Sodium Carbonate → Methyl 2-(4-((2-(3-chlorophenyl)-6-ethylpyrimidin-4-yl)methyl)phenyl)acetate

HRID 1508704Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1508704
Cl[C:2]1[CH:7]=[C:6]([CH2:8][CH3:9])[N:5]=[C:4]([C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([Cl:16])[CH:11]=2)[N:3]=1.CC1(C)C(C)(C)OB([CH2:25][C:26]2[CH:31]=[CH:30][C:29]([CH2:32][C:33]([O:35][CH3:36])=[O:34])=[CH:28][CH:27]=2)O1.C([O-])([O-])=O.[Na+].[Na+].O1CCOCC1>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].O>[Cl:16][C:12]1[CH:11]=[C:10]([C:4]2[N:3]=[C:2]([CH2:25][C:26]3[CH:27]=[CH:28][C:29]([CH2:32][C:33]([O:35][CH3:36])=[O:34])=[CH:30][CH:31]=3)[CH:7]=[C:6]([CH2:8][CH3:9])[N:5]=2)[CH:15]=[CH:14][CH:13]=1

Komponenten

7

Edukt 4

HCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 435575804-Chloro-2-(3-chlorophenyl)-6-ethylpyrimidineHCID 674944814-(2-Methoxy-2-oxoethyl)benzylboronic Acid Pinacol Ester

Produkt 1

HCID 90113000Methyl 2-(4-((2-(3-chlorophenyl)-6-ethylpyrimidin-4-yl)methyl)phenyl)acetateAusbeute 50 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)KatalysatorHCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

A 50-mL flask, with stirrer bar, was charged with 4-chloro-2-(3-chlorophenyl)-6-ethylpyrimidine (870 mg, 3.44 mol, 1 eq.), methyl 2-(4-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)phenyl)acetate (1.00 g, 3.44 mmol, 1 eq.), Pd(dppf)Cl2 (280 mg, 0.34 mmol, 0.10 eq.), and powdered Na2CO3 (1.09 g, 10.3 mmol, 3.0 eq.). Dioxane (16 mL) and water (8 mL) were added. The resulting mixture was stirred under Ar at 90° C. for 2 hr. until the starting chloride was consumed. After cooling to room temperature, the reaction mixture was filtered through celite washing with ethyl acetate until the filtrate was colorless. The filtrate was washed with sat. sodium chloride (3×25 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue (1.8 g) was purified by chromatography on silica gel using hexane/dichloromethane (10:0 to 0:10) as eluent, followed by chromatography on silica gel using hexane/ethyl acetate (10:0 to 3:1) as eluent, to afford methyl 2-(4-((2-(3-chlorophenyl)-6-ethylpyrimidin-4-yl)methyl)phenyl)acetate (0.65 g, 50% yield) as a colorless oil. MW=380.87. 1H NMR (CDCl3, 500 MHz) δ 8.49-8.47 (m, 1H), 8.37 (dt, J=7.5, 1.5 Hz, 1H), 7.44-7.38 (m, 2H), 7.31-7.27 (m, 2H), 7.27-7.23 (m, 2H, overlaps with CDCl3), 6.85 (s, 1H), 4.10 (s, 2H), 3.69 (s, 3H), 3.61 (s, 2H), 2.76 (q, J=7:5 Hz, 2H), 1.31 (t, J=7.5 Hz, 3H).

Aufarbeitung

  1. customuntil the starting chloride was consumed
  2. temperatureAfter cooling to room temperature
  3. filtrationthe reaction mixture was filtered
  4. washthrough celite washing with ethyl acetate until the filtrate
  5. washThe filtrate was washed with sat. sodium chloride (3×25 mL)
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe residue (1.8 g) was purified by chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-ede4943313954b7cb2966208e3062142
Quelldatensatz
uspto-grants-2015_12
Patentnummer
US09221843B2

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