6.5 Hz, 6H).

1. extractionextracted with DCM (3×10 mL)
2. dry with materialThe combined organic phases were dried (sodium sulfate)
3. customevaporated