164297-87-4Relevant academic research and scientific papers
Laser flash, laser-drop, and preparative photochemistry of 1,5-diiodo-1,5-diphenylpentane. Detection of a hypervalent iodine radical intermediate
Banks,García, Hermenegildo,Miranda, Miguel A.,Pérez-Prieto, Julia,Scaiano
, p. 5049 - 5054 (1995)
Studies of the laser flash and laser-drop photolysis of 1,5-diiodo-1,5-diphenylpentane (4) support the intermediacy of a cyclic hypervalent iodine radical, 19. Radical 19 has spectroscopic and chemical properties quite different from those of typical benz
Lamp versus laser photolysis of a bichromophoric dichloroalkane: Chemical evidence for the two-photon generation of the 1,5-diphenylpentanediyl biradical
Pe?rez-Prieto, Julia,Miranda, Miguel Angel,Garci?a, Hermenegildo,Ko?nya, Kla?ra,Scaiano
, p. 3773 - 3777 (2007/10/03)
Low intensity (lamp) photolysis of 1,5-dichloro-1,5-diphenylpentane (1) leads to the formation of the 1-chloro-1,5-diphenylpentyl radical (7) through C-Cl bond cleavage. Radical 7 leads to the final products through typical free radical reactions. No cyclopentanes are formed under low intensity conditions. In contrast, high intensity laser irradiation leads to C-Cl photocleavage of radical 7 to yield the 1,5-diphenylpentanediyl biradical (11), which results in the formation of isomeric cis- and trans-1,2-diphenylcyclopentanes; the behavior of these biradicals agrees well with that observed when their precursor is 2,6-diphenylcyclohexanone. Two-color two-laser experiments suggest that both singlet and triplet biradicals are formed, even if only the latter are detectable with nanosecond techniques.
