3229-28-5

Basic information

• Product Name: 4,5-dichlorocyclopent-4-ene-1,3-dione
• Synonyms: 4,5-Dichlorocyclopent-4-ene-1,3-dione; 4-Cyclopentene-1,3-dione, 4,5-dichloro-
• CAS NO: 3229-28-5
• Molecular Formula: C₅H₂Cl₂O₂
• Molecular Weight: 164.9742
• Mol File: 3229-28-5.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 219.2°C at 760 mmHg
• Flash Point: 87.7°C
• Density: 1.59g/cm³
• Vapor Pressure: 0.121mmHg at 25°C
• Refractive Index: 1.542
• CAS DataBase Reference: 4,5-dichlorocyclopent-4-ene-1,3-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 4,5-dichlorocyclopent-4-ene-1,3-dione(3229-28-5)
• EPA Substance Registry System: 4,5-dichlorocyclopent-4-ene-1,3-dione(3229-28-5)

Safety Data

• Hazardous Substances Data: 3229-28-5(Hazardous Substances Data)

Upstream product

• 3424-05-3 1,2,3,3,5,5-Hexachloro-4-dichloromethylene-cyclopentene 
• 14541-88-9 1,2,3,3,5,5-hexachloro-cyclopentene 
• 70403-42-8 4,5-Dichloro-2-((E)-2,3-dichloro-1,1,3-trimethoxy-allyl)-cyclopent-4-ene-1,3-dione 
• 56922-66-8 4,5-dichloro-2-diphenoxymethylene-4-cylopentene-1,3-dione 
• 41498-12-8 4,5-dibromo-4-cyclopentene-1,3-dione 
• 18964-31-3 2,3-dichloro-5-dichloromethylene-2-cyclopentene-1,4-dione 
• 67-68-5 dimethyl sulfoxide 
• 50565-69-0 hexachloro-cyclopentane-1,3-dione 
• 7647-01-0 hydrogenchloride 
• 67-56-1 methanol 
• 7664-93-9 sulfuric acid 
• 60592-72-5 2,4,4,5,5-Pentachloro-3-amino-2-cyclopenten-1-one 
• 89167-08-8 3-amino-2,2,3,4,4,5,5-heptachloro-cyclopentanone 
• 221534-98-1 2-acetyl-4,5-dichlorocyclopent-4-ene-1,3-dione 

Downstream Products

• 69205-24-9 4,5-Dichloro-2-phenylaminomethylene-cyclopent-4-ene-1,3-dione 
• 69205-56-7 4,5-Dichloro-2-[(3,5-dichloro-phenylamino)-methylene]-cyclopent-4-ene-1,3-dione 
• 69205-43-2 2-[(4-Bromo-phenylamino)-methylene]-4,5-dichloro-cyclopent-4-ene-1,3-dione 
• 41497-70-5 1.2-Dichlor-4-<4-methyl-benzyliden>-cyclopenten-(1)-dion-(3.5) 
• 41497-71-6 1.2-Dichlor-4-<4-chlor-benzyliden>-cyclopenten-(1)-dion-(3.5) 
• 104338-59-2 1.2-Dichlor-4-<3-nitro-benzyliden>-cyclopenten-(1)-dion-(3.5) 
• 41497-75-0 1.2-Dichlor-4-<4-nitro-benzyliden>-cyclopenten-(1)-dion-(3.5) 
• 34428-30-3 1.2-Dichlor-4-benzyliden-cyclopenten-⁽¹⁾-dion-(3.5) 
• 34620-46-7 1,2-Dichlor-4-(4-methoxy-benzyliden)-cyclopenten-1-dion-(3,5) 
• 41497-82-9 1,2-Dichlor-4-(4-hydroxy-3-methoxy-benzyliden)-cyclopentan-⁽¹⁾-dion-(3,5) 
• 73373-67-8 2-Chlor-1-anilino-cyclopenten-⁽¹⁾-dion-(3.5) 
• 41497-83-0 1,2-Dichlor-4-cinnamyliden-cyclopenten-⁽¹⁾-dion-(3,5) 
• 34620-47-8 1.2-Dichlor-4-<4-dimethylamino-benzyliden>-cyclopenten-(1)-dion-(3.5) 
• 41497-79-4 1.2-Dichlor-4-<3-brom-benzyliden>-cyclopenten-(1)-dion-(3.5) 

Relevant articles and documents

NOVEL BISPHOSPHANE CATALYSTS

In the present Application protection is sought for compounds of the general formula (I) as ligands for reactions catalysed by transition metals. The preparation thereof and use thereof, in particular for the preparation of β-amino acids, is also discusse

NEW REACTIONS OF 4,5-DICHLORO-2-DICHLOROMETHYLENE-4-CYCLOPENTENE-1,3-DIONE

The reaction of 4,5-dichloro-2-dichloromethylene-4-cyclopentene-1,3-dione with DMFA gives a high yield of 2,3-dichloro-5-(dimethyliminiomethyl)-2-cyclopentene-1,4-dione. 2,3-Dichloro-5,5-bismethylthio-2-cyclopentene-1,4-dione was isolated as a result of the analogous reaction with DMSO.A reaction mechanism involving diketocarbene is proposed.