The photochemical autoxidation of isopropylbenzene

Melville, H. W.; Richards, Stephen B.

doi:10.1039/jr9540000944

Cited by 53 publications

(24 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The activation energy for propagation is in the range expected for a hydrocarbon which is fairly readily oxidized (7,8,9,12,13,14). There is little or no activation energy for bimolecular chain termination (cf.…”

Section: ) T O Check On This Point Two Of These Compounds Were Syntmentioning

confidence: 84%

Absolute Rate Constants for Hydrocarbon Autoxidation: I. Styrene

Howard¹,

Ingold²

1965

Can. J. Chem.

View full text Add to dashboard Cite

show abstract

Section: ) T O Check On This Point Two Of These Compounds Were Syntmentioning

confidence: 84%

Absolute Rate Constants for Hydrocarbon Autoxidation: I. Styrene

Howard¹,

Ingold²

1965

Can. J. Chem.

View full text Add to dashboard Cite

show abstract

“…In Table 4 are summarized the reactivity ratios obtained lin,9-11) and cumene11, [22][23][24][25][26] were calculated from the compilation of the values in literature. Table 5 indicates that the rate constants for the reactions of hydrocarbons with peroxy radicals are dependent on both of them.…”

Section: Resultsmentioning

confidence: 99%

Cooxidation of Hydrocarbons in Liquid Phase. VI. Reactivities of Hydrocarbons and Peroxy Radicals

Niki

Kamiya

Ohta

1969

Bulletin of the Chemical Society of Japan

View full text Add to dashboard Cite

show abstract

“…D-and L-biotin sulfoxide were synthesized according to Melville [11]. The purity of the prepared chemicals was veri¢ed by HPLC [12].…”

Section: Chemicalsmentioning

confidence: 99%

Towards the reaction mechanism of pyrogallol–phloroglucinol transhydroxylase of Pelobacter acidigallici

Reichenbecher

Schink

1999

Biochimica et Biophysica Acta (BBA) - Protein Structure and Mol

View full text Add to dashboard Cite

Conversion of pyrogallol to phloroglucinol was studied with the molybdenum enzyme transhydroxylase of the strictly anaerobic fermenting bacterium Pelobacter acidigallici. Transhydroxylation experiments in H 2 18 O revealed that none of the hydroxyl groups of phloroglucinol was derived from water, confirming the concept that this enzyme transfers a hydroxyl group from the cosubstrate 1,2,3,5-tetrahydroxybenzene (tetrahydroxybenzene) to the acceptor pyrogallol, and simultaneously regenerates the cosubstrate. This concept requires a reaction which synthesizes the cofactor de novo to maintain a sufficiently high intracellular pool during growth. Some sulfoxides and aromatic N-oxides were found to act as hydroxyl donors to convert pyrogallol to tetrahydroxybenzene. Again, water was not the source of the added hydroxyl groups; the oxides reacted as cosubstrates in a transhydroxylation reaction rather than as true oxidants in a net hydroxylation reaction. No oxidizing agent was found that supported a formation of tetrahydroxybenzene via a net hydroxylation of pyrogallol. However, conversion of pyrogallol to phloroglucinol in the absence of tetrahydroxybenzene was achieved if little pyrogallol and a high amount of enzyme preparation was used which had been pre-exposed to air. Obviously, the enzyme was oxidized by air to form sufficient amounts of tetrahydroxybenzene from pyrogallol to start the reaction. A reaction mechanism is proposed which combines an oxidative hydroxylation with a reductive dehydroxylation via the molybdenum cofactor, and allows the transfer of a hydroxyl group between tetrahydroxybenzene and pyrogallol without involvement of water. With this, the transhydroxylase differs basically from all other hydroxylating molybdenum enzymes which all use water as hydroxyl source.

show abstract

The photochemical autoxidation of isopropylbenzene

Cited by 53 publications

References 0 publications

Absolute Rate Constants for Hydrocarbon Autoxidation: I. Styrene

Absolute Rate Constants for Hydrocarbon Autoxidation: I. Styrene

Cooxidation of Hydrocarbons in Liquid Phase. VI. Reactivities of Hydrocarbons and Peroxy Radicals

Towards the reaction mechanism of pyrogallol–phloroglucinol transhydroxylase of Pelobacter acidigallici

Contact Info

Product

Resources

About