反应详情

A solution of diphenylphosphine (8.7 ml, 50 mmol) in THF (60 ml) is cooled to 0° under a nitrogen atmosphere and treated with n-butyllithium in hexane (1.6 M, 31.3 ml, 50 mmol). After stirring for 10 min, a solution of 4-[2-(indan-1-yl)ethyl]-1-(4-methoxyphenyl)piperazine (CXII, EXAMPLE 70, 6.73 g, 20 mmol) in THF (20 ml) is added. The mixture is refluxed for 24 hr, quenched with water and extracted with ethyl acetate (2×800 ml). The organic phase is washed with water, saline, dried (magnesium sulfate), filtered and concentrated under reduced pressure. The concentrate is purified by liquid chromatography on silica gel 60 (230-400 mesh, 400 g), eluting with hexane/acetone (2/1). The appropriate fractions homogeneous by TLC are combined and concentrated to give the free base of the title compound. This free base is converted into the hydrochloric acid salt and recrystallized from ethyl acetate/methanol to give the title compound, mp 215-216°, NMR (DMSO-d6, TMS) 7.30-6.68 and 3.68-1.60 δ.

1. temperatureThe mixture is refluxed for 24 hr
2. customquenched with water
3. extractionextracted with ethyl acetate (2×800 ml)
4. washThe organic phase is washed with water, saline
5. dry with materialdried (magnesium sulfate)
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customThe concentrate is purified by liquid chromatography on silica gel 60 (230-400 mesh, 400 g)
9. washeluting with hexane/acetone (2/1)
10. concentrationconcentrated