反应详情

温度

60 °C

A solution of (4-morpholin-4-ylmethyl-phenyl)-piperazin-1-yl -methanone (0.128 g) in methanol (7.5 mL) was treated with (1-ethoxy-cyclopropoxy) -trimethyl-silane (1.5 mL), acetic acid (0.2 mL), and NaBH3CN (˜400 mg). The mixture was heated at 60° C. for 18 h, and then was cooled to rt and concentrated. The residue was diluted with 1 N NaOH and extracted with CH2Cl2. The organic layer was dried (Na2SO4) and concentrated. The residue was purified by column chromatography (SiO2) to give the title compound (0.0548 g, 38%). MS (ESI): mass calcd. for C19H27N3O2, 329.21; m/z found, 330.4 [M+H]+. 1H NMR (CDCl3): 7.36 (s, 4H), 3.79-3.68 (m, 6H), 3.50 (s, 2H), 3.44-3.32 (m, 2H), 2.74-2.61 (m, 2H), 2.60-2.50 (s, 2H), 2.45-2.40 (m, 4H), 1.66-1.62 (m, 1H), 0.49-0.44 (m, 2H), 0.44-0.39 (m, 2H).

1. temperaturewas cooled to rt
2. concentrationconcentrated
3. additionThe residue was diluted with 1 N NaOH
4. extractionextracted with CH2Cl2
5. dry with materialThe organic layer was dried (Na2SO4)
6. concentrationconcentrated
7. customThe residue was purified by column chromatography (SiO2)