Water → HCID 69020209, Verbindung

HRID 1865094Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1865094
[CH2:1]([O:3][C:4]([C:6]1[N:7]([CH3:16])[C:8]([CH2:14][CH3:15])=[C:9]([C:12]#[N:13])[C:10]=1I)=[O:5])[CH3:2].[F:17][C:18]1[CH:39]=[CH:38][CH:37]=[CH:36][C:19]=1[O:20][C:21]1[CH:26]=[CH:25][C:24](B2OC(C)(C)C(C)(C)O2)=[CH:23][CH:22]=1.C(=O)([O-])[O-].[Na+].[Na+].O.O>O1CCOCC1.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[CH2:1]([O:3][C:4]([C:6]1[N:7]([CH3:16])[C:8]([CH2:14][CH3:15])=[C:9]([C:12]#[N:13])[C:10]=1[C:24]1[CH:23]=[CH:22][C:21]([O:20][C:19]2[CH:36]=[CH:37][CH:38]=[CH:39][C:18]=2[F:17])=[CH:26][CH:25]=1)=[O:5])[CH3:2]

Komponenten

7

Edukt 4

HCID 962WaterHCID 2735133Sodium Carbonate MonohydrateHCID 57975348HCID 57975348, VerbindungHCID 579753882-(4-(2-Fluorophenoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

Produkt 1

HCID 69020209HCID 69020209, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumKatalysatorHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

Combine 4-cyano-5-ethyl-3-iodo-1-methyl-1H-pyrrole-2-carboxylic acid ethyl ester (prepared in preparation 38, 0.46 mmol), 2-[4-(2-fluoro-phenoxy)-phenyl]-4,4,5,5-tetramethyl-[1,3,2]-dioxaborolane (1.3 Eq), tetrakis(triphenylphosphine)-palladium(0) (0.1 Eq) and 2.0 M sodium carbonate/water (6.5 Eq) in 1,4-dioxane (10 mL) and heat at −80° C. to 90° C. overnight. Let the reaction cool to room temperature and pour into water. Extract the quenched reaction mixture with ethyl acetate. Combine the organic extracts, wash with water, dry over potassium carbonate, filter, and concentrate under reduced vacuum. Purify the residue by silica gel chromatography (Chromatotron™) eluting with hexane/ethyl acetate 4:1 to provide the final title compound, 4-cyano-5-ethyl-3-[4-(2-fluoro-phenoxy)-phenyl]-1-methyl-1H-pyrole-2-carboxylic acid ethyl ester, as a tan solid. Mass spectrum (m/e): 393.1 (M*+1): (Bruker 300) 1H NMR (CDCl3) δ 7.27-7.31 (3H, d), 7.07-7.20 (3H, m), 6.95-6.99 (2H, d), 4.04-4.11 (2H, dd), 3.84-3.88 (3H, s), 2.74-2.86 (2H, dd), 1.23-1.34 (3H, t), 1.00-1.06 (3H, t).

Aufarbeitung

  1. extractionExtract
  2. customthe quenched reaction mixture with ethyl acetate
  3. washwash with water
  4. dry with materialdry over potassium carbonate
  5. filtrationfilter
  6. concentrationconcentrate under reduced vacuum
  7. customPurify the residue by silica gel chromatography (Chromatotron™)
  8. washeluting with hexane/ethyl acetate 4:1

Quellen und Nachweise

ORD-Eintrag
ord-3555ca1260d744309dc89535a77d5010
Quelldatensatz
uspto-grants-2009_12
Patentnummer
US07625932B2

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