3,5-Dimethoxytoluol

Bezeichnung:3,5-Dimethoxytoluol

CAS-Nr4179-19-5

Englisch Name:3,5-Dimethoxytoluene

CBNumberCB0230254

SummenformelC9H12O2

Molgewicht152.19

MOL-Datei4179-19-5.mol

Synonyma

3,5-Dimethoxytoluol

3,5-Dimethoxytoluol physikalisch-chemischer Eigenschaften

Schmelzpunkt	61-62 C
Siedepunkt	244 °C (lit.)
Dichte	1.039 g/mL at 25 °C (lit.)
Brechungsindex	n20/D 1.522(lit.)
Flammpunkt	215 °F
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	Chloroform (Sparingly), Methanol (Sparingly)
Aggregatzustand	Liquid
Wichte	1.039
Farbe	Clear colorless to yellow
Geruch (Odor)	Warm and sweet, nut-like, earthy-mossy odor
BRN	2043558
LogP	2.897 (est)
CAS Datenbank	4179-19-5(CAS DataBase Reference)
NIST chemische Informationen	3,5-Dimethoxytoluene(4179-19-5)
EPA chemische Informationen	3,5-Dimethoxytoluene (4179-19-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36
WGK Germany	3
TSCA	Yes
HS Code	29093090

Gefahreninformationscode (GHS)

3,5-Dimethoxytoluene Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
Clear colorless to yellow liquid
Verwenden
3,5-Dimethoxytoluene (DMT) may be used in the synthesis of 3,5-dimethoxybenzoic acid by oxidation and 2-methoxy-6-methyl-1,4-benzoquinone by catalytic oxidation with hydrogen peroxide (H₂O₂)/methyltrioxorhenium (CH₃ReO₃) in dimethyl carbonate (DMC).
Verwenden
3,5-Dimethoxytoluene has been suggested for use in perfume compositions as supporting note for Oakmoss and Vetiver, and as a novel note in Chypre, Fougere and Oriental fragrance types.
Definition
ChEBI: 3,5-dimethoxytoluene is a member of the class of toluenes that is toluene in which the hydrogens at positions 3 and 5 have been replaced by methoxy groups. It is the major scent compound of many rose varieties. It has a role as a fragrance and a plant metabolite. It is a member of toluenes and a member of methoxybenzenes.
Vorbereitung Methode
3,5-Dimethoxytoluene can be produced from Orcinol in weak aqueous alkali with Dimethylsulfate at controlled temperature.
Synthesis Reference(s)
Organic Syntheses, Coll. Vol. 6, p. 859, 1988
The Journal of Organic Chemistry, 70, p. 3275, 2005 DOI: 10.1021/jo050075r
Allgemeine Beschreibung
3,5-Dimethoxytoluene (DMT) is a methoxylated phenolic derivative. It is reported to be one of the main constituent of the floral volatiles in different rose varieties. It has been biosynthesized from orcinol by two successive methylation catalyzed by O-methyltransferases (OMTs). The features of its aerobic oxidation with metal/bromide catalysts have been investigated.
Synthese
A solution of dry orcinol (14.2 g,0.115 mole) in dry anhydrous acetone(150 ml) containing anhydrous potassium carbonate (45 g) is refluxed withdimethyl sulphate (23.6 ml，31.46 g, 0.25 mole) for 4 hr. The dimethylsulphate is added in small lots of 5 ml. After refluxing, the solution isfiltered and the inorganic residue washed with hot acetone (2 x 25 ml).The combined acetone solution is distilled and the residue macerated withcrushed ice. It is extracted with ether, the ether extract dried (anhydroussodium sulphate) and distilled. Yield 14.2 g (81.6%).B.p.102° (8 mm)

3,5-Dimethoxytoluene Upstream-Materialien And Downstream Produkte

3,5-Dimethoxytoluol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

4179-19-5, 3,5-Dimethoxytoluene Verwandte Suche:

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