Tricyclohexylphosphine → (3-chloro-5-oxo-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-7-yl)boronic acid

HRID 1987092Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1987092
Br[C:2]1[CH:3]=[CH:4][C:5]2[CH:16]=[CH:15][C:9]3=[N:10][CH:11]=[C:12]([Cl:14])[CH:13]=[C:8]3[C:7](=[O:17])[C:6]=2[CH:18]=1.C1(P(C2CCCCC2)C2CCCCC2)CCCCC1.[B:38]1(B2OC(C)(C)C(C)(C)O2)[O:42]C(C)(C)C(C)(C)[O:39]1.C([O-])(=O)C.[K+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[Cl:14][C:12]1[CH:13]=[C:8]2[C:7](=[O:17])[C:6]3[CH:18]=[C:2]([B:38]([OH:42])[OH:39])[CH:3]=[CH:4][C:5]=3[CH:16]=[CH:15][C:9]2=[N:10][CH:11]=1

Komponenten

6

Edukt 4

HCID 75806TricyclohexylphosphineHCID 517044Potassium AcetateHCID 2733548Bis(pinacolato)diboraneHCID 159808187-Bromo-3-chloro-5H-benzo[4,5]cyclohepta[1,2-B]pyridin-5-one

Produkt 1

HCID 67364710(3-chloro-5-oxo-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-7-yl)boronic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 9811564Bis(dibenzylideneacetone)palladiumKatalysator

Reaktionsbedingungen

Temperatur
95 °C

Versuchsvorschrift

7-bromo-3-chloro-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-5-one (1.00 g, 3.12 mmol), Pd2(dba)3 (0.146 g, 0.16 mmol), tricyclohexylphosphine (0.104 g, 0.37 mmol), bis(pinacolato)diboron (0.87 g, 3.43 mmol) and potassium acetate (0.61 g, 6.23 mmol) were mixed in a dry flask through which argon was purged. The flask was charged with 40 mL of dry dioxane and argon was bubbled through the solution for 15 minutes. The reaction was heated to 95° C. and stirred under argon. After 6 h, the reaction mixture was poured into 500 mL of ethyl acetate and 100 mL of saturated aqueous ammonium chloride. The organic layer was separated, dried with magnesium sulfate, filtered, and concentrated to afford the title compound. LRMS (APCI) calculated for C14H10BClNO3 [M+H]+, 286.0; found 286.1.

Aufarbeitung

  1. customwas purged
  2. additionThe flask was charged with 40 mL of dry dioxane and argon
  3. customwas bubbled through the solution for 15 minutes
  4. additionthe reaction mixture was poured into 500 mL of ethyl acetate and 100 mL of saturated aqueous ammonium chloride
  5. customThe organic layer was separated
  6. dry with materialdried with magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-c1d802fffee94766ba4e100246a9fc2f
Quelldatensatz
uspto-grants-2009_06
Patentnummer
US07550478B2

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