20599-27-3

Basic information

• Product Name: 1-BROMO-2-PENTENE
• Synonyms: 2-Pentene, 1-bromo-
• CAS NO: 20599-27-3
• Molecular Formula: C₅H₉Br
• Molecular Weight: 149.0315
• Mol File: 20599-27-3.mol

Chemical Properties

• Melting Point: -106.7°C (estimate)
• Boiling Point: 122.05°C
• Flash Point: 22.8°C
• Appearance: /
• Density: 1.2545
• Vapor Pressure: 16mmHg at 25°C
• Refractive Index: 1.4731
• CAS DataBase Reference: 1-BROMO-2-PENTENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1-BROMO-2-PENTENE(20599-27-3)
• EPA Substance Registry System: 1-BROMO-2-PENTENE(20599-27-3)

Safety Data

• RIDADR: 1993
• HazardClass: 3.1
• PackingGroup: II
• Hazardous Substances Data: 20599-27-3(Hazardous Substances Data)

Usage

Appearance

Colorless to pale yellow liquid 1-Bromo-2-pentene is a liquid with a color that ranges from colorless to pale yellow.

Odor

Strong, sweet The compound has a noticeable and sweet smell.

Use as an intermediate in organic synthesis

Production of pharmaceuticals, flavors, and fragrances 1-Bromo-2-pentene is used as a chemical intermediate in the synthesis of various organic compounds, particularly in the production of pharmaceuticals, flavors, and fragrances.

Use as a reagent

Preparation of alkylthioethers The compound is also used as a reagent in chemical reactions, such as the preparation of alkylthioethers.

Flammability

Fire hazard with exposure to heat, flames, or oxidizing agents 1-Bromo-2-pentene is flammable, and it poses a fire hazard when it comes into contact with heat, flames, or oxidizing agents.

Health hazards

Skin and eye irritation The compound has potential health hazards, including causing skin and eye irritation.

Safety precautions

Handle with care and in a well-ventilated area Due to its potential health hazards and flammability, it is important to handle 1-bromo-2-pentene with care and ensure proper ventilation when working with it.

InChI:InChI=1/C5H9Br/c1-2-3-4-5-6/h3-4H,2,5H2,1H3/b4-3+

Upstream product

• 31844-95-8 2-bromopent-1-ene 
• 616-25-1 1-Penten-3-ol 
• 1576-96-1 (E)-2-penten-1-ol 
• 765-42-4 1-cyclopropylethanol 
• 110-86-1 pyridine 
• 7789-60-8 phosphorus tribromide 
• 5398-25-4 2,3-dibromo-pentane 
• 6335-72-4 2-ethyl-2,3-dibromo-butyric acid 
• 7732-18-5 water 
• 7664-93-9 sulfuric acid 
• 10035-10-6 hydrogen bromide 
• 15790-87-1 methyl 2-pentenoate 
• 16400-32-1 1-bromo-pent-2-yne 
• 20273-24-9 pent-2-en-1-ol 

Downstream Products

• 592-78-9 hept-3-ene 
• 4038-04-4 3-ethyl-1-pentene 
• 19947-22-9 3-phenyl-1-pentene 
• 53172-84-2 (E/Z)-2-phenylpent-2-ene 
• 91969-50-5 pent-2-enyl-phenyl ether 
• 70672-84-3 (2-Ethyl-1-methoxy-but-3-enyl)-benzene 
• 10560-04-0 (+/-)-1-(1-Ethyl-prop-2-enyl)-cyclohexanol 
• 133782-57-7 1-(5'-O-(MMTr)-2'-O-(2-pentenyl)-3'-deoxy-3'-phenylseleno-β-D-arabinofuranosyl)uracil 
• 133782-61-3 1-(5'-O-(MMTr)-3'-O-(2-pentenyl)-2'-deoxy-2'-phenylseleno-β-D-xylofuranosyl)uracil 
• 133782-84-0 5'-O-(MMTr)-2'-deoxy-2'-phenylseleno-3'-O-(2-pentenyl)uridine 
• 72015-36-2 3,7-decadiene 
• 51255-67-5 3,4-diethyl-hexa-1,5-diene 
• 103394-06-5 3-ethyl-1,5-octadiene 
• 591-95-7 penta-1,2-diene 

Relevant articles and documents

Z-Selective alkyne semi-hydrogenation catalysed by piano-stool N-heterocyclic carbene iron complexes

NHC iron(ii) piano-stool complexes catalyse the selective semi-hydrogenation of alkynes to alkenes using silanes as reducing agents. Aromatic terminal alkynes are converted to styrenes without over-reduction to ethylbenzene derivatives. Furthermore, internal aryl alkynes afford cis-alkenes with excellent Z-selectivity.

Indium(III) halide-catalyzed UV-irradiated radical coupling of iodomethylphosphorus compounds with various organostannanes

The first catalytic radical coupling of iodomethylphosphorus compounds was accomplished with allyl-, alkenyl-, and allenylstannanes under UV irradiation in the presence of an indium(III) halide catalyst, for which a transmetalated allylic indium species was confirmed to be an active radical species.

STADIES ON THE WITTIG REACTION (VIII). STEREOSELECTIVITY OF DIPHENYL ALLYLIC PHOSPHONIUM YLIDS IN WITTIG REACTION

Ylids generated from diphenyl allylic phosphonium salts reacted with aliphatic aldehydes containing a terminal oxygen functionized group in the absence of lithium salt to give E,E-conjugated dienes.The stereoselectivity depends mainly on the base used, the allylic part of phosphonium salts also shows some effect on stereochemistry.Eight conjugated dienic insect sex pheromones and related analogues with different E-selectivities were obtained.

AN IMPROVED, PREPARATIVE ROUTE TO 1-CYCLOPROPYL-1-HALOETHANES

We wish to report a method for the synthesis of 1-cyclopropyl-1-chloroethane and 1-cyclopropyl-1-bromoethane, on a preparative scale, uncontaminated by 5-chloro(or bromo)-2-pentene.