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345830

Sigma-Aldrich

3-Bromo-2-methylpropene

97%

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Synonym(s):
Methallyl bromide, Methylallyl bromide
Linear Formula:
H2C=C(CH3)CH2Br
CAS Number:
Molecular Weight:
135.00
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

97%

form

liquid

impurities

0.1% hydroquinone

refractive index

n20/D 1.472 (lit.)

bp

94-95 °C (lit.)

density

1.339 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CC(=C)CBr

InChI

1S/C4H7Br/c1-4(2)3-5/h1,3H2,2H3

InChI key

USEGQJLHQSTGHW-UHFFFAOYSA-N

Related Categories

General description

Rotational isomerism in 3-bromo-2-methylpropene has been studied by IR spectroscopy.

Application

3-Bromo-2-methylpropene may be used:
  • in the synthesis of alkenyl imines
  • in the synthesis of 2-methylpropenyl (“methallyl”) complex, Cp*Os(η3-allyl)Br2
  • in a study of chiral phase transfer alkylation leading to (S)-α-alkylcysteines

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B

WGK

WGK 3

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Rotational isomerism in 3-bromo, 2-methylpropene studied by ir spectroscopy.
Diallo AO.
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, 36(9), 799-803 (1980)
Synthesis of Hydride and Alkyl Compounds Containing the Cp* Os (η3-allyl) Fragment. Crystal Structures of Cp* Os (η3-C8H13) Br2 and [Cp* Os (η3-C4H7) Me (H2O)][BF4].
Mui HD, et al.
Organometallics, 18(17), 3264-3272 (1999)
Taek-Soo Kim et al.
The Journal of organic chemistry, 71(21), 8276-8278 (2006-10-10)
We reported efficient enantioselective synthetic methodologies for (R)-alpha-alkylcysteines and (S)-alpha-alkylcysteines. The phase-transfer catalytic alkylation of 2-phenyl-2-thiazoline-4-carboxylic acid tert-butyl ester and 2-o-biphenyl-2-thiazoline-4-carboxylic acid tert-butyl ester, in the presence of chiral catalysts (1 or 2), gave the corresponding alkylated products, which could
Intramolecular "hydroiminiumation" of alkenes: application to the synthesis of conjugate acids of cyclic alkyl amino carbenes (CAACs).
Rodolphe Jazzar et al.
Angewandte Chemie (International ed. in English), 46(16), 2899-2902 (2007-03-14)

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