Russian Chemical Bulletin

, Volume 49, Issue 4, pp 654–658 | Cite as

The influence of substituents on the kinetics of the reaction of carbonyl oxides with benzaldehyde

  • A. M. Nazarov
  • G. A. Yamilova
  • V. D. Komissarov
Physical Chemistry
  • 22 Downloads

Abstract

The reactivity of carbonyl oxides toward benzaldehyde was characterized by thek 33/k 33 ratio, wherek 33 andk 31 are the rate constants of the reactions of RCOO with PhCHO and diphenyldiazomethane Ph2CN2, respectively. Thek 33/k 31 ratios obtained at 60°C in acetonitrile range from 0.61·10−2 (m-BrPh2CN2) to 20·10−2 (Ph2MeCHO). The reactions are probably preceded by the formation of a charge-transfer complex (CTC) with charge transfer from aldehyde to RCOO. The carbonyl oxide reacts with aldehydes by both the nucleophilic pathway (at the C atom of the—CHO group to form 1,2,4-trioxolane) and electrophilic pathway (by the attack at the aromatic ring with the intermediate formation of CTC). In the latter case, either 1,2,4-trioxolane or oxidation products of the phenyl ring are formed.

Key words

carbonyl oxides benzaldehyde diazomethanes reactivity chemiluminescence kinetics quenching constant reaction mechanism 

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Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • A. M. Nazarov
    • 1
  • G. A. Yamilova
    • 1
  • V. D. Komissarov
    • 1
  1. 1.Institute of Organic ChemistryUfa Research Center of the Russian Academy of SciencesUfaRussian Federation

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