2-Brom-2-methylpropionylbromid

Bezeichnung:2-Brom-2-methylpropionylbromid

CAS-Nr20769-85-1

Englisch Name:2-Bromoisobutyryl Bromide

CBNumberCB8440211

SummenformelC4H6Br2O

Molgewicht229.9

MOL-Datei20769-85-1.mol

Synonyma

2-Brom-2-methylpropionylbromid

2-Brom-2-methylpropionylbromid physikalisch-chemischer Eigenschaften

Siedepunkt	162-164 °C(lit.)
Dichte	1.86 g/mL at 20 °C
Brechungsindex	n20/D 1.507(lit.)
Flammpunkt	>110°C
storage temp.	Store below +30°C.
Löslichkeit	Miscible with acetone and carbon disulfide.
Aggregatzustand	Liquid
Wichte	1.860 (20/4℃)
Farbe	Clear light yellow to yellow
Wasserlöslichkeit	reacts
Sensitive	Moisture Sensitive
BRN	1746128
Stabilität	Stable, but may react with moisture. Incompatible with water, strong oxidizing agents, strong bases.
InChI	1S/C4H6Br2O/c1-4(2,6)3(5)7/h1-2H3
InChIKey	YOCIJWAHRAJQFT-UHFFFAOYSA-N
SMILES	CC(C)(Br)C(Br)=O
CAS Datenbank	20769-85-1(CAS DataBase Reference)
NIST chemische Informationen	Propanoyl bromide, 2-bromo-2-methyl-(20769-85-1)
EPA chemische Informationen	Propanoyl bromide, 2-bromo-2-methyl- (20769-85-1)

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	22-34
S-Sätze:	26-36/37/39-45
RIDADR	UN 3265 8/PG 2
WGK Germany	3
TSCA	TSCA listed
HazardClass	8
PackingGroup	II
HS Code	29159080
Speicherklasse	8A - Combustible corrosive hazardous materials
Hazard Classifications	Eye Dam. 1 Skin Corr. 1B

Gefahreninformationscode (GHS)

2-Bromoisobutyryl Bromide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Chemische Eigenschaften
colourless liquid
Verwenden
α-Bromoisobutyryl bromide has been used:
- as atom transfer radical polymerization (ATRP) initiator for functionalization of hydroxyl groups present on the surface of graphene oxide
- to form an N-protected halodienamide which provided four- and five-membered lactams in the presence of copper (I) and a tertiary amine
- in preparation of polycaprolactone macroinitiator via reaction with oligomeric caprolactone diol and mesoporous silica nanoparticles with ATRP initiator anchored on the exterior surface
Verwenden
2-Bromoisobutyryl bromide is used to prepare N-protected halodienamide, which provides four- and five-membered lactams in the presence of copper(I) and a tertiary amine. Further, it is used as atom transfer radical polymerization(ATRP) initiator for functionalization of hydroxyl groups present on the surface of graphene oxide. It is also used in preparation of polycaprolactone macroinitiators through reaction with oligomeric caprolactone diol and mesoporous silica nanoparticles with ATRP initiator anchored on the exterior surface.
Synthese
Bromine was added dropwise to a mixture of isobutyric acid and red phosphorus, and the reaction was carried out at 100°C for 6 hours. Unreacted bromine and hydrogen bromide were distilled off under reduced pressure. After cooling, phosphorous acid was separated to obtain crude 2-Bromoisobutyryl Bromide. The crude product was then fractionated under reduced pressure, and the fraction collected at 91-98°C (13.3 kPa) was the final product.

2-Bromoisobutyryl Bromide Upstream-Materialien And Downstream Produkte

2-Brom-2-methylpropionylbromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

20769-85-1, 2-Bromoisobutyryl Bromide Verwandte Suche:

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