3-Bromofuran Struktur

3-Bromfuran

Bezeichnung:3-Bromfuran

CAS-Nr22037-28-1

Englisch Name:3-Bromofuran

CBNumberCB0329248

SummenformelC4H3BrO

Molgewicht146.97

MOL-Datei22037-28-1.mol

Synonyma

3-Bromfuran

3-Bromfuran physikalisch-chemischer Eigenschaften

Schmelzpunkt	131.5-132 °C
Siedepunkt	103 °C (lit.)
Dichte	1.635 g/mL at 25 °C (lit.)
Brechungsindex	n20/D 1.496(lit.)
Flammpunkt	38 °F
storage temp.	-20°C
Löslichkeit	Chloroform, Ethyl Acetate
Aggregatzustand	Liquid
Farbe	Clear yellow to orange to brown
Wasserlöslichkeit	Soluble in chloroform, ethyl acetate. Insoluble in water.
BRN	105337
InChI	InChI=1S/C4H3BrO/c5-4-1-2-6-3-4/h1-3H
InChIKey	LXWLEQZDXOQZGW-UHFFFAOYSA-N
SMILES	O1C=CC(Br)=C1
CAS Datenbank	22037-28-1(CAS DataBase Reference)
NIST chemische Informationen	Furan, 3-bromo-(22037-28-1)

Sicherheit

Kennzeichnung gefährlicher	F,Xi
R-Sätze:	11-36/37/38
S-Sätze:	16-23-24/25-37/39-26-33-29-7/9
RIDADR	UN 1993 3/PG 2
WGK Germany	3
F	10
Hazard Note	Highly Flammable/Irritant
HazardClass	3
PackingGroup	II
HS Code	29321900

Gefahreninformationscode (GHS)

3-Bromofuran Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S24/25:Berührung mit den Augen und der Haut vermeiden.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
S29:Nicht in die Kanalisation gelangen lassen.
S7/9:Behälter dicht geschlossen an einem gut gelüfteten Ort aufbewahren.
Chemische Eigenschaften
3-Bromofuran is a colorless to light yellow liquid having a boiling point similar to that of water (102.5-102.6 °C), but with density significantly higher (1.6606 g/cm3 at 20 °C).It is colorless when it is pure; however, the color can be light yellow when minor impurities are present. It is usaually stablized by calcium carbonate. It was used in the preparation of 2-substituted 3-furfurals. It was also used in the synthesis of 5,6-dehydronorcantharidins. 3-bromofuran is one of the volatile metabolites discussed in studies for detecting and discriminating diseases of onion.
Verwenden
3-Bromofuran is heterocyclic building block used in organic synthesis. 3-Bromofuran is one of the volatile metabolites discussed in studies for detecting and discriminating diseases of onion.
Synthese
3-Bromofuran was obtained in minor amounts in 1887 as a byproduct in a reaction of 3-bromofuroic acid with calcium hydroxide. About four decades later this compound was prepared deliberately and in higher yield. 3-bromofuran has been prepared from 3,4-dibromofuran via ortho-metalation with butyl lithium in good yield. An elegant synthesis of 3-bromofuran is due to Fechtel who prepared this compound via a Diels Alder-bromination-reverse Diels Alder sequence.
läuterung methode
Purify 3-bromofuran by two steam distillations and dry it over fresh CaO. It can be dried over Na metal (no obvious reaction) and fractionated. It is not very soluble in H2O but is soluble in organic solvents. When freshly distilled, it is a clear oil, but darkens on standing and eventually resinifies. It can be stored for long periods by covering the oil with an alkaline solution of hydroquinone and is redistilled when required. It forms a characteristic maleic anhydride adduct, m 131.5-132o. [Shepard et al. J Am Chem Soc 52 2083 1930, Huhes & Johnson J Am Chem Soc 53 737 1931, adduct: van Campen & Johnson J Am Chem Soc 55 430 1933, Beilstein 17/1 V 295.]

3-Bromofuran Upstream-Materialien And Downstream Produkte

3-Bromfuran Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

22037-28-1, 3-Bromofuran Verwandte Suche:

Send Inquriy