caa a22 4500 378903802 CHVBK 20180305123525.0 cr unu---uuuuu 161128e20040501xx s 000 0 eng 10.1524/zpch.218.5.563.30505 doi (NATIONALLICENCE)gruyter-10.1524/zpch.218.5.563.30505 Kinetics and Mechanism of the Mineral Acid Catalysed Reactions of Hydroxamic Acids [Elektronische Daten] [Kallol K. Ghosh, Jyoti Vaidya, Daliya Sinha] There is currently a great deal of interest in the chemistry of hydroxamic acids. In recent years we have been studying the synthesis, structure and nucleophilicities of hydroxamic acids. This paper reports a kinetic study of reactivity of some hydroxamic acids RC(O)·N(OH)R′; R=C6H5·CH=CH, R′=4-CH3·C6H4 [p-tolylcinnamo hydroxamic acid]; R=C6H5, R′=4-CH3·C6H4 [p-tolylbenzo hydroxamic acid]; R=C6H5, R′=2-CH3·C6H4 [o-tolylbenzo hydroxamic acid] in aqueous mineral acids (HCl, HClO4 and H2SO4). The rate data of hydrolysis reaction revealed that the reactivity/stability sequence of the compounds is generally p-TBHA>o-TBHA>p-TCHA. An excess acidity analysis reveals that the reaction proceeds by nucleophilic attack of water molecule on the protonated substrate. © 2004 Oldenbourg Wissenschaftsverlag GmbH Thermodynamics & statistical physics nationallicence Laboratory techniques, experiments nationallicence Physical chemistry nationallicence Ghosh Kallol K. aut Vaidya Jyoti aut Sinha Daliya aut Zeitschrift für Physikalische Chemie/International journal of research in physical chemistry and chemical physics Oldenbourg Wissenschaftsverlag GmbH 218/5/2004(2004-05-01), 563-574 0942-9352 218:5/2004<563 2004 218 zpch https://doi.org/10.1524/zpch.218.5.563.30505 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/zpch.218.5.563.30505 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ghosh Kallol K. aut NATIONALLICENCE 700 1- Vaidya Jyoti aut NATIONALLICENCE 700 1- Sinha Daliya aut NATIONALLICENCE 773 0- Zeitschrift für Physikalische Chemie/International journal of research in physical chemistry and chemical physics Oldenbourg Wissenschaftsverlag GmbH 218/5/2004(2004-05-01), 563-574 0942-9352 218:5/2004<563 2004 218 zpch CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter