166879-49-8

Basic information

• Product Name: 2-(4-chloro-benzylidene)-5-oxo-pyrazolidinium-1-ide
• CAS NO: 166879-49-8
• Molecular Weight: 208.647
• Mol File: 166879-49-8.mol
• Article Data: 15

Chemical Properties

• CAS DataBase Reference: 2-(4-chloro-benzylidene)-5-oxo-pyrazolidinium-1-ide(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(4-chloro-benzylidene)-5-oxo-pyrazolidinium-1-ide(166879-49-8)
• EPA Substance Registry System: 2-(4-chloro-benzylidene)-5-oxo-pyrazolidinium-1-ide(166879-49-8)

Safety Data

• Hazardous Substances Data: 166879-49-8(Hazardous Substances Data)

Upstream product

• 104-88-1 4-chlorobenzaldehyde 
• 292638-85-8 acrylic acid methyl ester 
• 1752-88-1 tetrahydro-3H-pyrazol-3-one hydrochloride 
• 10234-72-7 pyrazolidin-3-one 

Downstream Products

• 1260373-05-4 C₁₄H₁₇ClN₂O₂ 
• 960050-74-2 C₁₆H₁₇ClN₂O₂ 

Relevant articles and documents

Photocatalytic reductive radical-radical coupling of: N, N ′-cyclicazomethine imines with difluorobromo derivatives

A visible-light-induced difluoroalkylation of N,N′-cyclicazomethine imine was successfully realized through a novel photoredox radical-radical cross-coupling reaction. This developed protocol exhibits high functional group tolerance and affords a variety

Chiral Phosphine–Phosphite Ligands in Asymmetric Gold Catalysis: Highly Enantioselective Synthesis of Furo[3,4-d]-Tetrahydropyridazine Derivatives through [3+3]-Cycloaddition

The AuI-catalyzed reaction of 2-(1-alkynyl)-2-alken-1-ones with azomethine imines regio- and diastereoselectively affords furo[3,4-d]tetrahydropyridazines in a tandem cyclization/intermolecular [3+3]-cycloaddition process under mild conditions.

Highly stereoselective [3+2]-cycloaddition reaction of stabilised N,N′-cyclic azomethine imines with 3-nitro-2-phenyl-2H-chromenes: Synthesis of tetrahydrochromeno[4,3-c]pyrazolo[1,2-a]pyrazol-11-ones

The reactions of 3-nitro-2-phenyl-2H-chromenes with 2-arylmethylidene-5-oxopyrazolidin-2-ium-1-ides proceeded diastereoselectively to afford the corresponding tetrahydrochromeno[4,3-c]pyrazolo[1,2-a]pyrazol-11-ones in good yields as a result of the 1,3-dipolar cycloaddition reaction of stabilised N,N′-cyclic azomethine imines at the Δ3-bond of the chromene system.