The kinetic profile of phthalazinium-2-dicyanomethanide 1,3-dipole with 2π-dipolarophiles: U-shaped dipolarophilic activity and classic type II dipole behaviour. Reaction rates and DFT calculations
Abstract
Kinetic data measured for the reactions of phthalazinium-2-dicyanomethanide 1,3-dipole with 26 dipolarophiles ranging from electron-poor to electron-rich place this dipole firmly in the class II category where reactions may be dipole-HOMO or -LUMO controlled depending on the nature of the dipolarophile. Minimal