反应详情

Under a N2 atmosphere, 600 mg (4.25 mmol) of trans-4-isopropyl-cyclo-hexylamine [for preparation see Arzneim. Forsch. 19 (1969), 140] and 120 mg (0.424 mmol) of 1-chloro-4-[2-(6-methyl-pyridin-3-yl)-ethyl]-isoquinoline are heated to 140° C. in an ampulla for 10 h. The reaction mixture is suspended in EtOAc, and mixed with 0.25 ml of NH3 solution (25%) and water. The separated aqueous phase is extracted twice more with EtOAc, the organic phases washed with water and brine, dried (Na2SO4) and concentrated by evaporation. Column chromatography (SiO2; hexane/EtOAc 1:1) yields trans 1-(4-isopropyl-cyclohexylamino)-4-[2-(6-methyl-pyridin-3-yl)-ethyl]-isoquinoline; 1H NMR (DMSO-d6) δ8.27 (m, 2H), 7.88 (d, 1H), 7.65 (t, 1H), 7.60 (s, 1H), 7.54 (m, 1H), 7.45 (t, 1H), 7.14 (d, 1H), 6.84 (d, 1H), 3.88 (m, 1H), 3.00 (m, 2H), 2.84 (m, 2H), 2.40 (s, 3H), 2.00 (m, 2H), 1.71 (m, 2H), 1.5-1.0 (m, 6H), 0.86 (d, 6H).

1. extractionThe separated aqueous phase is extracted twice more with EtOAc
2. washthe organic phases washed with water and brine
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated by evaporation