Sodium Carbonate → 6'-fluoro-1-((2-(trimethylsilyl)ethoxy)methyl)-[3,3'-bipyridin]-6(1H)-one

HRID 595908Notes

Reaction equation

Br[C:2]1[CH:3]=[CH:4][C:5](=[O:16])[N:6]([CH2:8][O:9][CH2:10][CH2:11][Si:12]([CH3:15])([CH3:14])[CH3:13])[CH:7]=1.[F:17][C:18]1[CH:23]=[CH:22][C:21](B2OC(C)(C)C(C)(C)O2)=[CH:20][N:19]=1.C([O-])([O-])=O.[Na+].[Na+].S([O-])([O-])(=O)=O.[Na+].[Na+]>COCCOC.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].CCOC(C)=O>[F:17][C:18]1[N:19]=[CH:20][C:21]([C:2]2[CH:3]=[CH:4][C:5](=[O:16])[N:6]([CH2:8][O:9][CH2:10][CH2:11][Si:12]([CH3:15])([CH3:14])[CH3:13])[CH:7]=2)=[CH:22][CH:23]=1

Participants

Conditions

Temperature: 120 °C

Procedure

To a solution of 5-bromo-1-((2-(trimethylsilyl)ethoxy)methyl)pyridin-2(1H)-one (568 mg, 1.868 mmol) in DME (6227 μL, Ratio: 2.000) was added PdCl2(dppf) (68.3 mg, 0.093 mmol), 2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (500 mg, 2.242 mmol), 2M Na2CO3 (3113 μl, Ratio: 1.000) at room temperature. The reaction mixture was heated at microwave synthesizer for 10 min at 120° C. To the reaction mixture, sodium sulfate and EtOAc were added. After filtered off, the volatile materials were removed in vacuo. The crude product was purified by flash chromatography (gradient EtOAc in heptane) yielding 6′-fluoro-1-((2-(trimethylsilyl)ethoxy)methyl)-[3,3′-bipyridin]-6(1H)-one (52%). LCMS (m/z): 321.3 (MH+), 0.93 min.

Workup

filtrationAfter filtered off
customthe volatile materials were removed in vacuo
customThe crude product was purified by flash chromatography (gradient EtOAc in heptane)

Sources & evidence

ORD record: ord-9c7dbe57e6ab4bdf96159fb22ab89964
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09242996B2

Reaction notes

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