Acetic Anhydride → 4-Ethoxymethylene-2,6-dimethyl-3,5-heptanedione

HRID 393161

Reaktionsgleichung

Reaktionsgleichung von HRID 393161
[CH3:1][CH:2]([C:4](=[O:11])[CH2:5][C:6](=[O:10])[CH:7]([CH3:9])[CH3:8])[CH3:3].[CH:12]([O-])([O-])[O:13][CH2:14][CH3:15].C(OC(=O)C)(=O)C>>[CH2:14]([O:13][CH:12]=[C:5]([C:6](=[O:10])[CH:7]([CH3:9])[CH3:8])[C:4](=[O:11])[CH:2]([CH3:1])[CH3:3])[CH3:15]

Komponenten

4

Edukt 3

HCID 7918Acetic AnhydrideHCID 875973,5-Heptanedione, 2,6-dimethyl-HCID 53630039Ethylorthoformate

Produkt 1

HCID 226487654-Ethoxymethylene-2,6-dimethyl-3,5-heptanedioneAusbeute 49,2 %

Versuchsvorschrift

A mixture comprising 17.2 g (110 mmol) of 2,6-dimethyl-3,5-heptanedione, 22.8 g (153 mmol) of ethyl orthoformate and 31.5 g (309 mmol) of acetic anhydride, was reacted for 2 hours at 110° C. The solvent was distilled off under reduced pressure to obtain 11.5 g (yield: 49%) of 4-ethoxymethylene-2,6-dimethyl-3,5-heptanedione.

Aufarbeitung

  1. distillationThe solvent was distilled off under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-c3b1d189afcf481999b8b4b766aaf838
Quelldatensatz
uspto-grants-2004_10
Patentnummer
US06806230B1

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