Kinetics of intramolecular additions of the aminyl radicals to carbonyl groups and subsequent ring opening

Article abstract of DOI:10.1016/0040-4020(95)00459-L

The rates of cyclizations of the aminyl radicals were measured (2a: k₁ = 5.1 × 10⁵ s^-1, 2b: k₁ = 3.1 × 10⁴ s^-1). The angle strains slow down the ring closures. The cyclized oxy radicals 3a