反应详情

温度

120 °C

Sodium tert-butoxide (135 mg, 1.41 mmol)) was added to a suspension of ethyl 4-((2S,4R)-1-acetyl-4-amino-2-methyl-1,2,3,4-tetrahydroquinolin-6-yl)benzoate (for a preparation see Intermediate 16) (450 mg, 1.28 mmol), 2-bromopyridine (403 mg, 2.55 mmol), 2′-(dicyclohexylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine (40 mg, 0.102 mmol) and tris(dibenzyldieneacetone)dipalladium(0) (47 mg, 0.051 mmol) in anhydrous toluene (4.5 mL). The mixture was heated under microwave irradiation to 120° C. for 1 h in a sealed vial. The mixture was partitioned between EtOAc and water, the aqueous layer was extracted twice with EtOAc, the combined organic phases were dried by passing through a hydrophobic frit and concentrated in vacuo to give a residue. The residue was purified by chromatography (10 g column, EtOAc/cyclohexane gradient followed by MeOH/EtOAc gradient) to give ethyl 4-((2S,4R)-1-acetyl-2-methyl-4-(pyridin-2-ylamino)-1,2,3,4-tetrahydroquinolin-6-yl)benzoate (216 mg, 0.503 mmol, 39% yield) as a brown gum. LCMS: (Formate, 2 min), Rt=0.84 min, MH+430.

1. customThe mixture was partitioned between EtOAc and water
2. extractionthe aqueous layer was extracted twice with EtOAc
3. customthe combined organic phases were dried
4. concentrationconcentrated in vacuo
5. customto give a residue
6. customThe residue was purified by chromatography (10 g column, EtOAc/cyclohexane gradient followed by MeOH/EtOAc gradient)