Triphenylphosphine → HCID 178500264, Verbindung

HRID 976472

Reaktionsgleichung

Reaktionsgleichung von HRID 976472
[CH3:1][O:2][C:3](=[O:13])[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][Br:12].[C:14]1([P:20]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>CC#N>[CH3:1][O:2][C:3](=[O:13])[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][PH:20]([C:21]1[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=1)([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1.[Br-:12]

Komponenten

4

Edukt 2

HCID 11776Triphenylphosphine2×HCID 554142Methyl 9-bromononanoate

Produkt 1

HCID 178500264HCID 178500264, VerbindungAusbeute 91,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

A solution of 13 (1.02 g, 4.06 mmol, 10 equiv) in CH3CN (3.5 mL 1.16M) was treated with triphenylphosphine (1.17 g, 4.47 mmol, 1.1 equiv) and stirred at reflux for 10 h. Additional triphenylphosphine (0.532 g, 2.03 mmol, 0.5 equiv) was added to the reaction mixture and stirring was continued at reflux for 5 h. The reaction mixture was concentrated under reduced pressure and washed repeatedly with Et2O (5×10 mL washes). The remaining residue was then solubilized in the minimum volume of CH2Cl2 and concentrated under reduced pressure to afford 14 as a colorless foam (1.90 g, 2.08 g theoretical, 91.3%): 1H NMR (CDCl3, 250 MHz) δ7.82-7.51 (m, 15H, ArH), 3.70-3.46 (m, 5H, CH3OC(O)R and CH2PPh3), 2.13 (t, 2H, J=7.4 Hz, CH2C(O)OCH3), 1.62-1.02 (m, 12H, alkyl protons); FABHRMS (NBA) m/e 433.2312 (C28H34BrO2P--Br- requires 433.2296).

Aufarbeitung

  1. temperatureat reflux for 10 h
  2. stirringstirring
  3. temperatureat reflux for 5 h
  4. concentrationThe reaction mixture was concentrated under reduced pressure
  5. washwashed repeatedly with Et2O (5×10 mL washes)
  6. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-c6f2b19c1a1440289099bac653c68927
Quelldatensatz
uspto-grants-1997_03
Patentnummer
US05612380

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