32620-08-9

Basic information

• Product Name: (E)-1-Bromo-1-butene
• Synonyms: (E)-1-Bromo-1-butene;trans-1-Butenyl bromide
• CAS NO: 32620-08-9
• Molecular Formula: C₄H₇Br
• Molecular Weight: 135.0024
• Mol File: 32620-08-9.mol

Chemical Properties

• Melting Point: -100.3°C
• Boiling Point: 94.75°C
• Flash Point: 14.5°C
• Appearance: /
• Density: 1.3129
• Refractive Index: 1.4530
• CAS DataBase Reference: (E)-1-Bromo-1-butene(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-1-Bromo-1-butene(32620-08-9)
• EPA Substance Registry System: (E)-1-Bromo-1-butene(32620-08-9)

Safety Data

• Hazardous Substances Data: 32620-08-9(Hazardous Substances Data)

Usage

Uses

Used in Organic Synthesis:
(E)-1-Bromo-1-butene is used as an intermediate in organic synthesis for the production of pharmaceuticals, agrochemicals, and other specialty chemicals. Its unique structure allows for versatile reactions and the formation of a wide range of compounds.
Used in Polymer Production:
(E)-1-Bromo-1-butene is also used as a monomer in the production of polymers. Its properties contribute to the formation of polymers with specific characteristics, making it valuable in the development of new materials.
Used in Chemical Industry:
In the chemical industry, (E)-1-Bromo-1-butene is used as a building block for the synthesis of various compounds. Its reactivity and stability make it a useful component in the creation of new chemical entities.
Safety Considerations:
Due to its hazardous nature, (E)-1-Bromo-1-butene is flammable and can cause irritation to the respiratory system and skin upon exposure. Therefore, proper handling and storage procedures should be followed when working with (E)-1-Bromo-1-butene to ensure the safety of individuals and the environment.

Upstream product

• 79912-57-5 acide dibromo-2,3 pentanoique 
• 533-98-2 1,2-dibromobutane 

Downstream Products

• 85375-72-0 1-(4,4-dicyclohexyl-3-butenyl)-3-piperidinecarboxylic acid hydrochloride 
• 85375-71-9 1-(4,4-dicyclohexyl-3-butenyl)-3-piperidinecarboxylic acid ethyl ester hydrochloride 
• 127357-38-4 N-(benzyloxycarbonyl)-α-hydroxy-glycine methyl ester 
• 106872-26-8 methyl 2-benzyloxycarbonylamino-(E)-hex-3-enoate 

Relevant articles and documents

Alkyl Bromide Photobromination: Catalysis by Hydrogen Bromide and the Elimination-Readdition Pathway

In the photobromination of alkyl bromides, hydrogen bromide is shown to act as a catalyst and a kinetic study implies that two molecules of the acid are involved in catalysis.The catalysis is specific in two ways: only HBr is effective and it operates only with alkyl bromides having a β-hydrogen available for substitution.HBr favours the formation of 1,2-dibromides.This catalytic pathway is superimposed on the classical, uncatalysed mechanism.Isotopic labelling experiments show that an elimination-readdition pathway may also account for part of the reaction (maximum 20percent) but cannot explain the migration of bromine which is observed in the formation of β-dibromides.

Une synthese courte et stereoselective de l'Acetoxy-1 hexadecane-13 (Z)yne-11 : Principal constituant de la secretion pheromonale produite par la femelle vierge de la Processionnaire du pin Theumetopoes pityocampa (Danis et Schiff.) (Lepidoptera notodontides).

Resume : Une synthese courte et stereoselective de la pheromone sexuelle de la Processionnaire du pin : Thaumatopoes pityocamps (Denis et Schiff.) a ete realisee.Cette synthese utilise dans son etape finale une reaction de couplage d'un acetate ω-acetylenique sur un halogenure vinylique dans le benzene en presence de quantites catalytiques de tetrakis(triphenylphosphine)palladium et d'iodure cuivreux.