2-Bromo-6-nitrotoluene → 1-Mesityl-2-methyl-1-nitrobenzene

HRID 584813

Reaktionsgleichung

Reaktionsgleichung von HRID 584813
Br[C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([N+:8]([O-:10])=[O:9])[C:3]=1[CH3:11].[C:12]1([CH3:24])[CH:17]=[C:16]([CH3:18])[CH:15]=[C:14]([CH3:19])[C:13]=1OB(O)O.O.O.O.O.O.O.O.O.[OH-].[Ba+2].[OH-]>COC(OC)C.O.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>[C:12]1([CH3:24])[CH:17]=[C:16]([CH3:18])[CH:15]=[C:14]([CH3:19])[C:13]=1[C:4]1([N+:8]([O-:10])=[O:9])[CH:5]=[CH:6][CH:7]=[CH:2][CH:3]1[CH3:11]

Komponenten

7

Edukt 3

HCID 1235372-Bromo-6-nitrotolueneHCID 17749109Barium hydroxide, octahydrateHCID 22237855Mesitylboric acid

Produkt 1

HCID 223413561-Mesityl-2-methyl-1-nitrobenzeneAusbeute 92,9 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittelHCID 107951,1-DimethoxyethaneLösungsmittel

Versuchsvorschrift

A solution of 2-bromo-6-nitrotoluene (10.0 g, 46 mmol), mesitylboric acid (8.3 g, 51 mmol), Pd(PPh3)4 (2.7 g, 2.31 mmol) and barium hydroxide octahydrate (21.9 g, 69 mmol) in 2,2-dimethoxyethane (300 mL) and water (50 mL) was heated under reflux for six hours. The mixture was filtered through Celite, and the filtrate was diluted with ethyl acetate, washed with brine, dried over anhydrous magnesium sulfate and evaporated. The residue was purified by silica gel column chromatography (0-1% ethyl acetate/hexane), to give the title compound (11.0 g) as white crystals.

Aufarbeitung

  1. temperatureunder reflux for six hours
  2. filtrationThe mixture was filtered through Celite
  3. additionthe filtrate was diluted with ethyl acetate
  4. washwashed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customevaporated
  7. customThe residue was purified by silica gel column chromatography (0-1% ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-1ab0d644cd03436a84a1519a8e6ea98d
Quelldatensatz
uspto-grants-2005_08
Patentnummer
US06927221B2

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