2-Phenylcyclopenta[b][1]benzopyran Singlet oxygen

Timpe, G.I.; Klokova, E.M.; El'tsov, A.V.
J. Org. Chem. USSR 14, 625-630 (1978)

Reaction: 2-Phenylcyclopenta[b][1]benzopyran + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₆

k = 7.8 × 10⁵(L mol^-1 s^-1), b = 5.4 × 10^-2(mol L^-1)

Experimental method: Photolysis
Analytical method: vis-UV absorption
Data type: Derived from steady state measurements

Self-sensitized; used solvent k_d = 4.2 × 10⁴ s^-1.