75567-26-9Relevant academic research and scientific papers
Thermolysis and photolysis of 3,3:4,4-dibutano-1,2-dioxetane
Kopecky, Karl R.,Sastre, Juan A. Lopez
, p. 2089 - 2092 (2007/10/02)
Thermolysis of 5 x 10-3 M 3,3:4,4-dibutano-1,2-dioxetane 2, Ea = 25.3 +/- 0.3 kcal/mol, ΔS* = 0 +/- 2 eu, in degassed decane solution at 42 deg C produced a 300:1 ratio of cyclopentanone 3:4-pentenal, 4.From the quantum yield of photolysis of 3 to 4, determined to be 0.27 using 313 nm light, it is calculated that 2.5 percent excited 3 is formed on the thermolysis of 2.Photolysis of (>380 nm) 5 x 10-4 M 2 produces a 54:1 ratio of 3:4 corresponding to a 13.5 percent yield of excited 3.Excited state yields determined by measuring luminescence of benzene solution of 2 containing DPA and DBA were 1 x 10-4 percent singlet and 8.7 percent triplet.The reason for the 300 percent discrepancy between the two methods for determining excited state yields is not known.
