16474-35-4Relevant academic research and scientific papers
Photolysis of β-Azo Perester, a Bifunctional Initiator. The Fragmentation Rate of a β-Peroxy Ester Radical Determined by the Cyclopropylcarbinyl Clock Method
Engel, Paul S.,Wu, Aiyin
, p. 3969 - 3974 (2007/10/02)
Two free radical initiators containing an azo group and a perester moiety on adjacent carbons have been prepared.On long wavelength UV irradiation, these compounds lose nitrogen to afford β-perester radicals.The cyclopropylcarbinyl radical clock technique has been used to determine that the lifetime of these radicals at 25 deg C toward β-scission and decarboxylation is 480 ns.The potential utility of β-azo peresters as bifunctional free radical initiators is briefly discussed.
Azoperoxides. VI. Selective Decomposition of β-Azoacylperoxides
Schulz, Manfred,West, Gerd,Ourk, Sakum,Strunz, Ingo
, p. 295 - 304 (2007/10/02)
The selective decomposition of the O-O-groups in the azoperoxides 1 and 2 is possible by reaction with dimethylaniline at 35 deg C.Rate constants were measured and the decomposition products were analyzed.Intermediates are azoalkyl radicals.The radical yield of the amine induced decomposition of 2 in ethylbenzene is 8.2percent at 35 deg C.UV irradiation of the azoperoxides 1 and 2 at 20 deg C in ethylbenzene results in a quantitative and selective decomposition of the azo groups.Intermediates are C-radicals with intact peroxide groups.The reaction of 1 and 2 with triethylstannane yields reduction products of the O-O-groups and the N=N-groups, respectively.
