Accession Number : AD0610814

Title :   RESEARCH ON MOLECULAR COMPLEXATION AND REACTIONS OF NON-POLAR MOLECULES AT POLARIZING SURFACES. PART II. THE CATALYTIC HYDROGENATION OF ALKENYLNAPHTHALENES.

Descriptive Note : Final rept., part 2, 1 Sep 58-31 Aug 62,

Corporate Author : OREGON UNIV EUGENE

Personal Author(s) : Mann,Roger Huntington ; klemm,LeRoy H.

Report Date : 10 JAN 1963

Pagination or Media Count : 89

Abstract : The rates of catalytic hydrogenation of 14 alkenylnaphthalenes and related compounds in acetic and propionic acid were determined. Activation energies were determined but no significant differences were found from compound to compound. The values of the rate constant for the reduction of the alkonic double bond were found to depend on chemical structure. The rate of hydrogenation decreased with the amount of substitution of the alkenic double bond. For trisubstituted alkenes, satisfactory conformation was found with the theory that the rate of hydrogenation should decrease as the steric hindrance to attainment of coplanarity increases. For disubstituted and monosubstituted alkenes the alpha-substituted naphthalenes reacted more rapidly than the beta-substituted naphthalenes in agreement with the higher free valence on the alpha-carbon than on the beta-carbon of naphthalene itself. (Author)

Descriptors :   (*AROMATIC COMPOUNDS, HYDROGENATION), (*HYDROGENATION, CATALYSIS), (*CATALYSIS, STEREOCHEMISTRY), (*STEREOCHEMISTRY, CATALYSIS), REACTION KINETICS, PROPIONIC ACID, ACETATES, HEAT OF ACTIVATION, MOLECULAR STRUCTURE, CHEMICAL BONDS, SUBSTITUTION REACTIONS, MOLECULAR ISOMERISM, SURFACES, COMPLEX COMPOUNDS, ELECTRIC MOMENTS

Distribution Statement : APPROVED FOR PUBLIC RELEASE