Proton abstraction from bis-(2,4-dinitrophenyl)methane by methoxide ion

Abstract

Rate constfnts for hydrogen or deuterium abstraction from bis-(2,4-dinitrophenyl)methane by methoxide ion have been determined in methanol, methanol–dimethyl sulphoxide, and deuteriated methanol solutions, together with the temperature variation of proton abstraction and carbanion protonation for the hydrogen-containing substrate in methanol. Isotope and solvent effects confirm the rate-limiting proton transfer.