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252271

Sigma-Aldrich

α-Bromoisobutyryl bromide

98%

Sinonimo/i:

2-Bromo-2-methylpropionyl bromide, BIBB

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About This Item

Formula condensata:
(CH3)2CBrCOBr
Numero CAS:
20769-85-1
Peso molecolare:
229.90
Beilstein:
1746128
Numero CE:
244-017-3
Numero MDL:
MFCD00000122
Codice UNSPSC:
12352100
ID PubChem:
24855196
NACRES:
NA.22

Saggio

98%

Forma fisica

liquid

Indice di rifrazione

n20/D 1.507 (lit.)

P. eboll.

162-164 °C (lit.)

Densità

1.86 g/mL at 25 °C (lit.)

Stringa SMILE

CC(C)(Br)C(Br)=O

InChI

1S/C4H6Br2O/c1-4(2,6)3(5)7/h1-2H3
YOCIJWAHRAJQFT-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

BIBB is an important reagent in the synthesis of amides, macrocyclic amides, ketenes, and alkynic ketones.

Applicazioni

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

Pittogrammi

Corrosion
GHS05

Avvertenze

Danger

Indicazioni di pericolo

H314

Classi di pericolo

Eye Dam. 1 - Skin Corr. 1B

Codice della classe di stoccaggio

8A - Combustible corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

>230.0 °F

Punto d’infiammabilità (°C)

> 110 °C

Dispositivi di protezione individuale

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Certificati d'analisi (COA)

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Poultry chicken feather keratin was extracted and then modified for the fabrication of keratin-graft-PNIPAM copolymers. The keratin was well extracted from feather fiber and powdered. Subsequently, it underwent the surficial functionalization process with initiator groups. After the study conducted full
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Reaction of 2-substituted dienamides with catalytic amounts of copper halide/tripyridylamine (TPA) furnishes either 5-exo or 6-endo products with the outcome dependent upon the radical initiating unit. Reaction of 3-substituted dienamides produces beta-lactams via a 4-exo cyclization with termination of the
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