Cesium fluoride → Ethyl 2-(5-chloro-6-(2,2,2-trifluoroethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)-4-methylpentanoate

HRID 1512389Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1512389
Br[C:2]1[CH:3]=[C:4]([CH:15]([CH2:21][CH:22]([CH3:24])[CH3:23])[C:16]([O:18][CH2:19][CH3:20])=[O:17])[CH:5]=[C:6]([Cl:14])[C:7]=1[O:8][CH2:9][C:10]([F:13])([F:12])[F:11].[F:25][C:26]([F:37])([F:36])[C:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1.[F-].[Cs+]>COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:14][C:6]1[CH:5]=[C:4]([CH:15]([CH2:21][CH:22]([CH3:24])[CH3:23])[C:16]([O:18][CH2:19][CH3:20])=[O:17])[CH:3]=[C:2]([C:30]2[CH:31]=[CH:32][C:27]([C:26]([F:37])([F:36])[F:25])=[CH:28][CH:29]=2)[C:7]=1[O:8][CH2:9][C:10]([F:13])([F:12])[F:11]

Komponenten

6

Edukt 3

HCID 25953Cesium fluorideHCID 27343894-(Trifluoromethyl)phenylboronic acidHCID 57995655Ethyl 2-(3-bromo-5-chloro-4-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate

Produkt 1

HCID 57995551Ethyl 2-(5-chloro-6-(2,2,2-trifluoroethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)-4-methylpentanoateAusbeute 74 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 80711,2-DimethoxyethaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A mixture of ethyl 2-(3-bromo-5-chloro-4-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate (1 g, 1 eq), 4-Trifluoromethyl phenylboronic acid (2.6 g, 1.4 eq), Pd(PPh3)4 (1.3 g, 0.1 eq) and Cesium Fluoride (13.1 g, 2 eq) in DME (30 ml) was stirred for overnight at 100° C. Upon completion, the precipitate was removed by filtration. The filtrate was diluted with water and extracted with ethyl acetate (2×50 mL). The combined organic layers were washed with water followed by brine, dried over Na2SO4 and concentrated under vacuo. The residue was purified by Flash Column Chromatography to give ethyl 2-(5-chloro-6-(2,2,2-trifluoroethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)-4-methylpentanoate in 74% yield (1.08 g). 1H NMR (CDCl3, 400 MHz): 7.68 (m, 5H), 7.43 (s, 1H); 7.24 (s, 1H); 4.4 (q, 2H), 4.13 (q, 2H); 3.55 (t, 1H); 1.93 (m, 1H), 1.58 (m, 1H); 1.45 (m, 1H); 1.24 (t, 3H), 0.92 (d, 6H);

Aufarbeitung

  1. customUpon completion, the precipitate was removed by filtration
  2. additionThe filtrate was diluted with water
  3. extractionextracted with ethyl acetate (2×50 mL)
  4. washThe combined organic layers were washed with water
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated under vacuo
  7. customThe residue was purified by Flash Column Chromatography

Quellen und Nachweise

ORD-Eintrag
ord-64dc5d9cf923475997179077013379f9
Quelldatensatz
uspto-grants-2012_07
Patentnummer
US08217064B2

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