Methyl-2-naphthylether

Bezeichnung:Methyl-2-naphthylether

CAS-Nr93-04-9

Englisch Name:2-Methoxynaphthalene

CBNumberCB3483471

SummenformelC11H10O

Molgewicht158.2

MOL-Datei93-04-9.mol

Synonyma

Methyl-2-naphthylether

Methyl-2-naphthylether physikalisch-chemischer Eigenschaften

Schmelzpunkt	70-73 °C (lit.)
Siedepunkt	274 °C (lit.)
Dichte	1.064 g/mL at 25 °C (lit.)
Dampfdruck	1.097Pa at 25℃
Brechungsindex	1.5440 (estimate)
FEMA	4704 \| BETA-NAPHTHYL METHYL ETHER
Flammpunkt	272-274°C
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	H2O: soluble (completely)
pka	0[at 20 ℃]
Aggregatzustand	Crystalline Solid
Farbe	White to yellow-brown
Geruch (Odor)	at 1.00 % in dipropylene glycol. sweet naphthyl floral orange blossom acacia neroli
Geruchsart	naphthyl
Biologische Quelle	synthetic
Wasserlöslichkeit	INSOLUBLE
Merck	14,5997
JECFA Number	1257
BRN	1859408
Stabilität	Stable. Combustible. Incompatible with strong oxidizing agents.
Kosmetik-Inhaltsstoffe Funktionen	PERFUMING
InChI	1S/C11H10O/c1-12-11-7-6-9-4-2-3-5-10(9)8-11/h2-8H,1H3
InChIKey	LUZDYPLAQQGJEA-UHFFFAOYSA-N
SMILES	COc1ccc2ccccc2c1
LogP	3.318 at 25℃
CAS Datenbank	93-04-9(CAS DataBase Reference)
NIST chemische Informationen	Naphthalene, 2-methoxy-(93-04-9)
EPA chemische Informationen	Naphthalene, 2-methoxy- (93-04-9)

Sicherheit

S-Sätze:	22-24/25
RIDADR	UN 3077 9 / PGIII
WGK Germany	2
RTECS-Nr.	QJ9468750
TSCA	TSCA listed
HazardClass	9
HS Code	29093090
Speicherklasse	11 - Combustible Solids
Hazard Classifications	Aquatic Chronic 2 Eye Irrit. 2
Toxizität	LD50 oral in rat: > 5gm/kg

Gefahreninformationscode (GHS)

2-Methoxynaphthalene Chemische Eigenschaften,Einsatz,Produktion Methoden

S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Beschreibung
β-Naphthyl methyl ether has an intensely sweet, floral odor suggestive of orange blossoms. It is free from naphthol by-odor. It has a sweet, strawberry taste. This may be prepared from potassium β-naphthol and methyl chloride at 300°C; by methylation of β-naphthol with dimethyl sulfate or by direct esterification with methyl alcohol.
Chemische Eigenschaften
β-Naphthyl methyl ether has an intensely sweet, floral odor suggestive of orange blossoms; free from naphthol by-odor. It has a sweet, strawberry taste
Chemische Eigenschaften
Methyl 2-Naphthyl Ether forms white crystals (mp 73–74°C) with an intense orange blossom odor.
Chemische Eigenschaften
white powder
Verwenden
2-methoxynaphthalene acylation was used as a model reaction to study the catalytic benefits of delamination. It was also used to study the alkali-metal-mediated manganation (AMMMn) reactions.
Verwenden
2-methoxynaphthalene acylation is used as a model reaction to study the catalytic benefits of delamination. It was also used to study the alkali-metal-mediated manganation (AMMMn) reactions.
Verwenden
2-Methoxynaphthalene is an Impurity of the non-steroidal anti-inflammatory Naproxen (N377525).
synthetische
From postassium β-naphthol and methyl chloride at 300°C; by methylation of β-naphthlol with dimethyl sulfate or by direct esterification with methyl alcohol
Definition
ChEBI: 2-Methoxynaphthalene is a member of naphthalenes.
Synthesis Reference(s)
Tetrahedron, 48, p. 6439, 1992 DOI: 10.1016/S0040-4020(01)88233-8
Tetrahedron Letters, 22, p. 3463, 1981 DOI: 10.1016/S0040-4039(01)81932-8
Flammability and Explosibility
Not classified
Synthese
Preparation of 2-Methoxynaphthalene from 2-naphthol.
Principle: Phenols can be methylated to give methyl ethers. Methylation can be done either by using diazomethane or dimethyl sulphate in alkaline medium.
Reaction:

Procedure: Take 0.5 g 2-naphthol and 0.2 g NaOH in 5 ml distilled water in a beaker (25 ml). Heat on a wire gauze to obtain a clear solution. Cool the solution (10-15°C) and then add 0.35 ml dimethyl sulphate drop wise. After the addition is over, warm the mixture for one hour at 70-80°C and then cool. Filter the product and wash it with 10% sodium hydroxide solution and then with water. Dry the product, record the practical yield and re-crystallize it.
Re-crystallization: Dissolve the crude product in minimum amount of ethyl alcohol in a beaker by heating on a water bath. Filter the hot solution and cool the filtrate. Filter the white crystals of the product. Dry and record the melting point and TLC (using toluene as solvent).
läuterung methode
Fractionally distil the ether under vacuum. Crystallise it from absolute EtOH, aqueous EtOH, *C6H6, pet ether or n-heptane, and dry it under vacuum in an Abderhalden pistol or distil it in vacuo. The picrate has m 118o (from EtOH or CHCl3). [Kikuchi et al. J Phys Chem 91 574 1987, Beilstein 6 III 2969, 6 IV 4257.]

2-Methoxynaphthalene Upstream-Materialien And Downstream Produkte

Methyl-2-naphthylether Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

93-04-9, 2-Methoxynaphthalene Verwandte Suche:

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