(2-Methoxy-4,6-dimethylphenyl)boronic acid → HCID 22490043, Verbindung

HRID 2180005Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2180005
Cl[C:2]1[N:7]=[C:6]([O:8][CH3:9])[C:5]([OH:10])=[C:4]([CH3:11])[N:3]=1.[CH3:12][O:13][C:14]1[CH:19]=[C:18]([CH3:20])[CH:17]=[C:16]([CH3:21])[C:15]=1B(O)O>C1(C)C=CC=CC=1.C(=O)([O-])[O-].[Na+].[Na+].C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:9][O:8][C:6]1[C:5]([OH:10])=[C:4]([CH3:11])[N:3]=[C:2]([C:15]2[C:14]([O:13][CH3:12])=[CH:19][C:18]([CH3:20])=[CH:17][C:16]=2[CH3:21])[N:7]=1

Komponenten

7

Edukt 2

HCID 21931520(2-Methoxy-4,6-dimethylphenyl)boronic acidHCID 22490069HCID 22490069, Verbindung

Produkt 1

HCID 22490043HCID 22490043, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 1140TolueneLösungsmittelHCID 8857Ethyl AcetateLösungsmittelHCID 10340Sodium CarbonateLösungsmittel

Reaktionsbedingungen

Temperatur
95 °C

Versuchsvorschrift

A mixture of 2-chloro-4-methoxy-6-methylpyrimidin-5-ol (348 mg, 2.0 mmol), 2-methoxy-4,6-dimethylphenylboronic acid (540 mg, 3.0 mmol), tetrakis(triphenylphosphine)palladium (0) (115 mg, 5 mol %) in toluene (12 mL) and sodium carbonate (1M in water, 4 mL) is heated at 95° C. (oil bath temperature) in a pressure tube for 14 hours. The reaction is cooled to room temperature, diluted with ethyl acetate, washed with NaOH (2M) and then brine (2×50 mL). The solvents are dried (sodium sulfate) and removed under reduced pressure. Flash chromatography of the crude product (50% ethyl acetate in hexanes) yields 4-methoxy-2-(6-methoxy-2,4-dimethylphenyl)-6-methylpyrimidin-5-ol as a white solid.

Aufarbeitung

  1. temperatureThe reaction is cooled to room temperature
  2. washwashed with NaOH (2M)
  3. dry with materialThe solvents are dried (sodium sulfate)
  4. customremoved under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-d8fc84db2620473d8f40827898f1aadb
Quelldatensatz
uspto-grants-2005_05
Patentnummer
US06887875B2

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