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3,4-Dimethoxyphenol

3,4-Dimethoxyphenol Struktur
2033-89-8
CAS-Nr.
2033-89-8
Bezeichnung:
3,4-Dimethoxyphenol
Englisch Name:
3,4-Dimethoxyphenol
Synonyma:
Phenol, 3,4-dimethoxy-;NSC 140927;3,4-Dimethoxyphel;4-HYDROXYVERATROLE;3,4-DIMETHOXYPHENOL;3,4-dimethoxy-pheno;3,4-diMethoxyphenoxyl;3,4-Dimethoxyphenol >3,4-Dimethoxyphenol,97%;3,4-Bis(Methyloxy)phenol
CBNumber:
CB2354549
Summenformel:
C8H10O3
Molgewicht:
154.16
MOL-Datei:
2033-89-8.mol

3,4-Dimethoxyphenol Eigenschaften

Schmelzpunkt:
79-82 °C (lit.)
Siedepunkt:
167°C/14mm
Dichte
1.1690 (rough estimate)
Brechungsindex
1.4740 (estimate)
Flammpunkt:
167°C/14mm
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
L?slichkeit
Chloroform (Slightly), Methanol (Slightly)
Aggregatzustand
Fine Crystalline Powder
pka
10.08±0.18(Predicted)
Farbe
Off-white to light beige
Wasserl?slichkeit
Soluble in water.
Sensitive 
Light Sensitive
BRN 
1366650
InChI
1S/C8H10O3/c1-10-7-4-3-6(9)5-8(7)11-2/h3-5,9H,1-2H3
InChIKey
SMFFZOQLHYIRDA-UHFFFAOYSA-N
SMILES
COc1ccc(O)cc1OC
LogP
1.157 (est)
CAS Datenbank
2033-89-8(CAS DataBase Reference)
NIST chemische Informationen
Phenol, 3,4-dimethoxy-(2033-89-8)
EPA chemische Informationen
3,4-Dimethoxyphenol (2033-89-8)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xi
R-S?tze: 36/37/38
S-S?tze: 26-36-37/39
WGK Germany  3
10
TSCA  TSCA listed
HS Code  29095000
Speicherklasse 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
Bildanzeige (GHS) Exclamation Mark (GHS07)
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung P264, P280, P305+P351+P338,P337+P313P
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung
Sicherheit
P302+P352 BEI BERüHRUNG MIT DER HAUT: Mit viel Wasser/... (Hersteller kann, falls zweckm??ig, ein Reinigungsmittel angeben oder, wenn Wasser eindeutig ungeeignet ist, ein alternatives Mittel empfehlen) waschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.

3,4-Dimethoxyphenol Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-S?tze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.

Chemische Eigenschaften

Red Crystal Powder

Verwenden

3,4-Dimethoxyphenol is used in the preparation of 5,6-dimethoxy benzofuranone derivatives and multi-target anti Alzheimer compounds. It is also used in the preparation of 3,4-dimethoxyphenyl-beta-D-glucopyranoside and 4-(but-2-enyloxy)-1,2-dimethoxybenzene. Further, it serves as a precursor for 4H-chromenes synthesis.

