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252271

Sigma-Aldrich

α-Bromoisobutyryl bromide

98%

Sinónimos:

2-Bromo-2-methylpropionyl bromide, BIBB

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About This Item

Fórmula lineal:
(CH3)2CBrCOBr
Número de CAS:
20769-85-1
Peso molecular:
229.90
Beilstein/REAXYS Number:
1746128
EC Number:
244-017-3
MDL number:
MFCD00000122
UNSPSC Code:
12352100
PubChem Substance ID:
24855196
NACRES:
NA.22

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.)

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

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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

signalword

Danger

hcodes

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

>230.0 °F

flash_point_c

> 110 °C

ppe

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

Certificados de análisis (COA)

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Sigma-Aldrich

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International journal of biological macromolecules, 153, 364-372 (2020-02-29)
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
Preparation and characterization of hyperbranched polymer grafted mesoporous silica nanoparticles via self-condensing atom transfer radical vinyl polymerization.
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Polymer, 51(1), 92-99 (2010)
Sarah Atzet et al.
Biomacromolecules, 9(12), 3370-3377 (2008-12-09)
Biodegradable poly(2-hydroxyethyl methacrylate)(pHEMA) hydrogels for engineered tissue constructs were developed by the use of atom transfer radical polymerization (ATRP), a degradable cross-linker, and a macroinitiator. Hydrogels are appropriate materials for tissue engineering scaffolds because of their tissue-like mechanical compliance and
Andrew J Clark et al.
The Journal of organic chemistry, 72(15), 5923-5926 (2007-07-03)
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
Sun Hwa Lee et al.
Macromolecular rapid communications, 31(3), 281-288 (2010-02-02)
A method for growing polymers directly from the surface of graphene oxide is demonstrated. The technique involves the covalent attachment of an initiator followed by the polymerization of styrene, methyl methacrylate, or butyl acrylate using atom transfer radical polymerization (ATRP).
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