2,3-Dihydro-4-methylpyran Singlet oxygen

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-4-d + ¹O₂^* ®
Solvent: CH₃CN

k/k_reference = 1.8

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = Methylene Blue; Meas. k/k_ref = 1.8. Use 2,3-Dihydro-4-methylpyran as actinometer.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-4-t + ¹O₂^* ®
Solvent: CH₃CN

k/k_reference = 1.2

Photosensitizer = Methylene Blue; Meas. k/k_ref = 1.2.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-3-t + ¹O₂^* ®
Solvent: CH₃CN

k/k_reference = 8.7 × 10^-1

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = Methylene Blue; Meas. k/k_ref = 0.87.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-2-t + ¹O₂^* ®
Solvent: CH₃CN

k/k_reference = 1.1

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = Methylene Blue; Meas. k/k_ref = 1.1.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-4-d + ¹O₂^* ®
Solvent: C₆H₆

k/k_reference = 1.1

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = 5,10,15,20-Tetraphenylporphine. Meas. k/k_ref = 1.1. Use 2,3-Dihydro-4-methylpyran as actinometer.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-4-t + ¹O₂^* ®
Solvent: C₆H₆

k/k_reference = 1.3

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = 5,10,15,20-Tetraphenylporphine. Meas. k/k_ref = 1.3.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-3-t + ¹O₂^* ®
Solvent: C₆H₆

k/k_reference = 9.1 × 10^-1

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = 5,10,15,20-Tetraphenylporphine. Meas. k/k_ref = 0.91.

Frimer, A.A.; Bartlett, P.D.; Boschung, A.F.; Jewett, J.G.
J. Am. Chem. Soc. 99, 7977-7986 (1977)

Reaction: 2,3-Dihydro-4-methylpyran + ¹O₂^* ® products
Reference Reaction: 4-Methyl-2,3-dihydropyran-2-t + ¹O₂^* ®
Solvent: C₆H₆

k/k_reference = 9.8 × 10^-1

Experimental method: Photolysis
Analytical method: VPC
Data type: Relative value measured by steady state method

Photosensitizer = 5,10,15,20-Tetraphenylporphine. Meas. k/k_ref = 0.98.