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252271

α-Bromoisobutyryl bromide

98%

Synonym(s):

2-Bromo-2-methylpropionyl bromide, BIBB

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About This Item

Linear Formula:
(CH3)2CBrCOBr
CAS Number:
20769-85-1
Molecular Weight:
229.90
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24855196
EC Number:
244-017-3
Beilstein/REAXYS Number:
1746128
MDL number:
MFCD00000122
Assay:
98%
Form:
liquid
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Quality Segment

assay

98%

form

liquid

refractive index

n20/D 1.507 (lit.)

bp

162-164 °C (lit.)

density

1.86 g/mL at 25 °C (lit.)

functional group

acyl bromide, bromo

SMILES string

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

InChI

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

InChI key

YOCIJWAHRAJQFT-UHFFFAOYSA-N

General description

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

Application

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

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Codes

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Flash Point (°F)

>230.0 °F

Flash Point (°C)

> 110 °C

PPE (personal protective equipment)

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

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