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Sodium Carbonate → Tert-butyl 4-(4-aminofuro[3,2-c]pyridin-3-yl)-2-methoxyphenylcarbamate

HRID 17190
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 17190
Br[C:2]1[C:6]2[C:7]([NH2:11])=[N:8][CH:9]=[CH:10][C:5]=2[O:4][CH:3]=1.[CH3:12][O:13][C:14]1[CH:19]=[C:18](B2OC(C)(C)C(C)(C)O2)[CH:17]=[CH:16][C:15]=1[NH:29][C:30](=[O:36])[O:31][C:32]([CH3:35])([CH3:34])[CH3:33].C(=O)([O-])[O-].[Na+].[Na+]>COCCOC.O>[NH2:11][C:7]1[C:6]2[C:2]([C:18]3[CH:17]=[CH:16][C:15]([NH:29][C:30](=[O:36])[O:31][C:32]([CH3:33])([CH3:34])[CH3:35])=[C:14]([O:13][CH3:12])[CH:19]=3)=[CH:3][O:4][C:5]=2[CH:10]=[CH:9][N:8]=1
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Komponenten

6

Edukt 3

HCID 10340Sodium CarbonateHCID 177502214-(tert-Butoxycarbonylamino)-3-methoxyphenylboronic acid, pinacol esterHCID 184507953-Bromofuro[3,2-c]pyridin-4-amine

Produkt 1

HCID 18451465Tert-butyl 4-(4-aminofuro[3,2-c]pyridin-3-yl)-2-methoxyphenylcarbamateAusbeute 98,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962
Water
Lösungsmittel
HCID 80711,2-DimethoxyethaneLösungsmittel

Versuchsvorschrift

A mixture of 3-bromofuro[3,2-c]pyridin-4-amine (0.443 g, 2.1 mmol) in 1,2-dimethoxyethane (16 mL) and water (8 mL) was treated with tert-butyl N-[2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]carbamate (0.872 g, 2.5 mmol,), sodium carbonate (0.749 g, 7.1 mmol) and tetrakis triphenylphosphine palladium (0) (0.144 g, 0.12 mmol) at 80° C. for 18 hours. The organic solvent was removed in vacuo and the aqueous mixture was extracted with ethyl acetate (3×10 mL). The combined organic phases were dried over anhydrous magnesium sulfate and the solvent was removed in vacuo. The residue was purified by flash column chromatography on silica gel using heptane/ethyl acetate (4:1) followed by ethyl acetate as an eluents to give the title compound (0.734 g, 85%) as a tan solid. 1H NMR (DMSO-d6, 400 MHz) δ 8.07 (s, 1H), 7.96 (s, 1H), 7.87 (d, 1H), 7.84 (d, 1H), 7.14 (d, 1H), 7.05 (dd, 1H), 6.94 (d, 1H), 5.55-5.62 (bs, 2H), 3.87 (s, 3H), 1.48 (s, 9H); RP-HPLC (Conditions f) Rt 12.13 min.; MS: MH+ 356.

Aufarbeitung

  1. customThe organic solvent was removed in vacuo
  2. extractionthe aqueous mixture was extracted with ethyl acetate (3×10 mL)
  3. dry with materialThe combined organic phases were dried over anhydrous magnesium sulfate
  4. customthe solvent was removed in vacuo
  5. customThe residue was purified by flash column chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-cb60fdf420d446ce970bc1dc2f15f502
Quelldatensatz
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07737160B2

Notizen zur Reaktion

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