140210-45-3

Basic information

• Product Name: (1Z,2E)-3,3,5,5-tetramethylcyclopentane-1,2-dione bis(O-methyloxime)
• CAS NO: 140210-45-3
• Molecular Formula: C₁₁H₂₀N₂O₂
• Molecular Weight: 212.2887
• Mol File: 140210-45-3.mol

Chemical Properties

• Boiling Point: 242.9°C at 760 mmHg
• Flash Point: 84.5°C
• Density: 1.01g/cm³
• Vapor Pressure: 0.0514mmHg at 25°C
• Refractive Index: 1.481
• CAS DataBase Reference: (1Z,2E)-3,3,5,5-tetramethylcyclopentane-1,2-dione bis(O-methyloxime)(CAS DataBase Reference)
• NIST Chemistry Reference: (1Z,2E)-3,3,5,5-tetramethylcyclopentane-1,2-dione bis(O-methyloxime)(140210-45-3)
• EPA Substance Registry System: (1Z,2E)-3,3,5,5-tetramethylcyclopentane-1,2-dione bis(O-methyloxime)(140210-45-3)

Safety Data

• Hazardous Substances Data: 140210-45-3(Hazardous Substances Data)

Upstream product

• 140210-44-2 3,3,5,5-Tetramethyl-cyclopentane-1,2-dione bis-(O-methyl-oxime) 
• 20633-06-1 3,3,5,5-tetramethylcyclopentane-1,2-dione 

Downstream Products

• 51937-69-0 2,2,4,4-tetramethylpentanedinitrile 
• 69462-09-5 2,2,4,4-tetramethyl-3,4-dihydro-2H-pyrrole-5-carbonitrile 
• 96519-42-5 (E)-5-(methoxyimino)-2,2,4,4-tetramethylcyclopentanone 
• 96519-43-6 (Z)-5-(methoxyimino)-2,2,4,4-tetramethylcyclopentanone 
• 140210-44-2 3,3,5,5-Tetramethyl-cyclopentane-1,2-dione bis-(O-methyl-oxime) 
• 140401-51-0 3,3,5,5-Tetramethyl-cyclopentane-1,2-dione bis-(O-methyl-oxime) 

Relevant articles and documents

UV spectroscopy and structures of α-bis(methoxyimino)alkanes

The UV spectra of the geometric isomers of the α-bis(methoxyimino)alkanes 1-8 and the structurally related conjugated (methoxyimino)isoxazolines 11 and 13 all exhibit a ??* absorption band, of which the maxima with cyclohexane as solvent are be

Photochemistry of α-bis(methoxyimino)alkanes

The photochemistry of the α-bis(methoxyimino)alkanes 1-5 and the, structurally related, conjugated dihydro(methoxyimino)isoxazoles 6 and 7 was studied.Triplet-photosensitized irradiation of 1-7 leads only to stepwise E-Z isomerization.Photostationary-state (pss) ratios for 1, 6 and 7 are reported for the various applied triplet sensitizers.Direct irradiation with 254 nm leads to both E-Z isomerization (which is the dominant reaction) and formation of products resulting from initial N-O homolysis of the excited singlet ??* state.Mechanisms for the formation ofthe various products are proposed and the relative importance of the various steps is indicated and discussed.For the α-bis(methoxyimino)alkanes 1 and 3, only the (E,Z)-isomer undergoes N-O homolysis.With the (methoxyimino)isoxazolines 6 and 7, only the exocyclic N-O bond exhibits homolysis and not the strained endocyclic bond.