ChemInform Abstract: First Ritter-Type Reaction of Alkylbenzenes Using N-Hydroxyphthalimide as a Key Catalyst.
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Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.Keywords:
Alkylbenzenes
Ritter reaction
Alkylbenzenes
Kovats retention index
Capacity factor
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Alkylbenzenes
Kovats retention index
Homologous series
Methylene
Squalane
Vicinal
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Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases (1974)
The addition of 1-naphthol accelerates the photo-oxidation of alkylbenzenes when their alkyl group contains a reactive hydrogen atom.From the effects of u.v. light on dilute solutions of 1-naphthol in cumene, s-butylbenzene and t-butylbenzene, which have been floated as layers on water, it is possible to propose a mechanism by which the alkylbenzenes are oxidised under the influence of u.v. light.
Alkylbenzenes
Hydrogen atom
Carbon atom
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The first Ritter-type reaction of alkylbenzenes with nitriles has been successfully achieved by the use of N-hydroxyphthalimide (NHPI) as a key catalyst. Thus, treatment of ethylbenzene with ammonium hexanitratocerate(IV) (CAN) in the presence of a catalytic amount of NHPI in EtCN under argon produced the corresponding amide in good selectivity.
Ritter reaction
Alkylbenzenes
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A new α-bromination method of alkylbenzenes with KBrO_3/NaHSO_3 under irradiation light was developed. The method possesed such advantages as mild reaction condition, simple operation, high utilization efficiency of bromine and emitting no erosive gas of HBr. This method was applied to brominate alkylbenzenes, especially the alkylbenzenes with the second class of group, with high yield and purity at lower temperature(usually during 50℃~55℃).
Alkylbenzenes
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Alkylbenzenes
Homologous series
Kovats retention index
Fast atom bombardment
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Abstract This paper describes the technology of synthesizing alkylbenzenes containing C 16–19 alkyl chains. The heavy alkylbenzenes were prepared by C 16–19 liquid paraffin dehydrogenation, followed by alkylation with benzene. A novel catalyst containing Pt and Sn as its main components for the dehydrogenation of C 16–19 paraffins to alkenes was prepared by vacuum impregnation and the catalyst exhibited high stability and selectivity. The alkylation of the C 16–19 alkenes and benzene had a conversion yield of 86.15% and a selectivity of 81.21%. The main alkylbenzenes was identified as monoalkylbenzene by IR and chromatography analysis. C 16–19 alkylbenzene sulfonates are found to give an ultra‐low interfacial tension when mixing with crude oil/reservoir water.
Alkylbenzenes
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Abstract A classification of alkylbenzenes is proposed based on the relative intensities of pairs of ions, of which one is formed from the other by loss of a hydrogen molecule.
Alkylbenzenes
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Alkylbenzenes
Kovats retention index
Capillary gas chromatography
Retention time
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