4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2-oxazole → 6-(Isoxazol-4-yl)-3-(4-piperidin-1-ylmethylphenyl)-9H-dipyrido[2,3-b;4',3'-d]pyrrole

HRID 1888598Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1888598
Br[C:2]1[N:10]=[CH:9][C:8]2[NH:7][C:6]3[N:11]=[CH:12][C:13]([C:15]4[CH:20]=[CH:19][C:18]([CH2:21][N:22]5[CH2:27][CH2:26][CH2:25][CH2:24][CH2:23]5)=[CH:17][CH:16]=4)=[CH:14][C:5]=3[C:4]=2[CH:3]=1.CC1(C)C(C)(C)OB([C:36]2[CH:37]=[N:38][O:39][CH:40]=2)O1>C([O-])(=O)C.[K+].C(#N)C.C(Cl)Cl.CO>[O:39]1[CH:40]=[C:36]([C:2]2[N:10]=[CH:9][C:8]3[NH:7][C:6]4[N:11]=[CH:12][C:13]([C:15]5[CH:20]=[CH:19][C:18]([CH2:21][N:22]6[CH2:23][CH2:24][CH2:25][CH2:26][CH2:27]6)=[CH:17][CH:16]=5)=[CH:14][C:5]=4[C:4]=3[CH:3]=2)[CH:37]=[N:38]1

Komponenten

7

Edukt 2

HCID 164141804-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2-oxazoleHCID 582663876-Bromo-3-(4-piperidin-1-ylmethyl-phenyl)-9H-dipyrido[2,3-b;4',3'-d]pyrrole

Produkt 1

HCID 445455506-(Isoxazol-4-yl)-3-(4-piperidin-1-ylmethylphenyl)-9H-dipyrido[2,3-b;4',3'-d]pyrroleAusbeute 13,6 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 887MethanolLösungsmittelHCID 6342AcetonitrileLösungsmittelHCID 6344DichloromethaneLösungsmittelHCID 517044Potassium AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

A mixture of 6-bromo-3-(4-piperidin-1-ylmethylphenyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole (130 mg, 0.18 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoxazole (140 mg, 0.74 mmol), 1,1′-[bis(diphenylphosphino)ferrocene]-dichloropalladium(II) (18 mg, 0.002 mmol) in 1N aqueous potassium acetate solution (0.62 mL) and acetonitrile (3 mL) was heated under microwave irradiation at 85° C. for 18 minutes. The cooled reaction mixture was diluted with DCM (20 mL) and methanol (2 mL) and washed with water (15 mL). The organic phase was separated, dried over sodium sulfate, filtered and evaporated in vacuo to afford a residue that was purified by preparative HPLC [0-30% MeCN in water (0.1% formic acid) over 30 min, 35 mL/min] to afford the title compound as a beige solid (10 mg, 10%). 1H NMR (DMSO-D6, 400 MHz): 12.32 (s, 1H), 9.47 (s, 1H), 9.18 (s, 1H), 8.95 (s, 1H), 8.94 (d, J=2.3 Hz, 1H), 8.89 (d, J=2.2 Hz, 1H), 8.68 (s, 1H), 7.76 (d, J=8.1 Hz, 2H), 7.45 (d, J=8.1 Hz, 2H), 3.50 (s, 2H), 2.37 (s, 4H), 1.52 (m, 4H), 1.41 (m, 2H). LCMS (Method D): RT=6.55 min, M+H+=410.

Aufarbeitung

  1. customThe cooled reaction mixture
  2. washwashed with water (15 mL)
  3. customThe organic phase was separated
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated in vacuo
  7. customto afford a residue that
  8. customwas purified by preparative HPLC [0-30% MeCN in water (0.1% formic acid) over 30 min, 35 mL/min]

Quellen und Nachweise

ORD-Eintrag
ord-dabaa67d0d6a4068b04c1d78d466980e
Quelldatensatz
uspto-grants-2013_08
Patentnummer
US08501765B2

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