22311-37-1

Basic information

• Product Name: Phenoxy, 4-hydroxy-2,3,5,6-tetramethyl-
• CAS NO: 22311-37-1
• Molecular Formula: C10H13O2
• Molecular Weight: 165.212
• Mol File: 22311-37-1.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Phenoxy, 4-hydroxy-2,3,5,6-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenoxy, 4-hydroxy-2,3,5,6-tetramethyl-(22311-37-1)
• EPA Substance Registry System: Phenoxy, 4-hydroxy-2,3,5,6-tetramethyl-(22311-37-1)

Safety Data

• Hazardous Substances Data: 22311-37-1(Hazardous Substances Data)

Upstream product

• 527-18-4 Durohydroquinone 
• 527-17-3 Duroquinone 

Downstream Products

• 527-18-4 Durohydroquinone 
• 527-17-3 Duroquinone 
• 120651-12-9 p-nitrobenzenediazonium radical 

Relevant articles and documents

-

-

Photoreduction of p-Benzoquinones: Effects of Alcohols and Amines on the Intermediates and Reactivities in Solution

The photochemistry of 1,4-benzoquinone (BQ) and alkyl-, Cl- and related derivatives, e.g. methyl-, 2,6-dimethyl-, chloro-, 2,5-dichloro-1,4-benzoquinone, duroquinone and chloranil, was studied in nonaqueous solvents by UV-vis spectroscopy using nanosecond laser pulses at 308 nm. The reactivity of the triplet state (3Q*) of the quinones with 2-propanol in the absence of water is largest for BQ and depends mainly on the quinone structure, whereas the rate constant of electron transfer from amines, such as triethylamine (TEA) or 1,4-diazabicyclo[2.2.2]octane, is close to the diffusion-controlled limit for BQ and most derivatives. Photoinduced charge separation after electron transfer from amines to 3Q* and the subsequent charge recombination or neutralization are supported by time-resolved conductivity measurements. The half-life of the decay kinetics of the semiquinone radical (.QH/Q.-) depends significantly on the donor and the medium. The photoconversion into the hydroquinones was measured under various conditions, the quantum yield, λirr = 254 nm, increases with increasing 2-propanol and TEA concentrations. The effects of quenching of 3Q*, the .QH/Q.- radicals and the photoconversion are outlined. The mechanisms of photoreduction of quinones in acetonitrile by 2-propanol are compared with those by TEA in benzene and acetonitrile, and the specific properties of substitution are discussed.

DNP Spectrum Observed in the Photolysis of Benzoquinone and Some of Its Methyl Derivatives. The Triplet Mechanism in CIDNP

CIDNP and dynamic nuclear polarization (DNP) are observed in the photolysis of benzoquinone and its methyl derivatives.In low concentrations of solutions, the signs of the CIDNP of the ring proton of benzoquinone and methyl protons of methyl derivatives o