17264-90-3Relevant articles and documents
Kinetics and Mechanism of Ru(III)-catalysed Oxidation of Aromatic Aldehydes by Sodium Metaperiodate in Alkaline Medium: A Change in Mechanism from Hydride Loss in Acid Medium to Proton Loss in Alkaline Medium
Radhakrishnamurti, P. S.,Misra, P. C.
, p. 427 - 430 (2007/10/02)
The title reactions are first order in the substrate and first order in the catalyst, the order with respect to periodate being zero.The dependence on alkali is unity.The reactivity order is p-nitro > m-nitro > m-bromo > m-methoxy > p-bromo > p-chloro- > H ca. p-methyl > p-methoxy.The pH-rate profile attains a minimim at neutral pH and the rate increases on either regions of this pH.The Hammett plot shows a fair linearity with a ρ-value of + 1.66 pointing to a rate-limiting proton loss.A mechanism involving the complexation of the monoanion of the aldehydes with the Ru(III) followed by rate-limiting proton loss is postulated.Activation parameters have been computed.
METAL-CATALYZED SIMULTANEOUS PRODUCTION OF HYDROGEN AND ALKALINE SALTS OF ORGANIC ACIDS
Chiusoli, Gian Paolo,Giroldini, William,Salerno, Giuseppe
, p. 371 - 374 (2007/10/02)
Metal catalysis of the dehydrogenation of primary alcohols to alkaline salts of the corresponding organic acids is described.Conditions (120-170 deg C) are much milder than those required by the uncatalyzed reactions (220-260 deg C).Hydrogen is evolved in the ratio of two molecules per molecule of alcohol.