102840-90-4Relevant articles and documents
PHOTOCHEMICAL DECOMPOSITION OF SOME 4-(DIALKYLAMINO)AZOBENZENES IN AERATED SOLUTION
Albini, Angelo,Fasani, Elisa,Pietra, Silvio
, p. 257 - 262 (2007/10/02)
Irradiation of benzophenone and 2,2-dimethoxy-2-phenylacetophenone (DMPA) in the presense of some 4-(dialkylamino)azobenzenes (2) causes decomposition of these dyes.The products formed are the N-monoalkyl derivatives (3), the N-acyl derivatives (4), the N-oxides (5), and products arising from cleavage of the Ar-N bond.N-Oxides arise from the reaction of perbenzoic acid, formed in the decomposition of DMPA in aerated solution.The other processes originate from electron transfer to triplet benzophenone or to benzoylperoxy radical (from DMPA), followed by proton transfer and reaction of the α-amino radical with oxygen.The effect of substituents on these reactions is discussed.