Ethylene Glycol → 2-[2-(Methylsulfanyl)ethyl]-1,3-dioxolane

HRID 27823

Reaktionsgleichung

Reaktionsgleichung von HRID 27823
[CH3:1][S:2][CH2:3][CH2:4][CH:5]=[O:6].[CH2:7](O)[CH2:8][OH:9].C1(C)C=CC(S(O)(=O)=O)=CC=1.C(=O)([O-])[O-].[Na+].[Na+]>O.O1CCOCC1.C1C=CC=CC=1>[CH3:1][S:2][CH2:3][CH2:4][CH:5]1[O:9][CH2:8][CH2:7][O:6]1

Komponenten

8

Edukt 4

HCID 174Ethylene GlycolHCID 6101p-Toluenesulfonic acidHCID 10340Sodium CarbonateHCID 18635Methional

Produkt 1

HCID 203986662-[2-(Methylsulfanyl)ethyl]-1,3-dioxolane

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 241BenzeneLösungsmittelHCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

1040 g (10 moles) of freshly distilled methional, 650 g (10.5 moles) of ethylene glycol, 400 cc of benzene, 800 cc of dioxan and 10 g of p-toluene sulphonic acid are heated under reflux until the azeotropic entrainment of the water formed during the reaction, which takes 2 hours, is over. The acid medium is then neutralised by the addition of 10 g of dry sodium carbonate, after which the solution is concentrated to dryness in a water pump vacuum.

Aufarbeitung

  1. customformed during the reaction, which
  2. concentrationafter which the solution is concentrated to dryness in a water pump vacuum

Quellen und Nachweise

ORD-Eintrag
ord-b2697c3787e841e894f29b50e8b016e9
Quelldatensatz
uspto-grants-1980_09
Patentnummer
US04224051

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