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4-bromo-1-butyne

4-BROMO-1-BUTYNE 97%

Catalog No.
C005B-038035
Manufacturer No.
675725-5G
Manufacturer Name
Sigma-Aldrich
Quantity
5
Unit of Measure
GR

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4-Bromo-1-butyne is commonly used as a reactant. It serves as a source of alkyl halides for the introduction of bromo functionality into the molecule.

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General description

4-Bromo-1-butyne is commonly used as a reactant. It serves as a source of alkyl halides for the introduction of bromo functionality into the molecule.

Application

4-Bromo-1-butyne is used as a reactant in the synthesis of:

  • Macrocycles by cobalt-mediated [2+2+2] co-cyclotrimerization.
  • 2,4,5-trisubstituted oxazoles by a gold-catalyzed formal [3+2] cycloaddition.
  • Intramolecular 1,3-dipolar cycloaddition to synthesize 1,3,4-oxadiazoles.
  • Lactones bearing alkynes for reductive cyclization in the preparation of azulene derivatives.
  • Substituted α-pyrones by gold-catalyzed coupling reactions.

Molecular Weight: 132.99. Empirical Formula: C4H5Br. Quality Level: 100. Assay: 97%. refractive index: n20/D 1.481. density: 1.417 . g/mL . at 25 . °C. SMILES string: BrCCC#C. InChI: 1S/C4H5Br/c1-2-3-4-5/h1H,3-4H2. InChI key: XLYOGWXIKVUXCL-UHFFFAOYSA-N. Pictograms: GHS02,GHS06. Signal Word: Danger. Hazard Statements: H226 - H301 - H317. Precautionary Statements: P210 - P233 - P240 - P280 - P301 + P310 - P303 + P361 + P353. Hazard Classifications: Acute Tox. 3 Oral - Flam. Liq. 3 - Skin Sens. 1. Storage Class Code: 3 - Flammable liquids. WGK: WGK 3. Flash Point(F): 75.0 °F. Flash Point(C): 23.9 °C. Personal Protective Equipment: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter.
UPC:
42281518
Condition:
New
HazmatClass:
Yes
MPN:
675725-5G
CAS:
38771-21-0

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