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1H-Indole-4-boronic acid → HCID 68195323, Verbindung

HRID 2169605
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2169605
[C:1]([O:4][C:5]([CH3:25])([CH2:7][CH2:8][CH2:9][N:10]1[CH2:19][C@@H:18]2[CH2:20][O:21][CH2:22][CH2:23][N:17]2[C:16]2[N:15]=[C:14](Cl)[N:13]=[CH:12][C:11]1=2)[CH3:6])(=[O:3])[CH3:2].[NH:26]1[C:34]2[CH:33]=[CH:32][CH:31]=[C:30](B(O)O)[C:29]=2[CH:28]=[CH:27]1>Cl[Pd]Cl.C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2]>[C:1]([O:4][C:5]([CH3:25])([CH2:7][CH2:8][CH2:9][N:10]1[CH2:19][C@@H:18]2[CH2:20][O:21][CH2:22][CH2:23][N:17]2[C:16]2[N:15]=[C:14]([C:30]3[CH:31]=[CH:32][CH:33]=[C:34]4[C:29]=3[CH:28]=[CH:27][NH:26]4)[N:13]=[CH:12][C:11]1=2)[CH3:6])(=[O:3])[CH3:2]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

4

Edukt 2

HCID 27631731H-Indole-4-boronic acidHCID 86670148HCID 86670148, Verbindung

Produkt 1

HCID 68195323HCID 68195323, VerbindungAusbeute 27 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)Katalysator

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

To a 2 mL microwave vial were added (R)-5-(2-chloro-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-5(6H)-yl)-2-methylpentan-2-yl acetate (PREPARATION x81, 148 mg, 0.401 mmol), indole-4-boronic acid (64.6 mg, 0.401 mmol) and [1,1′-bis(diphenylphosphino)ferrocene]-dichloropalladium(II) (16.50 mg, 0.020 mmol). The vial was evacuated and filled with nitrogen. After sealing the vial, dioxane (1600 μL) and saturated NaHCO3 (400 μL) were added. The mixture was then heated in a microwave to 120° C. for 45 minutes. After the mixture was cooled to room temperature, ACN (4 mL) was added and the mixture was filtered by syringe filter. The crude product was purified by preparatory HPLC using a gradient of 20-40% CH3CN (with 0.035% TFA) in H2O (with 0.05% TFA). The collected fractions were pooled, neutralized with NaHCO3, concentrated, and extracted with EtOAc. The combined organics were dried over MgSO4, filtered, and concentrated to give the title compound (48 mg, 27%). ESI-MS m/z [M+H]+ calc'd for C25H31N5O3, 450.25; found 450.3.

Aufarbeitung

  1. customThe vial was evacuated
  2. additionfilled with nitrogen
  3. additionwere added
  4. temperatureAfter the mixture was cooled to room temperature
  5. additionACN (4 mL) was added
  6. filtrationthe mixture was filtered by syringe
  7. filtrationfilter
  8. customThe crude product was purified by preparatory HPLC
  9. concentrationconcentrated
  10. extractionextracted with EtOAc
  11. dry with materialThe combined organics were dried over MgSO4
  12. filtrationfiltered
  13. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-3268ea5b3e5a4f4fbb773248891d3315
Quelldatensatz
uspto-grants-2015_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09045496B2

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