2200-53-5

Basic information

• Product Name: 1,2-Pentadiene-4-one
• Synonyms: 1,2-Pentadiene-4-one;3,4-Pentadien-2-one;Acetylallene;1,2-Pentadien-4-one;Allenyl methyl ketone;Penta-3,4-dien-2-one
• CAS NO: 2200-53-5
• Molecular Formula: C₅H₆O
• Molecular Weight: 82.1
• Mol File: 2200-53-5.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 126℃
• Flash Point: 26℃
• Appearance: /
• Density: 0.805
• CAS DataBase Reference: 1,2-Pentadiene-4-one(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Pentadiene-4-one(2200-53-5)
• EPA Substance Registry System: 1,2-Pentadiene-4-one(2200-53-5)

Safety Data

• Hazardous Substances Data: 2200-53-5(Hazardous Substances Data)

Usage

Physical state

Colorless liquid
Clear and transparent appearance

Odor

Pungent
Strong and irritating smell

Classification

Ketone
A carbonyl group (C=O) is bonded to an alkyl group (hydrocarbon chain)

Uses

Synthetic intermediate
Commonly used in the production of pharmaceuticals, fragrances, and other organic compounds

Key building block

Polymers and resins
Important component in the synthesis of various types of polymers and resins

Reactivity

High
Due to the presence of a carbonyl group and a vinyl group, it is highly reactive

Handling precautions

Risks to human health and environment
Proper management and handling are necessary to minimize potential hazards

Proper storage and disposal

Essential
To prevent accidents and environmental contamination, 1,2-Pentadiene-4-one should be stored and disposed of according to safety guidelines and regulations

Upstream product

• 4071-85-6 trimetylsilylketene 
• 1439-36-7 1-triphenylphosphoranylidene-2-propanone 
• 1474-32-4 3-(triphenylphosphoranylidene)pentane-2,4-dione 
• 13361-64-3 trimethyl(propargyl)silane 
• 75-36-5 acetyl chloride 
• 13257-81-3 4-trimethylsiloxy-3-penten-2-one 
• 64-17-5 ethanol 
• 74142-33-9 1-(1-Propinyl)vinyl-triflat 

Downstream Products

• 78426-96-7 2,2-Dimethoxy-5-methyl-3-methylene-2-phenyl-2,3-dihydro-2λ⁵-[1,2]oxaphosphole 
• 59435-86-8 endo-2-Acetyl-3-methylenebicyclo<2.2.1>hept-5-ene 
• 177266-29-4 exo-2-Acetyl-3-methylenebicyclo<2.2.1>hept-5-ene 
• 344258-57-7 1-(3-Methyl-6-methylene-cyclohex-3-enyl)-ethanone 
• 90213-43-7 1-(4-Methyl-6-methylene-cyclohex-3-enyl)-ethanone 
• 534-22-5 2-methylfuran 
• 105400-40-6 4,5-dimethyl-octa-3,5-diene-2,7-dione 
• 98859-40-6 4,5-dimethylene-2,7-octanedione 

Relevant articles and documents

VINYL ESTERS OF PHOSPHORUS ACIDS. XXVII. CHEMICAL PROPERTIES OF O-PHOSPHORYLATED ALDEHYDES AND KETONES

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PHOTOCHEMICAL CYCLOADDITION OF α,β-ACETYLENIC KETONES WITH SIMPLE OLEFINS

Irradiation of 3-pentyn-2-one (1) in the presence of tetramethylethylene, isobutylene, and cis- and trans-2-butene leads to vinyldihydrofurans 3, 5, 6, 8, and 9 (Table 1) in a novel photochemical cycloaddition reaction.A related adduct 13 is formed between tetramethylethylene and 5,5-dimethyl-3-hexyn-2-one (2).A mechanism incorporating an initial biradical that closes to a carbene (eqn 3) is proposed to account for these reactions.

VINYL CATIONS 33: 1-ALKENE-3-YNE-2-YL TRIFLATES, PRECURSORS OF TRIPLE BOND STABILIZED VINYL CATIONS-SYNTHESIS AND FIRST SOLVOLYTIC STUDIES.

The α-alkynyl vinyl triflates (3) are synthesized and the solvolyses reactions studied in different solvents.The solvolysis products and kinetic data indicate, that the hitherto unknown triple bond stabilized vinyl cation 2a 2b is formed as an intermediate.