77541-40-3Relevant articles and documents
CORRELATION OF KINETIC DATA OF 1,3-DIPOLAR CYCLOADDITIONS OF C-BENZOYL-N-PHENYLNITRONES WITH THE HOMO ENERGIES OF FURAN DERIVATIVES
Fisera, Lubor,Gaplovsky, Anton,Timpe, Hans-Joachim,Kovac, Jaroslav
, p. 1504 - 1512 (2007/10/02)
Application of PMO treatment to 1,3-dipolar cycloaddition of C-benzoyl-N-phenylnitrone with furan derivatives is described.Ionisation potentials of 2-R-substituted furan derivatives (R=H, CH3, C2H5, CH2OH, CH2OCOCH3, C6H5, CHO) and 2,5-dimethylfurane representing experimental values of the HOMO energies have been determined from energies of the respective charge-transfer complexes with TCNE.Good correlation between IP and k2 rate constants indicates that the reaction is controlled by the LUMO(nitrone)/HOMO(furan deriv.) interaction.Electron affinities of the furanderivatives were determined from IP and energies of ?-?*transitions using empirical equation ΔE(?-?*)=IP-EA-450.58 kJ mol-1.