Cesium carbonate → 6-[2-(2,5-Dichlorophenyl)-5-methylthiazol-4-yl]-2,2,4,4-tetramethylcyclohexane-1,3,5-trione

HRID 1849962Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1849962
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[CH:4][C:3]=1B(O)O.BrC1SC(C[O:19][C:20]2[C:25]([CH3:27])([CH3:26])[C:24](=[O:28])[C:23]([CH3:30])([CH3:29])[C:22](=[O:31])[CH:21]=2)=CN=1.C(=O)([O-])[O-].[Cs+].[Cs+].[N-](S(C(F)(F)F)(=O)=O)[S:39](C(F)(F)F)(=O)=O.[CH2:53]([N+:57]1[CH:61]=CN(C)C=1)[CH2:54][CH2:55]C>COCCOCCOC.C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[CH:4][C:3]=1[C:61]1[S:39][C:54]([CH3:55])=[C:53]([CH:21]2[C:22](=[O:31])[C:23]([CH3:29])([CH3:30])[C:24](=[O:28])[C:25]([CH3:26])([CH3:27])[C:20]2=[O:19])[N:57]=1

Komponenten

7

Edukt 4

HCID 10796Cesium carbonateHCID 27733712,5-Dichlorobenzeneboronic acidHCID 59562431HCID 59562431, VerbindungHCID 1784485511-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

Produkt 1

HCID 595624336-[2-(2,5-Dichlorophenyl)-5-methylthiazol-4-yl]-2,2,4,4-tetramethylcyclohexane-1,3,5-trione

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 1140TolueneLösungsmittelHCID 8150DiglymeLösungsmittel

Reaktionsbedingungen

Temperatur
150 °C

Versuchsvorschrift

2,5-dichlorophenylboronic acid (266 mg, 1.39 mmol), 5-(2-bromothiazol-5-ylmethoxy)-2,2,6,6-tetramethylcyclohex-4-ene-1,3-dione (250 mg, 0.7 mmol), toluene (3 ml), caesium carbonate (310 mg, 0.95 mmol) and [1,3-bis(2,6-diisopropyl)imidazol-2-ylidene](3-chloropyridyl)palladium II dichloride (60 mg, 0.12 mmol) are mixed together in a microwave vial and heated to 150° C. for 30 min under microwave irradiation. The reaction mixture is cooled, filtered, evaporated and purified by flash chromatography on silica gel to give an orange oil. The oil is dissolved in diglyme (3 ml) and 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide (0.1 ml) and heated under microwave irradiation at 210° C. for 30 min. The reaction mixture is cooled to room temperature, the solvent is evaporated under reduced pressure and the residue is purified by flash chromatography on silica gel to give 6-[2-(2,5-dichlorophenyl)-5-methylthiazol-4-yl]-2,2,4,4-tetramethylcyclohexane-1,3,5-trione.

Aufarbeitung

  1. temperatureThe reaction mixture is cooled
  2. filtrationfiltered
  3. customevaporated
  4. custompurified by flash chromatography on silica gel
  5. customto give an orange oil
  6. temperatureThe reaction mixture is cooled to room temperature
  7. customthe solvent is evaporated under reduced pressure
  8. customthe residue is purified by flash chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-ed2c7bc668d042bea14677a1bc283784
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08956999B2

Notizen zur Reaktion

Wird geladen…