Kinetics of Oxidation of Diphenylmethane and Derivatives with Ce(IV) in Aqueous Acidic Acetonitrile

Hong‐Ping ‐P Lin, Jeng Rong Leu, Jing‐Jer ‐J Jwo

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

In aqueous acidic acetonitrilc solution cerium(IV) oxidizes diphenylmethane (Ph2CH2) to produce diphenylmethanol (Ph2CHOH) first and then benzophenone (Ph2CO). With the organic reductant in great excess, both the Ce(IV)‐Ph2CH2 and Ce(IV)‐Ph2CHOH rcactions follow second‐order kinetics. The rates of both reactions increase nonlinearly with increasing [H+] or with decreasing [H2O]. Both kinetic and spectrophotometrc results indicate that replacement of water molecules by complex formation through the phenyl or hydroxyl group plays an important role in activating the reaction. Under similar conditions, the order of relative reactivities toward Ce(IV) oxidation is PhCH2OH > CH3CH2OH > Ph2CHOH > Ph2CH2 > PhCH3> (Ph2CO, C6H6). Mechanistic interpretations of the kinetic results are presented.

原文English
頁(從 - 到)519-526
頁數8
期刊Journal of the Chinese Chemical Society
41
發行號5
DOIs
出版狀態Published - 1994 10月

All Science Journal Classification (ASJC) codes

  • 一般化學

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