5-Acetyl-3,4-dihydro-6-methylpyran Singlet oxygen

Chan, Y.-Y.; Li, X.; Zhu, C.; Liu, X.; Zhang, Y.; Liang, X.
J. Org. Chem. 55, 5497-5504 (1990)

Reaction: 5-Acetyl-3,4-dihydro-6-methylpyran + ¹O₂^* ® products and/or physical quenching
Solvent: CCl₄

k = 1.2 × 10⁵(L mol^-1 s^-1), T = 283K

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

Photosensitizer = Indicator = Rubrene. used solvent k_d = 1.1 × 10³ s^-1. [Sensitizer] = 5.3 × 10^-5 (mol L^-1).

Chan, Y.-Y.; Li, X.; Zhu, C.; Liu, X.; Zhang, Y.; Liang, X.
J. Org. Chem. 55, 5497-5504 (1990)

Reaction: 5-Acetyl-3,4-dihydro-6-methylpyran + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN

k = 6.8 × 10⁵(L mol^-1 s^-1), T = 283K

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

Photosensitizer = Methylene Blue;Indicator = 1,3-Diphenylisobenzofuran. used solvent k_d = 1.8 × 10⁴ s^-1. [Sensitizer] = 8.7 × 10^-7 (mol L^-1). [Indicator] = 3.8 × 10^-5 (mol L^-1).

Chan, Y.-Y.; Li, X.; Zhu, C.; Liu, X.; Zhang, Y.; Liang, X.
J. Org. Chem. 55, 5497-5504 (1990)

Reaction: 5-Acetyl-3,4-dihydro-6-methylpyran + ¹O₂^* ® products and/or physical quenching
Solvent: CHCl₃

Enthalpy of activation = 0.0(kJ mol^-1), Entropy of activation = 0.0(J K^-1 mol^-1), Temperature range 283 to 323 K
k = 1.5 × 10⁵(L mol^-1 s^-1), T = 298K

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

Photosensitizer = Indicator = Rubrene. used solvent k_d = 7.1 × 10³ s^-1. [Sensitizer] = 5.3 × 10^-5 (mol L^-1).