N-methyl-2-pyrrolidone → 4-(Heptyloxy)benzonitrile

HRID 1622980Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1622980
Br[C:2]1[CH:7]=[CH:6][C:5]([O:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH3:15])=[CH:4][CH:3]=1.[CH3:16][N:17]1C(=O)CCC1>[C-]#N.[Zn+2].[C-]#N.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>[CH2:9]([O:8][C:5]1[CH:6]=[CH:7][C:2]([C:16]#[N:17])=[CH:3][CH:4]=1)[CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH3:15]

Komponenten

5

Edukt 2

HCID 13387N-methyl-2-pyrrolidoneHCID 5991021-(4-Bromophenoxy)heptane

Produkt 1

HCID 52310344-(Heptyloxy)benzonitrileAusbeute 73 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 11186Zinc cyanide (Zn(CN)2)KatalysatorHCID 178418397HCID 178418397, VerbindungKatalysator

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

Prepared using General Procedure 1: A stirred a solution of 1-bromo-4-(heptyloxy)benzene (2.0 g, 7.37 mmol), zinc cyanide (1.73 g, 14.74 mmol) and tetrakis(triphenylphosphine)palladium (76.12 mg, 0.07 mol) in dry NMP (20 mL) was degassed with N2. The reaction was heated to 100° C. for 18 h while stirring under nitrogen. The reaction mixture was cooled and poured into water (100 mL) and DCM (20 mL). The solid material was removed by filtration and the filtrate was extracted with water (3×20 mL). The organic layer was dried over MgSO4 and concentrated. The crude product was purified by chromatography (EA/hexanes) to afford 1.15 g (73%) of 4-(heptyloxy)benzonitrile as a light yellow solid. LCMS-ESI (m/z) calculated for C14H19NO: 217.1; found 218.1 [M+H]+, tR=11.14 min (Method 2). 1H NMR (400 MHz, CDCl3) δ 7.64-7.50 (m, 2H), 7.05-6.83 (m, 2H), 3.99 (t, J=6.5 Hz, 2H), 1.89-1.69 (m, 2H), 1.58-1.12 (m, 8H), 0.90 (dd, J=9.1, 4.5 Hz, 3H). 13C NMR (101 MHz CDCl3) δ 162.47, 133.91, 132.78, 132.12, 129.13, 119.31, 115.18, 103.58, 68.41, 31.73, 28.98, 25.89, 22.58, 14.07.

Aufarbeitung

  1. customPrepared
  2. customwas degassed with N2
  3. temperatureThe reaction mixture was cooled
  4. additionpoured into water (100 mL) and DCM (20 mL)
  5. customThe solid material was removed by filtration
  6. extractionthe filtrate was extracted with water (3×20 mL)
  7. dry with materialThe organic layer was dried over MgSO4
  8. concentrationconcentrated
  9. customThe crude product was purified by chromatography (EA/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-51dbb871e4fb44e5a36db010f540897f
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08778923B2

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