Potassium Carbonate → 6-chloro-5-(4-(3-hydroxyoxetan-3-yl)phenyl)-1H-indole-3-carbaldehyde

HRID 338225

Reaktionsgleichung

Reaktionsgleichung von HRID 338225
CC1(C)COB(B2OCC(C)(C)CO2)OC1.C([O-])(=O)C.[K+].Br[C:23]1[CH:28]=[CH:27][C:26]([C:29]2([OH:33])[CH2:32][O:31][CH2:30]2)=[CH:25][CH:24]=1.Br[C:35]1[CH:36]=[C:37]2[C:41](=[CH:42][C:43]=1[Cl:44])[NH:40][CH:39]=[C:38]2[CH:45]=[O:46].C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].CCO.C1(C)C=CC=CC=1>[Cl:44][C:43]1[CH:42]=[C:41]2[C:37]([C:38]([CH:45]=[O:46])=[CH:39][NH:40]2)=[CH:36][C:35]=1[C:23]1[CH:28]=[CH:27][C:26]([C:29]2([OH:33])[CH2:32][O:31][CH2:30]2)=[CH:25][CH:24]=1

Komponenten

10

Edukt 5

HCID 11430Potassium CarbonateHCID 517044Potassium AcetateHCID 2734316Bis(neopentyl glycolato)diboronHCID 583823793-(4-Bromophenyl)oxetan-3-olHCID 866985665-bromo-6-chloro-1H-indole-3-carbaldehyde

Produkt 1

HCID 866985766-chloro-5-(4-(3-hydroxyoxetan-3-yl)phenyl)-1H-indole-3-carbaldehydeAusbeute 35,5 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)Katalysator2×HCID 702EthanolLösungsmittelHCID 1140TolueneLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
110 °C

Versuchsvorschrift

A mixture of 5,5,5′,5′-tetramethyl-[2,2′]bi[[1,3,2]dioxaborinanyl] (149.0 mg, 0.44 mmol), oven dried potassium acetate (173.0 mg, 1.75 mmol) and 3-(4-bromo-phenyl)-oxetan-3-ol (100.0 mg, 0.44 mmol) in 1,4-dioxane (2 mL) was degassed with N2 for 5 minutes, treated with [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (33.0 mg, 0.044 mmol) and subjected to microwave irradiation at 110° C. for 1 hour. The cooled reaction mixture was filtered through celite and concentrated in vacuo to give a black oil. To the dark oil was added 5-bromo-6-chloro-1H-indole-3-carbaldehyde (112.0 mg, 0.43 mmol), 2N aqueous potassium carbonate (0.4 mL, 0.80 mmol), toluene (1.5 mL) and EtOH (0.5 mL). The reaction mixture was degassed with N2 for 10 minutes, treated with [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (25.0 mg, 0.034 mmol), and heated in a pressure tube to 110° C. for 2 hours. The cooled reaction mixture was purified by flash chromatography (33-100% EtOAc/heptanes) to give a solid. The solid was triturated in MeOH and filtered to afford the title compound (50 mg, 35%) as a yellow solid. MS (ES+) 328.0 (M+H)+. 1H NMR (400 MHz, DMSO-d6) δ 12.23 (s, 1H), 9.92 (s, 1H), 8.35 (s, 1H), 8.02 (s, 1H), 7.66 (d, J=9.4 Hz, 2H), 7.44 (d, J=8.2 Hz, 2H), 6.36 (s, 1H), 4.80-4.76 (m, 2H), 4.75-4.71 (m, 2H).

Aufarbeitung

  1. customwas degassed with N2 for 5 minutes
  2. customirradiation at 110° C. for 1 hour
  3. customThe cooled reaction mixture
  4. filtrationwas filtered through celite and
  5. concentrationconcentrated in vacuo
  6. customto give a black oil
  7. customThe reaction mixture was degassed with N2 for 10 minutes
  8. customThe cooled reaction mixture
  9. customwas purified by flash chromatography (33-100% EtOAc/heptanes)
  10. customto give a solid
  11. customThe solid was triturated in MeOH
  12. filtrationfiltered

Quellen und Nachweise

ORD-Eintrag
ord-8152ea7e50ec43aea5cafab497fadaef
Quelldatensatz
uspto-grants-2014_11
Patentnummer
US08889730B2

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