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HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
HRID 724503Erstellt: 24. Oktober 2026

Toluene → 2-Cyclopenten-1-one, 3-methyl-2-(3-methyl-2-butenyl)-

https://huagongshe.com/de/reaction/724503

Reaktionsgleichung

Beteiligte Stoffe

RolleNameHCIDEinwaage
EduktTolueneHCID 1140—
Edukt1-Chloro-3-methyl-2-buteneHCID 10429—
EduktSodium HydroxideHCID 14798—
Edukt3-Methyl-2-cyclopenten-1-oneHCID 17691—
LösungsmittelAcetic AcidHCID 176—
LösungsmittelWaterHCID 962—
Produkt2-Cyclopenten-1-one, 3-methyl-2-(3-methyl-2-butenyl)-HCID 1475848749,9%

Reaktionsbedingungen

Temperatur100 °C

Reaktionsschritte

A mixture of 3-methyl-2-cyclopentenone 24.5 g (0.25 mole) and prenyl chloride 54 g (0.51 mole) was fed into a reaction flask containing 30 ml of toluene, sodium hydroxide 21.3 g, water 21.3 g and Aliquat 3361 g maintaining 100° C. The reaction mass was aged for 4 hours, cooled to 25° C. and neutralized with acetic acid. The organic layer was removed and distilled to give 20.5 g of 3-methyl-2-(3-methyl-2-butenyl)-2-cyclopenten-1-one. The 3-methyl-2-(3-methyl-2-butenyl)-2-cyclopenten-1-one had a Bp of 115° C. at 5 mmHg.

Herkunft & Nachweise

DOI10.6084/m9.figshare.5104873.v1
PatentnummerUS07141699B1
Quelldatensatzuspto-grants-2006_11
ORD IDord-d977d7122b3c408e9f4a159f50ca227d
Quellennotizuspto-grants-2006_11