Dimethylformamide → HCID 57435845, Verbindung

HRID 30545

Reaktionsgleichung

Reaktionsgleichung von HRID 30545
[C:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1)#[CH:2].[F:9][CH:10]([F:19])[O:11][C:12]1[CH:17]=[CH:16][C:15](I)=[CH:14][CH:13]=1.CN(C)C=O.C(N(CC)CC)C>[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O>[F:9][CH:10]([F:19])[O:11][C:12]1[CH:17]=[CH:16][C:15]([C:2]#[C:1][C:3]2[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=2)=[CH:14][CH:13]=1

Komponenten

8

Edukt 4

HCID 6228DimethylformamideHCID 8471TriethylamineHCID 10821PhenylacetyleneHCID 27370081-(Difluoromethoxy)-4-iodobenzene

Produkt 1

HCID 57435845HCID 57435845, VerbindungAusbeute 76,4 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

Into a mixture of ethynylbenzene (1.9 g, 18.5 mmol), 1-(difluoromethoxy)-4-iodobenzene (5 g, 18.5 mmol), N,N-dimethylformamide (35 mL), and triethylamine (12.8 mL, 92.6 mmol) was introduced anhydrous argon for 5 minutes. Then, copper(I) iodide (1.85 mmol, 351 mg) and dichlorobis(triphenylphosphine)palladium(II) (1.11, 0.71 g) were added into the mixture and the new mixture was stirred at 60° C. for 3 hours. The mixture cooled to room temperature, poured into water and extracted with ethyl ether. The organic extracts were dried over MgSO4. Evaporation and purification on silica gel (ISCO) using hexanes/EtOAc (100/1) as the eluting solvent, gave 1-(difluoromethoxy)-4-(phenylethynyl)benzene as a clear oil (3.45 g, 76% yield). MS m/e M+ 244; 1H NMR (400 MHz, DMSO-d6) 7.2 (d, J=8.78 Hz, 2H), 7.28-7.45 (m, 4H), 7.5-7.55 (m, 2H), 7.6 (d, J=7.78 Hz, 2H).

Aufarbeitung

  1. additionwas introduced anhydrous argon for 5 minutes
  2. temperatureThe mixture cooled to room temperature
  3. extractionextracted with ethyl ether
  4. dry with materialThe organic extracts were dried over MgSO4
  5. customEvaporation and purification on silica gel (ISCO)

Quellen und Nachweise

ORD-Eintrag
ord-b41d6759d10b4b0cbed807edb4d0b8d3
Quelldatensatz
uspto-grants-2008_09
Patentnummer
US07423158B2

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