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Showing 1 to 2 of 2 for “"Hammett Study"”.
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The synthesis and use of cyclic nitronic esters
… acid complexation was examined by conducting a Hammett study which showed that electron-rich nitrostyrenes cyclize the fastest. It was shown that nitroalkenes can behave as the diene component of the cycloaddition with cyclic dienes due to the effect of the Lewis acid. Finally, the selectivity …
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Investigation of aryldimethylsilanolates in palladium-catalyzed cross-coupling reactions and development of chiral bis-hydrazone ligands for asymmetric aryl-aryl couplings
… catalytic cycle under stoichiometric conditions. Hammett analysis reveals that electron-donating groups on the silicon nucleophile and electron-withdrawing groups on the aryl halide electrophile accelerate this process. Further interpretation of the kinetic data leads to the proposal of an …