(2,3,5,6-tetrafluoro-4-methylphenyl)methyl (1R)-trans-3-formyl-2,2-dimethylcyclopropanecarboxylate → Fairytale

HRID 1976309Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1976309
[CH3:1][C:2](C)([O-])C.[K+].[CH:7]([C@@H:9]1[C@@H:11]([C:12]([O:14][CH2:15][C:16]2[C:21]([F:22])=[C:20]([F:23])[C:19]([CH3:24])=[C:18]([F:25])[C:17]=2[F:26])=[O:13])[C:10]1([CH3:28])[CH3:27])=O>[Br-].C([P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)C.O1CCCC1>[CH3:27][C:10]1([CH3:28])[C@H:9](/[CH:7]=[CH:1]\[CH3:2])[C@H:11]1[C:12]([O:14][CH2:15][C:16]1[C:21]([F:22])=[C:20]([F:23])[C:19]([CH3:24])=[C:18]([F:25])[C:17]=1[F:26])=[O:13]

Komponenten

5

Edukt 2

HCID 15451879(2,3,5,6-tetrafluoro-4-methylphenyl)methyl (1R)-trans-3-formyl-2,2-dimethylcyclopropanecarboxylateHCID 23665647Potassium tert-butoxide

Produkt 1

HCID 23731026FairytaleAusbeute 67 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 73727Phosphonium, ethyltriphenyl-, bromide (1:1)KatalysatorHCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

A mixture of 1.1 g of ethyltriphenylphosphonium bromide and 30 ml of terahydrofuran was cooled by ice and 0.23 g of potassium tert-butoxide was added to the mixture under stirring. After 15 minutes, a tetrahydrofuran (5 ml) solution containing 0.32 g of (2,3,5,6-tetrafluoro-4-methylphenyl)methyl (1R)-trans-3-formyl-2,2-dimethylcyclopropanecarboxylate was added to the mixture. After 30 minutes, the reaction mixture was filtered with celite and the filtrate was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography (eluent: hexane/ethyl acetate=20/1) to give 0.22 g of (2,3,5,6-tetrafluoro-4-methylphenyl)methyl(1R)-trans-2,2-dimethyl-3-((Z)-1-propenyl)cyclopropanecarboxylate

Aufarbeitung

  1. additionwas added to the mixture
  2. additionwas added to the mixture
  3. waitAfter 30 minutes
  4. filtrationthe reaction mixture was filtered with celite
  5. concentrationthe filtrate was concentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-404ab1dd152a4a6fb640c8da731a71dc
Quelldatensatz
uspto-grants-2001_05
Patentnummer
US06225495B1

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