5682-80-4

Basic information

• Product Name: 3-bromo-4-methylpent-3-en-2-one
• Synonyms: 3-Bromo-4-methyl-3-penten-2-one; 3-Bromo-4-methylpent-3-en-2-one; 3-penten-2-one, 3-bromo-4-methyl-
• CAS NO: 5682-80-4
• Molecular Formula: C₆H₉BrO
• Molecular Weight: 177.0391
• Mol File: 5682-80-4.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 214°C at 760 mmHg
• Flash Point: 75.7°C
• Density: 1.35g/cm³
• Vapor Pressure: 0.159mmHg at 25°C
• Refractive Index: 1.481
• CAS DataBase Reference: 3-bromo-4-methylpent-3-en-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-bromo-4-methylpent-3-en-2-one(5682-80-4)
• EPA Substance Registry System: 3-bromo-4-methylpent-3-en-2-one(5682-80-4)

Safety Data

• Hazardous Substances Data: 5682-80-4(Hazardous Substances Data)

Upstream product

• 101458-38-2 2-methyl-1,2-dibromopropyl methyl ketone 
• 141-79-7 4-methyl-pent-3-en-2-one 
• 83769-12-4 (2-Bromo-1,1-dimethyl-3-oxo-butyl)-dimethyl-sulfonium; bromide 
• 67-56-1 methanol 
• 5239-69-0 2,2-dibromo-3,3-dimethyl-1-methylenecyclopropane 
• 58898-22-9 1,1-dibromo-2,2,3-trimethyl-3-trimethylsilanyloxy-cyclopropane 
• 7664-93-9 sulfuric acid 

Downstream Products

• 1578-14-9 2-bromo-3-methyl-crotonic acid 
• 7493-58-5 4-methyl-2,3-pentanedione 
• 66613-07-8 4-methyl-3-phenylthio-3-penten-2-one 
• 882-33-7 diphenyldisulfane 
• 41436-49-1 4-Acetyl-4-brom-5,5-dimethylcyclohexen 

Relevant articles and documents

Novel diastereoselective allene formation by an ene reaction of significantly twisted 1,3-dienes with singlet oxygen

The highly diastereoselective allene formation by photosensitized oxygenation of the significantly twisted novel 1,3-dienes which possess an sp3 chiral center due to a secondary hydroxy group and a tertiary alkoxy group at allylic positions is described.

A convenient halogenation of α,β-unsaturated carbonyl compounds with OXONE and hydrohalic acid (HBr,HCl)

Mixtures of OXONE and hydrobromic acid or hydrochloric acid afford solutions of bromine or chlorine, respectively, α-Bromo- or α-chloro-α,β-unsaturated carbonyl compounds were prepared by addition of hydrobromic acid or hydrochloric acid to the mixture of

REACTION OF METHYLENE-gem-DIBROMOCYCLOPROPANES WITH METHANOL IN THE PRESENCE OF SILVER TRIFLUOROACETATE

The methanolysis of methylene-gem-dibromocyclopropanes in the presence of silver trifluoroacetate leads to the products from opening of the three-membered ring.Their ratio is determined by the charge distribution in the intermediate allenyl cation and by the relative stability of the reaction products.