Methyltriphenylphosphonium iodide → 3,5-Bis(3',5'-di-t-butylstyryl)styrene

HRID 2085890Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2085890
[I-].[CH3:2][P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.CC(C)([O-])C.[K+].[C:28]([C:32]1[CH:33]=[C:34]([CH:61]=[C:62]([C:64]([CH3:67])([CH3:66])[CH3:65])[CH:63]=1)[CH:35]=[CH:36][C:37]1[CH:38]=[C:39]([CH:42]=[C:43]([CH:45]=[CH:46][C:47]2[CH:52]=[C:51]([C:53]([CH3:56])([CH3:55])[CH3:54])[CH:50]=[C:49]([C:57]([CH3:60])([CH3:59])[CH3:58])[CH:48]=2)[CH:44]=1)[CH:40]=O)([CH3:31])([CH3:30])[CH3:29]>O1CCCC1>[C:28]([C:32]1[CH:33]=[C:34]([CH:61]=[C:62]([C:64]([CH3:67])([CH3:66])[CH3:65])[CH:63]=1)[CH:35]=[CH:36][C:37]1[CH:38]=[C:39]([CH:42]=[C:43]([CH:45]=[CH:46][C:47]2[CH:52]=[C:51]([C:53]([CH3:56])([CH3:55])[CH3:54])[CH:50]=[C:49]([C:57]([CH3:60])([CH3:59])[CH3:58])[CH:48]=2)[CH:44]=1)[CH:40]=[CH2:2])([CH3:31])([CH3:30])[CH3:29]

Komponenten

5

Edukt 3

HCID 638159Methyltriphenylphosphonium iodideHCID 23665647Potassium tert-butoxideHCID 540286873,5-Bis[2-(3,5-di-tert-butylphenyl)ethenyl]benzaldehyde

Produkt 1

HCID 538517063,5-Bis(3',5'-di-t-butylstyryl)styreneAusbeute 99 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

Dry tetrahydrofuran (300 ml) was added to a mixture of methyltriphenylphosphonium iodide (17.00 g, 42.0 mmoles) and potassium t-butoxide (4.72 g, 42.0 mmoles) and stirred at room temperature for 10 minutes. 3,5-bis(3′,5′-di-t-butylstyryl)benzaldehyde (17.00 g, 42.0 mmoles) was then added and the reaction mixture was stirred at room temperature for 75 minutes. The solvent was then evaporated and the remaining sludge was triturated with dichloromethane—pet.ether (40-60) (1:9) and filtered through silica, rinsing thoroughly with the same solvent mixture. The solvent was evaporated to give 3,5-bis(3′,5′-di-t-butylstyryl)styrene (14.83 g, 99%), mp 150° C. (Found: C, 90.03; H, 9.98. C40H52 requires C, 90.16; H, 9.84%); λmax (CHCl3)/nm 318 (ε/dm3 mol-1 cm-1 68500); δH(500 MHz; CDCl3) 1.39 (36 H, s, tBu), 5.34 (1 H, d, J 11, 8-H), 5.88 (1 H, d, J 18, 8-H), 6.79 (1 H, dd, J 11 and 18, 7-H), 7.15 (2 H, d, J 16, 7′-H), 7.25 (2H, d, J 16, 8′-H), 7.38 (2 H, t, J 1.75, 1′-H), 7.42 (4 H, d, J 1.75, 3′,5′-H), 7.49 (2 H, d, J 1.3, 3,5-H), 7.63 (1H, m, 1-H).

Aufarbeitung

  1. stirringthe reaction mixture was stirred at room temperature for 75 minutes
  2. customThe solvent was then evaporated
  3. customthe remaining sludge was triturated with dichloromethane—pet
  4. filtrationether (40-60) (1:9) and filtered through silica
  5. washrinsing thoroughly with the same solvent mixture
  6. customThe solvent was evaporated

Quellen und Nachweise

ORD-Eintrag
ord-d08dffb2bf434503a14d6ae83d659690
Quelldatensatz
uspto-grants-2004_04
Patentnummer
US06720093B2

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