Synthese

3,4-Dimethoxyphenol is synthesised using Veratraldehyde as a raw material by chemical reaction. The specific synthesis steps are as follows:
Method (i): To a solution of vertraldehyde (2.11)(5 g,0.03 mole)in glacial acetic acid (30 ml)is added dropwise to a solution of peracetic acid5(15 ml) during 30 min.The temperature of the reaction mixture rises,it is kept at 40-45 by cooling.The reaction mixture is left for 10 hr and then concentrated to about 15 ml in vacuo.The residue is extracted with ether (2 x 20 ml).The ether layer is distilled.The formate ester of 3,4- dimethoxyphenol thus obtained is hydrolysed by refluxing with potassium hydroxide (10 g)in aqueous alcohol (1:4,100 ml)for 1 hr.The reaction mixture is concentrated in vacuo almost to dryness.It is dissolved in water (20 ml),the solution rendered acidic with dilute sulphuric acid and extracted with ether.The ether extract is dried (sodium sulphate)and distilled.The oily residue thus obtained is subjected to column chromatography over silica gel(2 x 30 cm).Elution with benzene gave 3,4-dimethoxyphenol as yellow solid.Yield 3g(65.2%).It is crystallised from  benzene as yellow crystalline needles.M.p.78-80(lit.m.p.78-80).
3,4-Dimethoxyphenol synthesis 1
Method (ii): A mixture of veratraldehyde (2.11)(1.66 g,0.01 mole),hydrogen peroxide (30%,2.6 ml,0.023 mole),p-toluenesulphonic acid (6.88 g, 0.036 mole)and methanol (5 ml)is stirred at room temperature.When the reaction is complete (as monitored by TLC)the reaction mixture is diluted with water (50 ml)and extracted with dichloromethane (5 x 50 ml).The extract is dried (anhydrous sodium sulphate)and purified by column chromatography over silica gel(2 x 30 cm).Elution with benzene gave 3,4. dimethoxyphenol as an yellow solid.Yield 1.16 g (75.3%).M.p.78-80.
3,4-Dimethoxyphenol synthesis 2

3,4-Dimethoxyphenol Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


3,4-Dimethoxyphenol Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 298)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Hubei Lidu New Material Technology Co., Ltd
+86-19307248857 +86-19307248857
19307248857@163.com China 885 58
Hebei Chuanghai Biotechnology Co., Ltd
+8615350571055
Sibel@chuanghaibio.com China 8738 58
Springchem New Material Technology Co.,Limited
+86-021-62885108 +8613917661608
info@spring-chem.com China 2068 57
Capot Chemical Co.,Ltd.
+86-(0)57185586718 +86-13336195806
sales@capot.com China 29640 60
ATK CHEMICAL COMPANY LIMITED
+undefined-21-51877795
ivan@atkchemical.com China 33024 60
career henan chemical co
+86-0371-86658258 +8613203830695
sales@coreychem.com China 29815 58
Wuhan Chemwish Technology Co., Ltd
027-67849912
sales@chemwish.com CHINA 10821 58
CONIER CHEM AND PHARMA LIMITED
+8618523575427
sales@conier.com China 49979 58
Fuxin Pharmaceutical
+86-021-021-50872116 +8613122107989
contact@fuxinpharm.com China 10000 58
SIMAGCHEM CORP
+86-5922680277 +86-13806087780
sale@simagchem.com China 17346 58

2033-89-8(3,4-Dimethoxyphenol)Verwandte Suche:


  • 4-HYDROXYVERATROLE
  • 3,4-Dimethoxyphenol,97%
  • 3,4-Bis(Methyloxy)phenol
  • 3,4-Dimethoxyphel
  • 3,4-diMethoxyphenoxyl
  • 3,4-dimethoxy-pheno
  • 3,4-DIMETHOXYPHENOL
  • NSC 140927
  • 5‐Hydroxycatechol dimethyl ether
  • 3,4-Dimethoxyphenol >
  • 3,4-Dimethoxyphenol,>98%
  • 3,4-Dimethoxyphenol, ≥ 97.0%
  • 3,4-Dimethoxyphenol, 10 mM in DMSO
  • Phenol, 3,4-dimethoxy-
  • 2033-89-8
  • Building Blocks
  • Phenols
  • Oxygen Compounds
  • Organic Building Blocks
  • Other Products
  • Building Blocks
  • C6 to C8
  • Chemical Synthesis
  • Organic Building Blocks
  • Oxygen Compounds
  • Aromatic Phenols
  • Phenol&Thiophenol&Mercaptan
  • Aromatics Compounds
  • Aromatics
  • Phenyls & Phenyl-Het
  • Organic Building Blocks
  • Oxygen Compounds
  • Phenols
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