Ammonium Chloride → 5-Cyclopent-1-en-1-yl-7-isopropyl-2,2-dimethyl-4-oxochroman-6-carbaldehyde

HRID 1516705Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1516705
FC(F)(F)S(O[C:7]1[C:16]([CH:17]=[O:18])=[C:15]([CH:19]([CH3:21])[CH3:20])[CH:14]=[C:13]2[C:8]=1[C:9](=[O:24])[CH2:10][C:11]([CH3:23])([CH3:22])[O:12]2)(=O)=O.[C:27]1(B(O)O)[CH2:31][CH2:30][CH2:29][CH:28]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].[Cl-].[NH4+]>O1CCOCC1.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:27]1([C:7]2[C:16]([CH:17]=[O:18])=[C:15]([CH:19]([CH3:20])[CH3:21])[CH:14]=[C:13]3[C:8]=2[C:9](=[O:24])[CH2:10][C:11]([CH3:23])([CH3:22])[O:12]3)[CH2:31][CH2:30][CH2:29][CH:28]=1

Komponenten

7

Edukt 4

HCID 25517Ammonium ChlorideHCID 62657Potassium Phosphate, TribasicHCID 3861343(Cyclopent-1-en-1-yl)boronic acidHCID 580029926-Formyl-7-isopropyl-2,2-dimethyl-4-oxo-3,4-dihydro-2H-chromen-5-yl trifluoromethanesulfonate

Produkt 1

HCID 580029585-Cyclopent-1-en-1-yl-7-isopropyl-2,2-dimethyl-4-oxochroman-6-carbaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

A solution of 550 mg (1.39 mmol) of 6-formyl-7-isopropyl-2,2-dimethyl-4-oxo-3,4-dihydro-2H-chromen-5-yl trifluoromethanesulfonate (Example 19A), 202 mg (1.81 mmol) of cyclopent-1-en-1-ylboronic acid, 112 mg (100 μmol) of tetrakis(triphenylphosphine)palladium and 503 mg (2.37 mmol) of potassium phosphate in 8 ml of degassed dioxane and stirred at 100° C. overnight. After cooling to room temperature, ammonium chloride solution is added and the mixture is extracted twice with ethyl acetate. The combined organic phases are dried over sodium sulfate, the solvent is then removed under reduced pressure and the residue is purified by column chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 20:1).

Aufarbeitung

  1. extractionthe mixture is extracted twice with ethyl acetate
  2. dry with materialThe combined organic phases are dried over sodium sulfate
  3. customthe solvent is then removed under reduced pressure
  4. customthe residue is purified by column chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 20:1)

Quellen und Nachweise

ORD-Eintrag
ord-3c2083a8486f4a57983c7fefd07e3e56
Quelldatensatz
uspto-grants-2012_07
Patentnummer
US08227511B2

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