3229-28-5

Upstream product

• 3424-05-3 1,2,3,3,5,5-Hexachloro-4-dichloromethylene-cyclopentene 
• 18964-31-3 2,3-dichloro-5-dichloromethylene-2-cyclopentene-1,4-dione 
• 41498-13-9 4,5-diiodo-4-cyclopentene-1,3-dione 
• 77-47-4 hexachlorocyclopentadiene 
• 695-77-2 1,2,3,4-tetrachloro-cyclopenta-1,3-diene 
• 221534-98-1 2-acetyl-4,5-dichlorocyclopent-4-ene-1,3-dione 
• 89167-08-8 3-amino-2,2,3,4,4,5,5-heptachloro-cyclopentanone 
• 60592-72-5 2,4,4,5,5-Pentachloro-3-amino-2-cyclopenten-1-one 
• 7664-93-9 sulfuric acid 
• 7647-01-0 hydrogenchloride 
• 67-56-1 methanol 
• 50565-69-0 hexachloro-cyclopentane-1,3-dione 
• 67-68-5 dimethyl sulfoxide 
• 41498-12-8 4,5-dibromo-4-cyclopentene-1,3-dione 

Downstream Products

• 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 
• 41497-71-6 1.2-Dichlor-4-<4-chlor-benzyliden>-cyclopenten-(1)-dion-(3.5) 
• 41497-82-9 1,2-Dichlor-4-(4-hydroxy-3-methoxy-benzyliden)-cyclopentan-⁽¹⁾-dion-(3,5) 
• 84557-32-4 4-Chlor-5-(3-chloranilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-33-5 4-Chlor-5-(3,4-dichloranilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-36-8 4,5-Dianilino-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-38-0 4,5-Bis-(4-methylanilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-34-6 4-Chlor-5-(N-2-cyanoethyl-N-phenyl-amino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-37-9 4,5-Bis-(2-methylanilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-45-9 4,5-Bis-(4-chloranilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-49-3 4,5-Bis-(4-bromanilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-46-0 4,5-Bis-(3-chloranilino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 
• 84557-51-7 4,5-Bis-(N-methyl-N-phenyl-amino)-2-dicyanmethylen-cyclopent-4-en-1,3-dion 

Relevant academic research and scientific papers

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.

REACTION OF 4,5-DICHLORO-2-DICHLOROMETHYLENE-4-CYCLOPENTENE-1,3-DIONE WITH PHENOLS

Depending on the conditions, the reaction of 4,5-dichlor-2-dichloromethylene-4-cyclopentene-1,3-dione with phenols in the presence of diethylamine leads to the substitution of one or two chlorine atoms in the exocyclic dichloromethylene group of the diket