1-Bromnaphthalin

Bezeichnung:1-Bromnaphthalin

CAS-Nr90-11-9

Englisch Name:1-Bromonaphthalene

CBNumberCB5197277

SummenformelC10H7Br

Molgewicht207.07

MOL-Datei90-11-9.mol

Synonyma

1-Bromnaphthalin

1-Bromnaphthalin physikalisch-chemischer Eigenschaften

Schmelzpunkt	−2-−1 °C(lit.)
Siedepunkt	133-134 °C10 mm Hg(lit.)
Dichte	1.48 g/mL at 20 °C(lit.)
Dampfdruck	0.013 hPa (20 °C)
Brechungsindex	n20/D 1.6570(lit.)
Flammpunkt	>230 °F
storage temp.	Store below +30°C.
Löslichkeit	H2O: slightly soluble
Aggregatzustand	Liquid
Farbe	slightly yellow to deep brownish-yellow
Wasserlöslichkeit	slightly soluble
Merck	14,1425
BRN	1906414
Dielectric constant	5.1（19℃）
InChIKey	DLKQHBOKULLWDQ-UHFFFAOYSA-N
LogP	4.06
CAS Datenbank	90-11-9(CAS DataBase Reference)
NIST chemische Informationen	Naphthalene, 1-bromo-(90-11-9)
EPA chemische Informationen	Naphthalene, 1-bromo- (90-11-9)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	22-36-36/37/38-20/21/22
S-Sätze:	26-36
RIDADR	2810
WGK Germany	3
RTECS-Nr.	QJ1545000
F	8
TSCA	Yes
HazardClass	6.1(b)
PackingGroup	III
HS Code	29036990
Toxizität	LD50 orally in Rabbit: 810 mg/kg

Gefahreninformationscode (GHS)

1-Bromonaphthalene Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36:Reizt die Augen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der 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
Thick colorless yellow to yellow-brown liquid with a pungent odor. Insoluble in water, miscible with alcohol, ether, benzene and chloroform. 1-Bromonaphthalene is one of two isomeric bromonaphthalenes, the other being 2-bromonaphthalene.
Verwenden
1-Bromonaphthalene is used in organic synthesis and refractometry of fats. It is used in the preparation of N-aryl imidazoles and diaryl ethers. It is used to determine the refractive index of crystals and the water content of alcohols. It is utilized in the preparation of glutathione peroxidase-like antioxidant activity of diaryl diselenides. Further, it serves as a solvent for the exfoliation and dispersion of hexabenzocoronene. In addition to this, it is used as a refrigerant and a solvent molecular weight substance.
synthetische
1-Bromonaphthalene is synthesized by the reaction of naphthalene with bromine: C10H8+ Br2→ C10H7Br + HBr.
Reaction: add carbon tetrachloride and naphthalene in the reaction pot, stirring and heating, and slowly add bromine at 45℃. After adding, keep the reaction at 70-80℃ for 3-4h. distillation to recover carbon tetrachloride, wash the reaction product, distill under reduced pressure, wash again, filter, dry and get the finished product.
Application
1-Bromonaphthalene is a bromoarene that can be used in:
Palladium-catalyzed Suzuki–Miyaura coupling reaction with potassium aryltrifluoroborates without the use of phase-transfer catalysts or phosphine ligands.
The preparation of indeno annelated polycyclic aromatic hydrocarbons by reacting with o-bromobenzeneboronic acid and oligocyclic bromoarenes via Suzuki-Heck type coupling.
Ni catalyzed Kumada–Tamao–Corriu cross-coupling reaction with PhMgBr.
The preparation of arylnaphthalenes via palladium-catalyzed Suzuki-Miyaura cross-coupling reaction with aryl boronic acid.
Synthesis Reference(s)
Organic Syntheses, Coll. Vol. 1, p. 121, 1941
Tetrahedron, 64, p. 4999, 2008 DOI: 10.1016/j.tet.2008.03.085
Allgemeine Beschreibung
The vibrational spectra of 1-bromonaphthalene has been studied.
läuterung methode
Purify 1-bromonaphthalene by passage through activated alumina, and three vacuum distillations. [Beilstein 5 H 547, 5 IV 1665.]

1-Bromonaphthalene Upstream-Materialien And Downstream Produkte

1-Bromnaphthalin Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

90-11-9, 1-Bromonaphthalene Verwandte Suche:

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