反应详情

tert-butyl 4-(2-{[(1-methyl-2-oxo-1,2-dihydroquinolin-3-yl)methyl]amino}-1-phenylethyl)piperidine-1-carboxylate (1.61 g crude, 3.39 mmol), EDC (1.298 g, 6.77 mmol), HOAT (0.461 g, 3.39 mmol), DIEA (1.182 ml, 6.77 mmol), and cyclohexanecarboxylic acid (0.504 ml, 4.06 mmol) were combined in CH2Cl2 and the reaction stirred for 15 hours. The mixture was partitioned between CH2Cl2 and satd. bicarb, the aqueous portion extracted 3×CH2Cl2, and the organic portion dried (Na2SO4) then concentrated in vacuo. The resulting material was purified by silica gel chromatography on an Isco Companion. The desired fractions were combined and concentrated in vacuo. 1.63 g, 82% over two steps.

1. customThe mixture was partitioned between CH2Cl2 and satd
2. extractionbicarb, the aqueous portion extracted 3×CH2Cl2
3. dry with materialthe organic portion dried (Na2SO4)
4. concentrationthen concentrated in vacuo
5. customThe resulting material was purified by silica gel chromatography on an Isco Companion
6. concentrationconcentrated in vacuo