Inorganic perchlorates and pericyclic reactions. IV. 1 Rate enhancement by specific cation-substrate interaction or by increased internal pressure?
作者:Giuseppe Faita、PierPaolo Righetti
DOI:10.1016/0040-4020(95)00507-5
日期:1995.8
The kinetic behaviour of Diels-Alder and ene reactions was investigated in several inorganic perchlorate-organic solvent solutions. The observed rate accelerations are the result either of specific solute-cation interactions or of the increasedinternalpressure of the media, depending on substrates, solvents, and metal cations.
The kinetics of the reaction between 1-phenyl-4-benzyliden-5-pyrazolone and ethoxyethenes have been studied by quantitative spectroscopic analysis in xylene at various temperatures.